Daily, Monthly, and Annual Climate Normals for Chicago, IL
This page houses the latest 30-year climate normals (1991-2020) for Chicago.
January:
Chicago 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 |
32.9° |
20.8° |
26.8° |
38.2 |
0 |
0.07" |
0.3" |
| 2 |
32.7° |
20.6° |
26.7° |
38.3 |
0 |
0.06" |
0.3" |
| 3 |
32.6° |
20.4° |
26.5° |
38.5 |
0 |
0.07" |
0.3" |
| 4 |
32.4° |
20.2° |
26.3° |
38.7 |
0 |
0.07" |
0.3" |
| 5 |
32.3° |
20° |
26.2° |
38.8 |
0 |
0.07" |
0.3" |
| 6 |
32.1° |
19.9° |
26° |
39 |
0 |
0.06" |
0.3" |
| 7 |
32° |
19.7° |
25.8° |
39.2 |
0 |
0.07" |
0.4" |
| 8 |
31.9° |
19.5° |
25.7° |
39.3 |
0 |
0.07" |
0.3" |
| 9 |
31.8° |
19.3° |
25.6° |
39.4 |
0 |
0.07" |
0.4" |
| 10 |
31.7° |
19.2° |
25.4° |
39.6 |
0 |
0.07" |
0.3" |
| 11 |
31.6° |
19° |
25.3° |
39.7 |
0 |
0.07" |
0.3" |
| 12 |
31.5° |
18.9° |
25.2° |
39.8 |
0 |
0.07" |
0.4" |
| 13 |
31.4° |
18.7° |
25.1° |
39.9 |
0 |
0.06" |
0.3" |
| 14 |
31.3° |
18.6° |
25° |
40 |
0 |
0.07" |
0.4" |
| 15 |
31.2° |
18.5° |
24.9° |
40.1 |
0 |
0.06" |
0.4" |
| 16 |
31.2° |
18.4° |
24.8° |
40.2 |
0 |
0.07" |
0.3" |
| 17 |
31.1° |
18.3° |
24.7° |
40.3 |
0 |
0.07" |
0.4" |
| 18 |
31.1° |
18.2° |
24.6° |
40.3 |
0 |
0.06" |
0.4" |
| 19 |
31.1° |
18.1° |
24.6° |
40.4 |
0 |
0.07" |
0.4" |
| 20 |
31.1° |
18° |
24.6° |
40.4 |
0 |
0.06" |
0.4" |
| 21 |
31.1° |
18° |
24.5° |
40.5 |
0 |
0.06" |
0.4" |
| 22 |
31.1° |
18° |
24.5° |
40.5 |
0 |
0.06" |
0.4" |
| 23 |
31.1° |
17.9° |
24.5° |
40.5 |
0 |
0.07" |
0.4" |
| 24 |
31.2° |
17.9° |
24.5° |
40.4 |
0 |
0.06" |
0.4" |
| 25 |
31.2° |
17.9° |
24.6° |
40.4 |
0 |
0.06" |
0.4" |
| 26 |
31.3° |
18° |
24.6° |
40.4 |
0 |
0.06" |
0.4" |
| 27 |
31.4° |
18° |
24.7° |
40.3 |
0 |
0.05" |
0.4" |
| 28 |
31.4° |
18.1° |
24.8° |
40.2 |
0 |
0.06" |
0.4" |
| 29 |
31.6° |
18.1° |
24.8° |
40.1 |
0 |
0.06" |
0.4" |
| 30 |
31.7° |
18.2° |
25° |
40 |
0 |
0.05" |
0.4" |
| 31 |
31.8° |
18.3° |
25.1° |
39.9 |
0 |
0.06" |
0.4" |
| |
|
|
|
|
|
|
|
| MONTH |
31.6° |
18.8° |
25.2° |
1233.3 |
0 |
1.99" |
11.3" |
|
|
|
February:
Chicago 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 |
32° |
18.5° |
25.2° |
39.8 |
0 |
0.06" |
0.4" |
| 2 |
32.1° |
18.6° |
25.4° |
39.6 |
0 |
0.05" |
0.5" |
| 3 |
32.3° |
18.8° |
25.5° |
39.5 |
0 |
0.06" |
0.4" |
| 4 |
32.5° |
18.9° |
25.7° |
39.3 |
0 |
0.05" |
0.4" |
| 5 |
32.7° |
19.1° |
25.9° |
39.1 |
0 |
0.06" |
0.4" |
| 6 |
33° |
19.3° |
26.1° |
38.9 |
0 |
0.06" |
0.4" |
| 7 |
33.2° |
19.5° |
26.4° |
38.6 |
