Daily, Monthly, and Annual Climate Normals for Rockford, IL
This page houses the latest 30-year climate normals (1991-2020) for Rockford.
January:
Rockford Daily Temperature and Precipitation Normals (1991-2020)
*Heating Degree Days (HDD), Cooling Degree Days (CDD)
| Day of Month |
High |
Low |
Average |
HDD* |
CDD* |
Precipitation |
Snowfall |
| 1 |
30.3° |
16.4° |
23.3° |
41.7 |
0 |
0.05" |
0.3" |
| 2 |
30.1° |
16.2° |
23.1° |
41.8 |
0 |
0.06" |
0.3" |
| 3 |
30° |
16° |
23° |
42 |
0 |
0.06" |
0.3" |
| 4 |
29.8° |
15.8° |
22.8° |
42.2 |
0 |
0.05" |
0.3" |
| 5 |
29.7° |
15.6° |
22.7° |
42.3 |
0 |
0.05" |
0.4" |
| 6 |
29.6° |
15.4° |
22.5° |
42.5 |
0 |
0.06" |
0.3" |
| 7 |
29.4° |
15.3° |
22.4° |
42.6 |
0 |
0.05" |
0.3" |
| 8 |
29.3° |
15.1° |
22.2° |
42.8 |
0 |
0.06" |
0.4" |
| 9 |
29.2° |
14.9° |
22.1° |
42.9 |
0 |
0.05" |
0.4" |
| 10 |
29.1° |
14.8° |
22° |
43 |
0 |
0.06" |
0.3" |
| 11 |
29° |
14.6° |
21.8° |
43.2 |
0 |
0.05" |
0.4" |
| 12 |
28.9° |
14.5° |
21.7° |
43.3 |
0 |
0.05" |
0.3" |
| 13 |
28.9° |
14.4° |
21.6° |
43.4 |
0 |
0.05" |
0.4" |
| 14 |
28.8° |
14.3° |
21.5° |
43.5 |
0 |
0.05" |
0.3" |
| 15 |
28.8° |
14.2° |
21.5° |
43.5 |
0 |
0.05" |
0.4" |
| 16 |
28.7° |
14.1° |
21.4° |
43.6 |
0 |
0.06" |
0.3" |
| 17 |
28.7° |
14° |
21.3° |
43.7 |
0 |
0.05" |
0.4" |
| 18 |
28.6° |
13.9° |
21.3° |
43.7 |
0 |
0.05" |
0.4" |
| 19 |
28.6° |
13.8° |
21.2° |
43.8 |
0 |
0.05" |
0.3" |
| 20 |
28.6° |
13.8° |
21.2° |
43.8 |
0 |
0.05" |
0.4" |
| 21 |
28.6° |
13.8° |
21.2° |
43.8 |
0 |
0.05" |
0.4" |
| 22 |
28.6° |
13.7° |
21.2° |
43.8 |
0 |
0.05" |
0.3" |
| 23 |
28.7° |
13.7° |
21.2° |
43.8 |
0 |
0.05" |
0.4" |
| 24 |
28.7° |
13.7° |
21.2° |
43.8 |
0 |
0.05" |
0.4" |
| 25 |
28.8° |
13.8° |
21.3° |
43.7 |
0 |
0.05" |
0.3" |
| 26 |
28.8° |
13.8° |
21.3° |
43.7 |
0 |
0.05" |
0.4" |
| 27 |
28.9° |
13.8° |
21.4° |
43.6 |
0 |
0.05" |
0.3" |
| 28 |
29° |
13.9° |
21.5° |
43.5 |
0 |
0.04" |
0.4" |
| 29 |
29.1° |
14° |
21.6° |
43.4 |
0 |
0.05" |
0.4" |
| 30 |
29.2° |
14.1° |
21.7° |
43.3 |
0 |
0.05" |
0.3" |
| 31 |
29.4° |
14.2° |
21.8° |
43.2 |
0 |
0.05" |
0.4" |
| |
|
|
|
|
|
|
|
| MONTH |
29.1° |
14.5° |
21.8° |
1338.9 |
0 |
1.6" |
10.9" |
|
|
|
February:
Rockford Daily Temperature and Precipitation Normals (1991-2020)
*Heating Degree Days (HDD), Cooling Degree Days (CDD)
| Day of Month |
High |
Low |
Average |
HDD* |
CDD* |
Precipitation |
Snowfall |
| 1 |
29.5° |
14.3° |
21.9° |
43.1 |
0 |
0.05" |
0.4" |
| 2 |
29.7° |
14.5° |
22.1° |
42.9 |
0 |
0.04" |
0.3" |
| 3 |
29.9° |
14.6° |
22.2° |
42.7 |
0 |
0.05" |
0.4" |
| 4 |
30.1° |
14.8° |
22.4° |
42.6 |
0 |
0.05" |
0.3" |
| 5 |
30.3° |
15° |
22.6° |
42.4 |
0 |
0.05" |
0.3" |
| 6 |
30.5° |
15.2° |
22.8° |
42.1 |
0 |
0.05" |
0.4" |
| 7 |
30.7° |
15.4° |
23.1° |
41.9 |
0 |
0.05" |
0.3" |
| 8 |
31° |
15.7° |
23.3° |
41.7 |
0 |
0.05" |
0.3" |
| 9 |
31.3° |
15.9° |
23.6° |
41.4 |
0 |
0.05" |
0.3" |
| 10 |
31.5° |
16.2° |
23.9° |
41.1 |
0 |
0.06" |
0.3" |
| 11 |
31.8° |
16.4° |
24.1° |
40.9 |
0 |
0.06" |
0.4" |
| 12 |
32.1° |
16.7° |
24.4° |
40.6 |
0 |
0.06" |
0.3" |
| 13 |
32.5° |
17° |
24.8° |