0 |
0.07" |
0.4" |
| 8 |
33.4° |
19.8° |
26.6° |
38.4 |
0 |
0.06" |
0.5" |
| 9 |
33.7° |
20° |
26.9° |
38.1 |
0 |
0.06" |
0.4" |
| 10 |
34° |
20.3° |
27.1° |
37.9 |
0 |
0.07" |
0.4" |
| 11 |
34.3° |
20.5° |
27.4° |
37.6 |
0 |
0.07" |
0.4" |
| 12 |
34.6° |
20.8° |
27.7° |
37.3 |
0 |
0.07" |
0.5" |
| 13 |
34.9° |
21.1° |
28° |
37 |
0 |
0.07" |
0.4" |
| 14 |
35.2° |
21.4° |
28.3° |
36.7 |
0 |
0.07" |
0.4" |
| 15 |
35.6° |
21.7° |
28.6° |
36.4 |
0 |
0.07" |
0.4" |
| 16 |
35.9° |
22° |
28.9° |
36 |
0 |
0.08" |
0.4" |
| 17 |
36.2° |
22.3° |
29.3° |
35.7 |
0 |
0.07" |
0.3" |
| 18 |
36.6° |
22.7° |
29.6° |
35.4 |
0 |
0.07" |
0.4" |
| 19 |
37° |
23° |
30° |
35 |
0 |
0.08" |
0.3" |
| 20 |
37.4° |
23.3° |
30.3° |
34.7 |
0 |
0.07" |
0.4" |
| 21 |
37.7° |
23.7° |
30.7° |
34.3 |
0 |
0.08" |
0.4" |
| 22 |
38.1° |
24° |
31.1° |
33.9 |
0 |
0.07" |
0.3" |
| 23 |
38.5° |
24.3° |
31.4° |
33.6 |
0 |
0.09" |
0.3" |
| 24 |
38.9° |
24.7° |
31.8° |
33.2 |
0 |
0.08" |
0.4" |
| 25 |
39.3° |
25° |
32.2° |
32.8 |
0 |
0.08" |
0.3" |
| 26 |
39.7° |
25.4° |
32.6° |
32.4 |
0 |
0.08" |
0.3" |
| 27 |
40.1° |
25.7° |
32.9° |
32.1 |
0 |
0.09" |
0.3" |
| 28 |
40.5° |
26.1° |
33.3° |
31.7 |
0 |
0.08" |
0.3" |
| 29 |
40.7° |
26.2° |
33.5° |
31.5 |
0 |
|
|
| |
|
|
|
|
|
|
|
| MONTH |
35.7° |
21.8° |
28.8° |
1046.5 |
0 |
1.97" |
10.7" |
|
|
|
March:
Chicago 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 |
40.9° |
26.4° |
33.7° |
31.3 |
0 |
0.08" |
0.3" |
| 2 |
41.4° |
26.8° |
34.1° |
30.9 |
0 |
0.08" |
0.2" |
| 3 |
41.8° |
27.1° |
34.4° |
30.6 |
0 |
0.09" |
0.3" |
| 4 |
42.2° |
27.4° |
34.8° |
30.2 |
0 |
0.08" |
0.3" |
| 5 |
42.6° |
27.8° |
35.2° |
29.8 |
0 |
0.07" |
0.2" |
| 6 |
43° |
28.1° |
35.5° |
29.5 |
0 |
0.08" |
0.3" |
| 7 |
43.4° |
28.4° |
35.9° |
29.1 |
0 |
0.08" |
0.2" |
| 8 |
43.8° |
28.7° |
36.3° |
28.7 |
0 |
0.07" |
0.3" |
| 9 |
44.2° |
29° |
36.6° |
28.4 |
0 |
0.07" |
0.2" |
| 10 |
44.6° |
29.3° |
37° |
28 |
0 |
0.08" |
0.3" |
| 11 |
45.1° |
29.6° |
37.3° |
27.7 |
0 |
0.07" |
0.2" |
| 12 |
45.5° |
29.9° |
37.7° |
27.3 |
0 |
0.08" |
0.2" |
| 13 |
45.9° |
30.2° |
38° |
27 |
0.1 |
0.07" |
0.2" |
| 14 |
46.3° |
30.5° |
38.4° |
26.7 |
0.1 |
0.07" |
0.2" |
| 15 |
46.7° |
30.8° |
38.7° |
26.4 |
0.1 |
0.08" |
0.2" |
| 16 |
47.1° |
31.1° |
39.1° |
26 |
0.1 |
0.07" |
0.1" |
| 17 |
47.5° |
31.4° |
39.4° |
25.7 |
0.1 |
0.08" |
0.2" |
| 18 |
47.8° |
31.7° |
39.8° |
25.3 |
0.1 |
0.08" |
0.2" |
| 19 |
48.2° |
31.9° |
40.1° |
25 |
0.1 |
0.08" |
0.1" |
| 20 |
48.6° |
32.2° |
40.4° |
24.7 |
0.1 |
0.08" |
0.2" |
| 21 |
49° |
32.5° |
40.8° |
24.4 |
0.1 |
0.08" |
0.1" |
| 22 |
49.4° |
32.8° |
41.1° |
24 |
0.1 |
0.08" |
0.1" |
| 23 |
49.8° |
33° |
41.4° |
23.7 |
0.1 |
0.08" |
0.1" |
| 24 |
50.2° |
33.3° |
41.7° |
23.4 |
0.1 |
0.07" |
0.1" |
| 25 |
50.6° |
33.6° |
42.1° |
23 |
0.1 |
0.08" |
0.1" |
| 26 |
50.9° |
33.9° |
42.4° |
22.7 |
0.1 |
0.08" |
0.1" |
| 27 |
51.3° |
34.1° |
42.7° |
22.4 |
0.1 |
0.09" |
0.1" |
| 28 |
51.7° |
34.4° |
43.1° |
22 |
0.1 |
0.08" |
0.1" |
| 29 |
52.1° |
34.7° |
43.4° |
21.7 |
0.1 |
0.09" |
0.1" |
| 30 |
52.5° |
35° |
43.7° |
21.3 |
0.1 |
0.09" |
0.1" |
| 31 |
52.9° |
35.3° |
44.1° |
21 |
0.1 |
0.09" |
0.1" |
| |
|
|
|
|
|
|
|
| MONTH |
47° |
31° |
39° |
807.9 |
1.9 |
2.45" |
5.5" |
|
|
|
April:
Chicago 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 |
53.3° |
35.6° |
44.4° |
20.7 |
0.1 |
0.1" |
0.1" |
| 2 |
53.7° |
35.9° |
44.8° |
20.3 |
0.1 |
0.1" |
0.1" |
| 3 |
54° |
36.2° |
45.1° |
20 |
0.1 |
0.11" |
0.1" |
| 4 |
54.4° |
36.5° |
45.5° |
19.6 |
0.1 |
0.11" |
0.1" |
| 5 |
54.8° |
36.8° |
45.8° |
19.3 |
0.1 |
0.11" |
0" |
| 6 |
55.2° |
37.1° |
46.2° |
18.9 |
0.1 |
0.11" |
0.1" |
| 7 |
55.6° |
37.4° |
46.5° |
18.6 |
0.1 |
0.11" |
0" |
| 8 |
56° |
37.7° |
46.9° |
18.3 |
0.1 |
0.12" |
0.1" |
| 9 |
56.4° |
38° |
47.2° |
17.9 |
0.2 |
0.11" |
0" |
| 10 |
56.8° |
38.4° |
47.6° |
17.6 |
0.2 |
0.12" |
0.1" |
| 11 |
57.2° |
38.7° |
47.9° |
17.3 |
0.2 |
0.11" |
0" |
| 12 |
57.6° |
39° |
48.3° |
16.9 |
0.2 |
0.12" |
0.1" |
| 13 |
58° |
39.4° |
48.7° |
16.5 |
0.2 |
0.12" |
0" |
| 14 |
58.4° |
39.7° |
49.1° |
16.2 |
0.2 |
0.11" |
0.1" |
| 15 |
58.8° |
40° |
49.4° |
15.8 |
0.2 |
0.12" |
0" |
| 16 |
59.2° |
40.4° |
49.8° |
15.4 |
0.2 |
0.13" |
0" |
| 17 |
59.6° |
40.7° |
50.2° |
15.1 |
0.3 |
0.13" |
0.1" |
| 18 |
60° |
41.1° |
50.5° |
14.7 |
0.3 |
0.14" |
0" |
| 19 |
60.4° |
41.4° |
50.9° |
14.4 |
0.3 |
0.13" |
0" |
| 20 |
60.8° |
41.8° |
51.3° |
14 |
0.3 |
0.14" |
0.1" |
| 21 |
61.2° |
42.1° |
51.7° |
13.6 |
0.3 |
0.13" |
0" |
| 22 |
61.6° |
42.5° |
52° |
13.3 |
0.3 |
0.13" |
0" |
| 23 |
62° |
42.8° |
52.4° |
12.9 |
0.3 |
0.14" |
0.1" |
| 24 |
62.4° |
43.2° |
52.8° |
12.6 |
0.3 |
0.13" |
0" |
| 25 |
62.8° |
43.5° |
53.2° |
12.2 |
0.4 |
0.14" |
0" |
| 26 |
63.2° |
43.9° |
53.5° |
11.9 |
0.4 |
0.14" |
0" |
| 27 |
63.6° |
44.2° |
53.9° |
11.5 |
0.4 |
0.14" |
0.1" |
| 28 |
64° |
44.6° |
54.3° |
11.2 |
0.5 |
0.15" |
0" |
| 29 |
64.3° |
44.9° |
54.6° |