40.2 |
0 |
0.05" |
0.3" |
| 14 |
32.8° |
17.3° |
25.1° |
39.9 |
0 |
0.06" |
0.3" |
| 15 |
33.2° |
17.7° |
25.4° |
39.6 |
0 |
0.06" |
0.3" |
| 16 |
33.5° |
18° |
25.8° |
39.2 |
0 |
0.06" |
0.3" |
| 17 |
33.9° |
18.3° |
26.1° |
38.9 |
0 |
0.06" |
0.3" |
| 18 |
34.3° |
18.7° |
26.5° |
38.5 |
0 |
0.06" |
0.3" |
| 19 |
34.7° |
19° |
26.9° |
38.1 |
0 |
0.06" |
0.3" |
| 20 |
35.1° |
19.4° |
27.2° |
37.8 |
0 |
0.06" |
0.3" |
| 21 |
35.5° |
19.7° |
27.6° |
37.4 |
0 |
0.06" |
0.3" |
| 22 |
36° |
20.1° |
28° |
37 |
0 |
0.07" |
0.2" |
| 23 |
36.4° |
20.5° |
28.4° |
36.6 |
0 |
0.07" |
0.3" |
| 24 |
36.8° |
20.8° |
28.8° |
36.2 |
0 |
0.06" |
0.3" |
| 25 |
37.3° |
21.2° |
29.3° |
35.7 |
0 |
0.07" |
0.2" |
| 26 |
37.8° |
21.6° |
29.7° |
35.3 |
0 |
0.07" |
0.3" |
| 27 |
38.2° |
22° |
30.1° |
34.9 |
0 |
0.07" |
0.3" |
| 28 |
38.7° |
22.4° |
30.5° |
34.5 |
0 |
0.07" |
0.2" |
| 29 |
39° |
22.5° |
30.7° |
34.3 |
0 |
|
|
| |
|
|
|
|
|
|
|
| MONTH |
33.4° |
17.8° |
25.6° |
1103.1 |
0 |
1.63" |
8.5" |
|
|
|
March:
Rockford Daily Temperature and Precipitation Normals (1991-2020)
*Heating Degree Days (HDD), Cooling Degree Days (CDD)
| Day of Month |
High |
Low |
Average |
HDD* |
CDD* |
Precipitation |
Snowfall |
| 1 |
39.2° |
22.7° |
31° |
34 |
0 |
0.07" |
0.2" |
| 2 |
39.7° |
23.1° |
31.4° |
33.6 |
0 |
0.07" |
0.3" |
| 3 |
40.2° |
23.5° |
31.8° |
33.2 |
0 |
0.08" |
0.2" |
| 4 |
40.7° |
23.9° |
32.3° |
32.7 |
0 |
0.07" |
0.3" |
| 5 |
41.2° |
24.2° |
32.7° |
32.3 |
0 |
0.07" |
0.2" |
| 6 |
41.6° |
24.6° |
33.1° |
31.9 |
0 |
0.07" |
0.2" |
| 7 |
42.1° |
25° |
33.6° |
31.4 |
0 |
0.07" |
0.2" |
| 8 |
42.6° |
25.4° |
34° |
31 |
0 |
0.07" |
0.3" |
| 9 |
43.1° |
25.7° |
34.4° |
30.6 |
0 |
0.07" |
0.2" |
| 10 |
43.6° |
26.1° |
34.9° |
30.2 |
0 |
0.07" |
0.2" |
| 11 |
44.1° |
26.4° |
35.3° |
29.7 |
0 |
0.07" |
0.2" |
| 12 |
44.6° |
26.8° |
35.7° |
29.3 |
0 |
0.07" |
0.2" |
| 13 |
45.1° |
27.2° |
36.1° |
28.9 |
0 |
0.07" |
0.2" |
| 14 |
45.6° |
27.5° |
36.6° |
28.5 |
0.1 |
0.08" |
0.2" |
| 15 |
46.1° |
27.9° |
37° |
28.1 |
0.1 |
0.07" |
0.1" |
| 16 |
46.6° |
28.2° |
37.4° |
27.7 |
0.1 |
0.08" |
0.2" |
| 17 |
47.1° |
28.5° |
37.8° |
27.3 |
0.1 |
0.08" |
0.2" |
| 18 |
47.6° |
28.9° |
38.2° |
26.9 |
0.1 |
0.08" |
0.1" |
| 19 |
48° |
29.2° |
38.6° |
26.5 |
0.1 |
0.07" |
0.1" |
| 20 |
48.5° |
29.5° |
39° |
26.1 |
0.1 |
0.08" |
0.1" |
| 21 |
49° |
29.9° |
39.4° |
25.7 |
0.1 |
0.08" |
0.2" |
| 22 |
49.5° |
30.2° |
39.8° |
25.3 |
0.1 |
0.08" |
0.1" |
| 23 |
49.9° |
30.5° |
40.2° |
24.9 |
0.1 |
0.08" |
0.1" |
| 24 |
50.4° |
30.9° |
40.6° |
24.5 |
0.1 |
0.07" |
0" |
| 25 |
50.8° |
31.2° |
41° |
24.1 |
0.1 |
0.09" |
0.1" |
| 26 |
51.3° |
31.5° |
41.4° |
23.7 |
0.1 |
0.08" |
0.1" |
| 27 |
51.7° |
31.8° |
41.8° |
23.3 |
0.1 |
0.09" |
0.1" |
| 28 |
52.2° |
32.2° |
42.2° |
22.9 |
0.1 |
0.09" |
0.1" |
| 29 |
52.6° |
32.5° |
42.6° |
22.5 |
0.1 |
0.09" |
0.1" |
| 30 |
53° |
32.8° |
42.9° |
22.1 |
0 |
0.09" |
0" |
| 31 |
53.5° |
33.2° |
43.3° |
21.7 |
0 |
0.1" |
0.1" |
| |
|
|
|
|
|
|
|
| MONTH |
46.5° |
28.1° |
37.3° |
860.6 |
1.6 |
2.4" |
4.9" |
|
|
|
April:
Rockford Daily Temperature and Precipitation Normals (1991-2020)
*Heating Degree Days (HDD), Cooling Degree Days (CDD)
| Day of Month |
High |
Low |
Average |
HDD* |
CDD* |
Precipitation |
Snowfall |
| 1 |
53.9° |
33.5° |
43.7° |
21.4 |
0 |
0.11" |
0.1" |
| 2 |
54.3° |
33.8° |
44.1° |
21 |
0.1 |
0.11" |
0" |
| 3 |
54.7° |
34.1° |
44.4° |
20.6 |
0.1 |
0.11" |
0.1" |
| 4 |
55.2° |
34.5° |
44.8° |
20.2 |
0.1 |
0.11" |
0" |
| 5 |
55.6° |
34.8° |
45.2° |
19.9 |
0.1 |
0.12" |
0.1" |
| 6 |
56° |
35.1° |
45.6° |
19.5 |
0.1 |
0.12" |
0" |
| 7 |
56.4° |
35.5° |
45.9° |
19.1 |
0.1 |
0.11" |
0.1" |
| 8 |
56.8° |
35.8° |
46.3° |
18.8 |
0.1 |
0.12" |
0" |
| 9 |
57.2° |
36.2° |
46.7° |
18.4 |
0.1 |
0.12" |
0" |
| 10 |
57.6° |
36.5° |
47.1° |
18.1 |
0.1 |
0.12" |
0" |
| 11 |
58° |
36.9° |
47.4° |
17.7 |
0.1 |
0.12" |
0.1" |
| 12 |
58.4° |
37.2° |
47.8° |
17.3 |
0.1 |
0.12" |
0" |
| 13 |
58.8° |
37.6° |
48.2° |
17 |
0.1 |
0.12" |
0" |
| 14 |
59.2° |
37.9° |
48.5° |
16.6 |
0.1 |
0.13" |
0.1" |
| 15 |
59.6° |
38.3° |
48.9° |
16.2 |
0.1 |
0.12" |
0" |
| 16 |
59.9° |
38.6° |
49.3° |
15.9 |
0.1 |
0.13" |
0" |
| 17 |
60.3° |
39° |
49.7° |
15.5 |
0.2 |
0.13" |
0" |
| 18 |
60.7° |
39.3° |
50° |
15.1 |
0.2 |
0.14" |
0.1" |
| 19 |
61.1° |
39.7° |
50.4° |
14.8 |
0.2 |
0.13" |
0" |
| 20 |
61.5° |
40.1° |
50.8° |
14.4 |
0.2 |
0.13" |
0" |
| 21 |
61.9° |
40.4° |
51.1° |
14 |
0.2 |
0.14" |
0" |
| 22 |
62.3° |
40.8° |
51.5° |
13.7 |
0.2 |
0.13" |
0.1" |
| 23 |
62.6° |
41.1° |
51.9° |
13.3 |
0.2 |
0.12" |
0" |
| 24 |
63° |
41.5° |
52.3° |
13 |
0.2 |
0.13" |
0" |
| 25 |
63.4° |
41.9° |
52.6° |
12.6 |
0.3 |
0.13" |
0" |
| 26 |
63.8° |
42.2° |
53° |
12.3 |
0.3 |
0.13" |
0" |
| 27 |
64.2° |
42.6° |
53.4° |
11.9 |
0.3 |
0.14" |
0.1" |
| 28 |
64.5° |
43° |
53.8° |
11.6 |
0.3 |
0.14" |
0" |
| 29 |
64.9° |
43.3° |
54.1° |
11.2 |
0.4 |
0.14" |
0" |
| 30 |
65.3° |
43.7° |
54.5° |
10.9 |
0.4 |
0.13" |
0" |
| |
|
|
|
|
|
|
|
| MONTH |
59.7° |
38.5° |
49.1° |
482 |
5.1 |
3.75" |
0.9" |
|
|
|
May:
Rockford Daily Temperature and Precipitation Normals (1991-2020)
*Heating Degree Days (HDD), Cooling Degree Days (CDD)
| Day of Month |
High |
Low |
Average |
HDD* |
CDD* |
Precipitation |
| 1 |
65.7° |
44.1° |
54.9° |
10.5 |
0.4 |
0.13" |
| 2 |
66° |
44.4° |
55.2° |
10.2 |
0.5 |
0.12" |
| 3 |
66.4° |
44.8° |
55.6° |
9.9 |
0.5 |
0.12" |
| 4 |
66.8° |
45.2° |
56° |
9.6 |
0.6 |
0.12" |
| 5 |
67.2° |
45.5° |
56.4° |
9.3 |
0.7 |
0.12" |
| 6 |
67.6° |
45.9° |
56.7° |
9 |
0.7 |
0.12" |
| 7 |
67.9° |
46.3° |
57.1° |
8.7 |
0.8 |
0.12" |
| 8 |
68.3° |
46.6° |
57.5° |
8.4 |
0.9 |
0.12" |
| 9 |
68.7° |
47° |
57.8° |
8.1 |
1 |
0.13" |
| 10 |
69° |
47.3° |
58.2° |
7.8 |
1 |
0.12" |
| 11 |
69.4° |
47.7° |
58.6° |
7.5 |
1.1 |
0.13" |
| 12 |
69.8° |
48.1° |
58.9° |
7.3 |
1.2 |
0.13" |
| 13 |
70.2° |
48.4° |
59.3° |
7 |
1.3 |
0.13" |
| 14 |
70.5° |
48.8° |
59.7° |
6.7 |
1.4 |
0.13" |
| 15 |
70.9° |
49.1° |
60° |
6.5 |
1.5 |
0.12" |
| 16 |
71.3° |
49.5° |
60.4° |
6.2 |
1.6 |
0.13" |
| 17 |
71.6° |
49.9° |
60.7° |
6 |
1.7 |
0.14" |
| 18 |
72° |
50.2° |
61.1° |
5.7 |
1.8 |
0.14" |
| 19 |
72.3° |
50.6° |
61.5° |
5.5 |
2 |
0.14" |
| 20 |
72.7° |
50.9° |
61.8° |
5.3 |
2.1 |
0.14" |
| 21 |
73.1° |
51.3° |
62.2° |
5.1 |
2.2 |
0.15" |
| 22 |
73.4° |
51.7° |
62.5° |
4.8 |
2.4 |
0.14" |
| 23 |
73.8° |
52° |
62.9° |
4.6 |
2.5 |
0.15" |
| 24 |
74.1° |
52.4° |
63.3° |
4.4 |
2.6 |
0.14" |
| 25 |
74.5° |
52.7° |
63.6° |
4.1 |
2.7 |
0.15" |
| 26 |
74.8° |
53.1° |
64° |
3.9 |
2.9 |
0.14" |
| 27 |
75.2° |
53.5° |
64.3° |
3.7 |
3 |
0.15" |
| 28 |
75.5° |
53.8° |
64.7° |
3.4 |
3.1 |
0.15" |
| 29 |
75.8° |
54.2° |
65° |
3.3 |
3.3 |
0.15" |
| 30 |
76.2° |
54.5° |
65.4° |
3.1 |
3.4 |
0.15" |
| 31 |
76.5° |
54.9° |
65.7° |
2.9 |
3.6 |
0.16" |
| |
|
|
|
|
|
|
| MONTH |
71.2° |
49.5° |
60.4° |
198.5 |
54.5 |
4.18" |
|
|
|
June:
Rockford Daily Temperature and Precipitation Normals (1991-2020)
*Heating Degree Days (HDD), Cooling Degree Days (CDD)
| Day of Month |
High |
Low |
Average |
HDD* |
CDD* |
Precipitation |
| 1 |
76.8° |
55.2° |
66° |
2.7 |
3.7 |
0.17" |
| 2 |
77.2° |
55.6° |
66.4° |
2.5 |
3.8 |
0.18" |
| 3 |
77.5° |
55.9° |
66.7° |
2.3 |
4 |
0.17" |
| 4 |
77.8° |
56.3° |
67° |
2 |
4.1 |
0.18" |
| 5 |
78.1° |
56.6° |
67.4° |
1.8 |
4.2 |
0.19" |
| 6 |
78.4° |
56.9° |
67.7° |
1.7 |
4.3 |
0.19" |
| 7 |
78.7° |
57.3° |
68° |
1.5 |
4.5 |
0.18" |
| 8 |
79° |
57.6° |
68.3° |
1.3 |
4.6 |
0.19" |
| 9 |
79.3° |
57.9° |
68.6° |
1.2 |
4.8 |
0.19" |
| 10 |
79.6° |
58.3° |
68.9° |
1.1 |
5 |
0.18" |
| 11 |
79.8° |
58.6° |
69.2° |
1 |
5.2 |
0.18" |
| 12 |
80.1° |
58.9° |
69.5° |
0.9 |
5.4 |
0.19" |
| 13 |
80.4° |
59.2° |
69.8° |
0.8 |
5.6 |
0.19" |
| 14 |
80.6° |
59.5° |
70° |
0.7 |
5.8 |
0.18" |
| 15 |
80.9° |
59.8° |
70.3° |
0.7 |
6 |
0.19" |
| 16 |
81.1° |
60° |
70.6° |
0.6 |
6.2 |
0.18" |
| 17 |
81.3° |
60.3° |
70.8° |
0.5 |
6.4 |
0.18" |
| 18 |
81.6° |
60.6° |
71.1° |
0.5 |
6.5 |
0.18" |
| 19 |
81.8° |
60.8° |
71.3° |
0.4 |
6.7 |
0.18" |
| 20 |
82° |
61.1° |
71.5° |
0.4 |
6.9 |
0.17" |
| 21 |
82.2° |
61.3° |
71.7° |
0.4 |
7.1 |
0.17" |
| 22 |
82.4° |
61.5° |
71.9° |
0.4 |
7.3 |
0.17" |
| 23 |
82.5° |
61.7° |
72.1° |
0.3 |
7.5 |
0.17" |
| 24 |
82.7° |
61.9° |
72.3° |
0.3 |
7.6 |
0.16" |
| 25 |
82.9° |
62.1° |
72.5° |
0.3 |
7.8 |
0.16" |
| 26 |
83° |
62.3° |
72.7° |
0.3 |
7.9 |
0.16" |
| 27 |
83.2° |
62.5° |
72.8° |
0.2 |
8 |
0.15" |
| 28 |
83.3° |
62.6° |
73° |
0.2 |
8.2 |
0.16" |
| 29 |
83.4° |
62.8° |
73.1° |
0.2 |
8.3 |
0.15" |
| 30 |
83.5° |
62.9° |
73.2° |
0.2 |
8.4 |
0.14" |
| |
|
|
|
|
|
|
| MONTH |
80.7° |
59.6° |
70.1° |
27.4 |
181.8 |
5.23" |
|
|
|
July:
Rockford Daily Temperature and Precipitation Normals (1991-2020)
*Heating Degree Days (HDD), Cooling Degree Days (CDD)
| Day of Month |
High |
Low |
Average |
HDD* |
CDD* |
Precipitation |
| 1 |
83.6° |
63° |
73.3° |
0.1 |
8.5 |
0.13" |
| 2 |
83.7° |
63.2° |
73.4° |
0.1 |
8.6 |
0.12" |
| 3 |
83.8° |
63.3° |
73.5° |
0.1 |
8.6 |
0.13" |
| 4 |
83.9° |
63.4° |
73.6° |
0.1 |
8.7 |
0.12" |
| 5 |
83.9° |
63.4° |
73.7° |
0.1 |
8.8 |
0.13" |
| 6 |
84° |
63.5° |
73.8° |
0.1 |
8.8 |
0.13" |
| 7 |
84° |
63.6° |
73.8° |
0.1 |
8.9 |
0.12" |
| 8 |
84.1° |
63.6° |
73.9° |
0.1 |
8.9 |
0.12" |
| 9 |
84.1° |
63.7° |
73.9° |
0.1 |
9 |
0.13" |
| 10 |
84.1° |
63.7° |
73.9° |
0.1 |
9 |
0.13" |
| 11 |
84.1° |
63.8° |
73.9° |
0.1 |
9 |
0.12" |
| 12 |
84.1° |
63.8° |
74° |
0.1 |
9 |
0.13" |
| 13 |
84.1° |
63.8° |
74° |
0.1 |
9.1 |
0.12" |
| 14 |
84.1° |
63.8° |
74° |
0.1 |
9.1 |
0.12" |
| 15 |
84.1° |
63.8° |
74° |
0.1 |
9.1 |
0.11" |
| 16 |
84.1° |
63.8° |
74° |
0.1 |
9.1 |
0.12" |
| 17 |
84.1° |
63.8° |
74° |
0.1 |
9 |
0.12" |
| 18 |
84.1° |
63.8° |
73.9° |
0.1 |
9 |
0.11" |
| 19 |
84° |
63.8° |
73.9° |
0.1 |
9 |
0.12" |
| 20 |
84° |
63.8° |
73.9° |
0.1 |
9 |
0.12" |
| 21 |
84° |
63.7° |
73.8° |
0.1 |
9 |
0.12" |
| 22 |
83.9° |
63.7° |
73.8° |
0.1 |
8.9 |
0.12" |
| 23 |
83.9° |
63.7° |
73.8° |
0.1 |
8.9 |
0.12" |
| 24 |
83.8° |
63.6° |
73.7° |
0.1 |
8.8 |
0.13" |
| 25 |
83.8° |
63.6° |
73.7° |
0.1 |
8.8 |
0.12" |
| 26 |
83.7° |
63.6° |
73.6° |
0.1 |
8.7 |
0.12" |
| 27 |
83.7° |
63.5° |
73.6° |
0.1 |
8.7 |
0.13" |
| 28 |
83.6° |
63.5° |
73.5° |
0.1 |
8.6 |
0.12" |
| 29 |
83.5° |
63.4° |
73.5° |
0.1 |
8.6 |
0.13" |
| 30 |
83.5° |
63.4° |
73.4° |
0.1 |
8.5 |
0.12" |
| 31 |
83.4° |
63.4° |
73.4° |
0.1 |
8.5 |
0.13" |
| |
|
|
|
|
|
|
| MONTH |
83.9° |
63.6° |
73.8° |
3.1 |
274.2 |
3.81" |
|
|
|
August:
Rockford Daily Temperature and Precipitation Normals (1991-2020)
*Heating Degree Days (HDD), Cooling Degree Days (CDD)
| Day of Month |
High |
Low |
Average |
HDD* |
CDD* |
Precipitation |
| 1 |
83.4° |
63.3° |
73.3° |
0.1 |
8.4 |
0.13" |
| 2 |
83.3° |
63.3° |
73.3° |
0.1 |
8.4 |
0.13" |
| 3 |
83.2° |
63.2° |
73.2° |
0.1 |
8.3 |
0.13" |
| 4 |
83.2° |
63.1° |
73.1° |
0.1 |
8.3 |
0.13" |
| 5 |
83.1° |
63.1° |
73.1° |
0.1 |
8.2 |
0.13" |
| 6 |
83° |
63° |
73° |
0.1 |
8.2 |
0.13" |
| 7 |
82.9° |
62.9° |
72.9° |
0.2 |
8.1 |
0.12" |
| 8 |
82.9° |
62.9° |
72.9° |
0.2 |
8 |
0.13" |
| 9 |
82.8° |
62.8° |
72.8° |
0.2 |
8 |
0.13" |
| 10 |
82.7° |
62.7° |
72.7° |
0.2 |
7.9 |
0.13" |
| 11 |
82.6° |
62.6° |
72.6° |
0.2 |
7.8 |
0.13" |
| 12 |
82.5° |
62.5° |
72.5° |
0.2 |
7.7 |
0.14" |
| 13 |
82.5° |
62.5° |
72.5° |
0.2 |
7.6 |
0.14" |
| 14 |
82.4° |
62.3° |
72.4° |
0.2 |
7.5 |
0.14" |
| 15 |
82.3° |
62.2° |
72.3° |
0.2 |
7.4 |
0.15" |
| 16 |
82.2° |
62.1° |
72.1° |
0.2 |
7.3 |
0.14" |
| 17 |
82.1° |
62° |
72° |
0.2 |
7.2 |
0.14" |
| 18 |
82° |
61.9° |
71.9° |
0.2 |
7.1 |
0.14" |
| 19 |
81.9° |
61.7° |
71.8° |
0.2 |
7 |
0.14" |
| 20 |
81.7° |
61.6° |
71.7° |
0.2 |
6.9 |
0.13" |
| 21 |
81.6° |
61.4° |
71.5° |
0.3 |
6.8 |
0.14" |
| 22 |
81.5° |
61.2° |
71.4° |
0.3 |
6.6 |
0.13" |
| 23 |
81.4° |
61° |
71.2° |
0.3 |
6.5 |
0.13" |
| 24 |
81.2° |
60.8° |
71° |
0.3 |
6.4 |
0.13" |
| 25 |
81.1° |
60.6° |
70.9° |
0.4 |
6.2 |
0.14" |
| 26 |
80.9° |
60.4° |
70.7° |
0.4 |
6.1 |
0.13" |
| 27 |
80.7° |
60.2° |
70.5° |
0.5 |
5.9 |
0.14" |
| 28 |
80.6° |
60° |
70.3° |
0.5 |
5.8 |
0.13" |
| 29 |
80.4° |
59.7° |
70° |
0.6 |
5.7 |
0.15" |
| 30 |
80.2° |
59.4° |
69.8° |
0.7 |
5.5 |
0.14" |
| 31 |
80° |
59.2° |
69.6° |
0.8 |
5.3 |
0.15" |
| |
|
|
|
|
|
|
| MONTH |
82° |
61.8° |
71.9° |
8.5 |
222.1 |
4.19" |
|
|
|
September:
Rockford Daily Temperature and Precipitation Normals (1991-2020)
*Heating Degree Days (HDD), Cooling Degree Days (CDD)
| Day of Month |
High |
Low |
Average |
HDD* |
CDD* |
Precipitation |
| 1 |
79.8° |
58.9° |
69.3° |
0.9 |
5.2 |
0.14" |
| 2 |
79.6° |
58.6° |
69.1° |
1 |
5 |
0.14" |
| 3 |
79.3° |
58.3° |
68.8° |
1.1 |
4.9 |
0.13" |
| 4 |
79.1° |
57.9° |
68.5° |
1.2 |
4.7 |
0.13" |
| 5 |
78.8° |
57.6° |
68.2° |
1.3 |
4.5 |
0.13" |
| 6 |
78.6° |
57.3° |
67.9° |
1.4 |
4.4 |
0.13" |
| 7 |
78.3° |
56.9° |
67.6° |
1.6 |
4.2 |
0.13" |
| 8 |
78° |
56.6° |
67.3° |
1.8 |
4 |
0.14" |
| 9 |
77.7° |
56.2° |
67° |
1.9 |
3.9 |
0.13" |
| 10 |
77.4° |
55.8° |
66.6° |
2.1 |
3.7 |
0.12" |
| 11 |
77.1° |
55.4° |
66.3° |
2.2 |
3.5 |
0.12" |
| 12 |
76.8° |
55° |
65.9° |
2.4 |
3.4 |
0.12" |
| 13 |
76.5° |
54.7° |
65.6° |
2.7 |
3.2 |
0.12" |
| 14 |
76.1° |
54.3° |
65.2° |
2.9 |
3.1 |
0.13" |
| 15 |
75.8° |
53.8° |
64.8° |
3.1 |
2.9 |
0.12" |
| 16 |
75.4° |
53.4° |
64.4° |
3.4 |
2.8 |
0.12" |
| 17 |
75.1° |
53° |
64° |
3.6 |
2.7 |
0.12" |
| 18 |
74.7° |
52.6° |
63.6° |
3.9 |
2.5 |
0.13" |
| 19 |
74.3° |
52.2° |
63.2° |
4.1 |
2.4 |
0.12" |
| 20 |
73.9° |
51.8° |
62.8° |
4.4 |
2.2 |
0.12" |
| 21 |
73.5° |
51.3° |
62.4° |
4.6 |
2.1 |
0.13" |
| 22 |
73.1° |
50.9° |
62° |
4.9 |
1.9 |
0.12" |
| 23 |
72.7° |
50.5° |
61.6° |
5.1 |
1.8 |
0.12" |
| 24 |
72.3° |
50.1° |
61.2° |
5.4 |
1.6 |
0.11" |
| 25 |
71.9° |
49.7° |
60.8° |
5.8 |
1.6 |
0.11" |
| 26 |
71.5° |
49.3° |
60.4° |
6.1 |
1.5 |
0.11" |
| 27 |
71° |
48.8° |
59.9° |
6.5 |
1.4 |
0.1" |
| 28 |
70.6° |
48.4° |
59.5° |
6.8 |
1.3 |
0.09" |
| 29 |
70.2° |
48° |
59.1° |
7.1 |
1.2 |
0.09" |
| 30 |
69.7° |
47.6° |
58.7° |
7.4 |
1.1 |
0.1" |
| |
|
|
|
|
|
|
| MONTH |
75.3° |
53.5° |
64.4° |
106.7 |
88.7 |
3.62" |
|
|
|
October:
Rockford Daily Temperature and Precipitation Normals (1991-2020)
*Heating Degree Days (HDD), Cooling Degree Days (CDD)
| Day of Month |
High |
Low |
Average |
HDD* |
CDD* |
Precipitation |
Snowfall |
| 1 |
69.3° |
47.2° |
58.3° |
7.8 |
1 |
0.1" |
0" |
| 2 |
68.8° |
46.8° |
57.8° |
8.1 |
0.9 |
0.09" |
0" |
| 3 |
68.4° |
46.4° |
57.4° |
8.4 |
0.8 |
0.1" |
0" |
| 4 |
67.9° |
46.1° |
57° |
8.8 |
0.8 |
0.09" |
0" |
| 5 |
67.5° |
45.7° |
56.6° |
9.2 |
0.7 |
0.09" |
0" |
| 6 |
67° |
45.3° |
56.2° |
9.5 |
0.7 |
0.08" |
0" |
| 7 |
66.6° |
44.9° |
55.8° |
9.9 |
0.6 |
0.08" |
0" |
| 8 |
66.1° |
44.6° |
55.3° |
10.2 |
0.6 |
0.08" |
0" |
| 9 |
65.7° |
44.2° |
54.9° |
10.6 |
0.5 |
0.09" |
0" |
| 10 |
65.2° |
43.8° |
54.5° |
11 |
0.5 |
0.09" |
0" |
| 11 |
64.7° |
43.5° |
54.1° |
11.3 |
0.4 |
0.08" |
0" |
| 12 |
64.3° |
43.1° |
53.7° |
11.7 |
0.4 |
0.08" |
0" |
| 13 |
63.8° |
42.8° |
53.3° |
12 |
0.3 |
0.08" |
0" |
| 14 |
63.3° |
42.4° |
52.9° |
12.4 |
0.3 |
0.08" |
0" |
| 15 |
62.8° |
42.1° |
52.5° |
12.8 |
0.2 |
0.09" |
0" |
| 16 |
62.4° |
41.8° |
52.1° |
13.1 |
0.2 |
0.08" |
0" |
| 17 |
61.9° |
41.4° |
51.7° |
13.5 |
0.2 |
0.08" |
0" |
| 18 |
61.4° |
41.1° |
51.2° |
13.9 |
0.2 |
0.09" |
0" |
| 19 |
60.9° |
40.7° |
50.8° |
14.3 |
0.2 |
0.08" |
0" |
| 20 |
60.5° |
40.4° |
50.4° |
14.7 |
0.1 |
0.08" |
0" |
| 21 |
60° |
40° |
50° |
15.1 |
0.1 |
0.08" |
0" |
| 22 |
59.5° |
39.7° |
49.6° |
15.5 |
0.1 |
0.09" |
0.1" |
| 23 |
59° |
39.4° |
49.2° |
15.9 |
0.1 |
0.08" |
0" |
| 24 |
58.5° |
39° |
48.8° |
16.3 |
0.1 |
0.08" |
0" |
| 25 |
58° |
38.7° |
48.3° |
16.7 |
0.1 |
0.08" |
0" |
| 26 |
57.5° |
38.3° |
47.9° |
17.1 |
0.1 |
0.09" |
0" |
| 27 |
57° |
38° |
47.5° |
17.6 |
0.1 |
0.09" |
0" |
| 28 |
56.5° |
37.6° |
47.1° |
18 |
0.1 |
0.08" |
0" |
| 29 |
56° |
37.3° |
46.6° |
18.4 |
0 |
0.09" |
0.1" |
| 30 |
55.5° |
36.9° |
46.2° |
18.8 |
0 |
0.08" |
0" |
| 31 |
55° |
36.5° |
45.8° |
19.3 |
0 |
0.08" |
0" |
| |
|
|
|
|
|
|
|
| MONTH |
62.3° |
41.8° |
52° |
411.9 |
10.4 |
2.63" |
0.2" |
|
|
|
November:
Rockford Daily Temperature and Precipitation Normals (1991-2020)
*Heating Degree Days (HDD), Cooling Degree Days (CDD)
| Day of Month |
High |
Low |
Average |
HDD* |
CDD* |
Precipitation |
Snowfall |
| 1 |
54.5° |
36.2° |
45.3° |
19.7 |
0 |
0.08" |
0" |
| 2 |
54° |
35.8° |
44.9° |
20.1 |
0 |
0.08" |
0" |
| 3 |
53.5° |
35.4° |
44.5° |
20.6 |
0 |
0.08" |
0.1" |
| 4 |
53° |
35° |
44° |
21 |
0 |
0.09" |
0" |
| 5 |
52.5° |
34.7° |
43.6° |
21.5 |
0 |
0.08" |
0" |
| 6 |
52° |
34.3° |
43.1° |
21.9 |
0 |
0.08" |
0" |
| 7 |
51.5° |
33.9° |
42.7° |
22.4 |
0 |
0.07" |
0" |
| 8 |
50.9° |
33.5° |
42.2° |
22.8 |
0 |
0.08" |
0.1" |
| 9 |
50.4° |
33.1° |
41.8° |
23.3 |
0 |
0.07" |
0" |
| 10 |
49.9° |
32.7° |
41.3° |
23.7 |
0 |
0.07" |
0" |
| 11 |
49.4° |
32.3° |
40.8° |
24.2 |
0 |
0.08" |
0.1" |
| 12 |
48.9° |
31.9° |
40.4° |
24.6 |
0 |
0.07" |
0" |
| 13 |
48.3° |
31.5° |
39.9° |
25.1 |
0 |
0.08" |
0.1" |
| 14 |
47.8° |
31.1° |
39.5° |
25.6 |
0 |
0.08" |
0" |
| 15 |
47.3° |
30.7° |
39° |
26 |
0 |
0.08" |
0.1" |
| 16 |
46.8° |
30.3° |
38.5° |
26.5 |
0 |
0.07" |
0" |
| 17 |
46.3° |
29.9° |
38.1° |
26.9 |
0 |
0.08" |
0.1" |
| 18 |
45.7° |
29.5° |
37.6° |
27.4 |
0 |
0.07" |
0.1" |
| 19 |
45.2° |
29.1° |
37.2° |
27.8 |
0 |
0.08" |
0.1" |
| 20 |
44.7° |
28.7° |
36.7° |
28.3 |
0 |
0.07" |
0.1" |
| 21 |
44.2° |
28.3° |
36.3° |
28.7 |
0 |
0.07" |
0.1" |
| 22 |
43.7° |
27.9° |
35.8° |
29.2 |
0 |
0.08" |
0.1" |
| 23 |
43.2° |
27.5° |
35.4° |
29.6 |
0 |
0.07" |
0.1" |
| 24 |
42.7° |
27.1° |
34.9° |
30.1 |
0 |
0.07" |
0.1" |
| 25 |
42.3° |
26.7° |
34.5° |
30.5 |
0 |
0.07" |
0.2" |
| 26 |
41.8° |
26.4° |
34.1° |
30.9 |
0 |
0.07" |
0.1" |
| 27 |
41.3° |
26° |
33.6° |
31.4 |
0 |
0.08" |
0.2" |
| 28 |
40.8° |
25.6° |
33.2° |
31.8 |
0 |
0.07" |
0.2" |
| 29 |
40.4° |
25.3° |
32.8° |
32.2 |
0 |
0.07" |
0.1" |
| 30 |
39.9° |
24.9° |
32.4° |
32.6 |
0 |
0.08" |
0.2" |
| |
|
|
|
|
|
|
|
| MONTH |
47.1° |
30.5° |
38.8° |
786.4 |
0 |
2.27" |
2.3" |
|
|
|
December:
Rockford Daily Temperature and Precipitation Normals (1991-2020)
*Heating Degree Days (HDD), Cooling Degree Days (CDD)
| Day of Month |
High |
Low |
Average |
HDD* |
CDD* |
Precipitation |
Snowfall |
| 1 |
39.5° |
24.5° |
32° |
33 |
0 |
0.07" |
0.2" |
| 2 |
39° |
24.2° |
31.6° |
33.4 |
0 |
0.08" |
0.3" |
| 3 |
38.6° |
23.9° |
31.2° |
33.8 |
0 |
0.07" |
0.3" |
| 4 |
38.2° |
23.5° |
30.9° |
34.1 |
0 |
0.07" |
0.2" |
| 5 |
37.8° |
23.2° |
30.5° |
34.5 |
0 |
0.07" |
0.3" |
| 6 |
37.4° |
22.9° |
30.1° |
34.9 |
0 |
0.07" |
0.3" |
| 7 |
37° |
22.6° |
29.8° |
35.2 |
0 |
0.07" |
0.3" |
| 8 |
36.6° |
22.3° |
29.4° |
35.6 |
0 |
0.07" |
0.3" |
| 9 |
36.3° |
22° |
29.1° |
35.9 |
0 |
0.07" |
0.3" |
| 10 |
35.9° |
21.7° |
28.8° |
36.2 |
0 |
0.07" |
0.3" |
| 11 |
35.5° |
21.4° |
28.5° |
36.5 |
0 |
0.07" |
0.3" |
| 12 |
35.2° |
21.1° |
28.1° |
36.9 |
0 |
0.06" |
0.3" |
| 13 |
34.9° |
20.8° |
27.8° |
37.2 |
0 |
0.06" |
0.3" |
| 14 |
34.5° |
20.5° |
27.5° |
37.5 |
0 |
0.06" |
0.3" |
| 15 |
34.2° |
20.3° |
27.2° |
37.7 |
0 |
0.06" |
0.3" |
| 16 |
33.9° |
20° |
27° |
38 |
0 |
0.06" |
0.3" |
| 17 |
33.6° |
19.7° |
26.7° |
38.3 |
0 |
0.06" |
0.4" |
| 18 |
33.3° |
19.5° |
26.4° |
38.6 |
0 |
0.06" |
0.3" |
| 19 |
33.1° |
19.2° |
26.2° |
38.8 |
0 |
0.06" |
0.3" |
| 20 |
32.8° |
19° |
25.9° |
39.1 |
0 |
0.06" |
0.3" |
| 21 |
32.6° |
18.8° |
25.7° |
39.3 |
0 |
0.06" |
0.3" |
| 22 |
32.3° |
18.5° |
25.4° |
39.6 |
0 |
0.05" |
0.3" |
| 23 |
32.1° |
18.3° |
25.2° |
39.8 |
0 |
0.06" |
0.4" |
| 24 |
31.8° |
18.1° |
25° |
40 |
0 |
0.06" |
0.3" |
| 25 |
31.6° |
17.8° |
24.7° |
40.3 |
0 |
0.06" |
0.3" |
| 26 |
31.4° |
17.6° |
24.5° |
40.5 |
0 |
0.05" |
0.3" |
| 27 |
31.2° |
17.4° |
24.3° |
40.7 |
0 |
0.05" |
0.3" |
| 28 |
31° |
17.2° |
24.1° |
40.9 |
0 |
0.06" |
0.3" |
| 29 |
30.8° |
17° |
23.9° |
41.1 |
0 |
0.05" |
0.3" |
| 30 |
30.6° |
16.8° |
23.7° |
41.3 |
0 |
0.06" |
0.4" |
| 31 |
30.4° |
16.6° |
23.5° |
41.5 |
0 |
0.05" |
0.3" |
| |
|
|
|
|
|
|
|
| MONTH |
34.3° |
20.2° |
27.3° |
1170.2 |
0 |
1.93" |
9.4" |
|
|
|
Monthly/Annual:
Rockford Monthly/Annual Temp and Precip Normals (1991-2020)
| Rockford Monthly and Yearly Normals (1991-2020) |
| |
JAN |
FEB |
MAR |
APR |
MAY |
JUN |
JUL |
AUG |
SEP |
OCT |
NOV |
DEC |
ANNUAL |
| HIGH |
29.1 |
33.4 |
46.5 |
59.7 |
71.2 |
80.7 |
83.9 |
82.0 |
75.3 |
62.3 |
47.1 |
34.3 |
58.8 |
| LOW |
14.5 |
17.8 |
28.1 |
38.5 |
49.5 |
59.6 |
63.6 |
61.8 |
53.5 |
41.8 |
30.5 |
20.2 |
40.0 |
| AVERAGE |
21.8 |
25.6 |
37.3 |
49.1 |
60.4 |
70.1 |
73.8 |
71.9 |
64.4 |
52.0 |
38.8 |
27.3 |
49.4 |
| HEATING DEGREE DAYS |
1339 |
1003 |
860 |
482 |
199 |
27 |
3 |
8 |
107 |
412 |
786 |
1170 |
6497 |
| COOLING DEGREE DAYS |
0 |
0 |
2 |
5 |
54 |
182 |
274 |
222 |
89 |
11 |
0 |
0 |
838 |
| PRECIPITATION |
1.60 |
1.63 |
2.40 |
3.75 |
4.18 |
5.23 |
3.81 |
4.19 |
3.62 |
2.63 |
2.27 |
1.93 |
37.24 |
| SNOWFALL |
10.9 |
8.5 |
4.9 |
0.9 |
T |
0.0 |
0.0 |
0.0 |
0.0 |
0.2 |
2.3 |
9.4 |
37.1 |
| Rockford Mean Number of Days (1991-2020) |
| Temperatures |
JAN |
FEB |
MAR |
APR |
MAY |
JUN |
JUL |
AUG |
SEP |
OCT |
NOV |
DEC |
ANNUAL |
| HIGHS >= 90 |
- |
- |
- |
- |
0.7 |
3.9 |
5.4 |
3.2 |
1.5 |
0.1 |
- |
- |
14.8 |
| HIGHS >= 50 |
1.3 |
2.1 |
11.7 |
24.4 |
30.7 |
30.0 |
31.0 |
31.0 |
30.0 |
27.3 |
12.1 |
2.5 |
234.1 |
| HIGHS <= 32 |
18.5 |
12.6 |
3.7 |
0.1 |
- |
- |
- |
- |
- |
- |
2.8 |
12.3 |
50.0 |
| LOWS <= 32 |
29.2 |
25.8 |
21.9 |
7.4 |
0.6 |
- |
- |
- |
0.3 |
5.3 |
18.0 |
27.3 |
135.8 |
| LOWS <= 0 |
5.6 |
3.1 |
0.4 |
- |
- |
- |
- |
- |
- |
- |
- |
2.4 |
11.5 |
|
Follow us on X
Follow us on Facebook
Follow us on YouTube
LOT RSS Feed