10.8 |
0.5 |
0.15" |
0" |
| 30 |
64.7° |
45.3° |
55° |
10.5 |
0.5 |
0.15" |
0" |
| |
|
|
|
|
|
|
|
| MONTH |
59° |
40.3° |
49.7° |
468 |
7.5 |
3.75" |
1.3" |
|
|
|
May:
Chicago 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 |
65.1° |
45.6° |
55.4° |
10.2 |
0.6 |
0.15" |
| 2 |
65.5° |
46° |
55.7° |
9.9 |
0.6 |
0.14" |
| 3 |
65.9° |
46.3° |
56.1° |
9.6 |
0.7 |
0.15" |
| 4 |
66.2° |
46.7° |
56.4° |
9.3 |
0.7 |
0.15" |
| 5 |
66.6° |
47° |
56.8° |
9 |
0.8 |
0.14" |
| 6 |
67° |
47.3° |
57.2° |
8.7 |
0.9 |
0.14" |
| 7 |
67.3° |
47.7° |
57.5° |
8.5 |
1 |
0.15" |
| 8 |
67.7° |
48° |
57.8° |
8.2 |
1 |
0.15" |
| 9 |
68.1° |
48.3° |
58.2° |
7.9 |
1.1 |
0.15" |
| 10 |
68.4° |
48.6° |
58.5° |
7.7 |
1.2 |
0.15" |
| 11 |
68.8° |
49° |
58.9° |
7.4 |
1.3 |
0.15" |
| 12 |
69.1° |
49.3° |
59.2° |
7.1 |
1.4 |
0.15" |
| 13 |
69.5° |
49.6° |
59.6° |
6.9 |
1.5 |
0.16" |
| 14 |
69.9° |
49.9° |
59.9° |
6.7 |
1.6 |
0.15" |
| 15 |
70.2° |
50.3° |
60.2° |
6.4 |
1.7 |
0.14" |
| 16 |
70.6° |
50.6° |
60.6° |
6.2 |
1.8 |
0.15" |
| 17 |
70.9° |
50.9° |
60.9° |
6 |
1.9 |
0.15" |
| 18 |
71.2° |
51.2° |
61.2° |
5.8 |
2 |
0.14" |
| 19 |
71.6° |
51.6° |
61.6° |
5.6 |
2.2 |
0.15" |
| 20 |
71.9° |
51.9° |
61.9° |
5.4 |
2.3 |
0.15" |
| 21 |
72.3° |
52.2° |
62.3° |
5.2 |
2.4 |
0.15" |
| 22 |
72.6° |
52.5° |
62.6° |
5 |
2.6 |
0.15" |
| 23 |
73° |
52.9° |
62.9° |
4.8 |
2.7 |
0.14" |
| 24 |
73.3° |
53.2° |
63.3° |
4.6 |
2.8 |
0.14" |
| 25 |
73.7° |
53.5° |
63.6° |
4.4 |
3 |
0.14" |
| 26 |
74° |
53.9° |
63.9° |
4.1 |
3.1 |
0.13" |
| 27 |
74.3° |
54.2° |
64.3° |
3.9 |
3.2 |
0.14" |
| 28 |
74.7° |
54.6° |
64.6° |
3.7 |
3.3 |
0.14" |
| 29 |
75° |
54.9° |
65° |
3.5 |
3.5 |
0.13" |
| 30 |
75.4° |
55.2° |
65.3° |
3.3 |
3.6 |
0.13" |
| 31 |
75.7° |
55.6° |
65.6° |
3.1 |
3.8 |
0.14" |
| |
|
|
|
|
|
|
| MONTH |
70.5° |
50.6° |
60.6° |
198.1 |
60.3 |
4.49" |
|
|
|
June:
Chicago 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° |
55.9° |
66° |
2.9 |
3.9 |
0.14" |
| 2 |
76.4° |
56.3° |
66.3° |
2.7 |
4 |
0.13" |
| 3 |
76.7° |
56.6° |
66.7° |
2.5 |
4.2 |
0.14" |
| 4 |
77° |
57° |
67° |
2.3 |
4.3 |
0.14" |
| 5 |
77.4° |
57.3° |
67.4° |
2.1 |
4.4 |
0.15" |
| 6 |
77.7° |
57.7° |
67.7° |
1.9 |
4.6 |
0.14" |
| 7 |
78° |
58.1° |
68° |
1.7 |
4.7 |
0.14" |
| 8 |
78.4° |
58.4° |
68.4° |
1.5 |
4.9 |
0.15" |
| 9 |
78.7° |
58.8° |
68.7° |
1.4 |
5.1 |
0.14" |
| 10 |
79° |
59.1° |
69.1° |
1.3 |
5.3 |
0.14" |
| 11 |
79.3° |
59.5° |
69.4° |
1.2 |
5.5 |
0.14" |
| 12 |
79.6° |
59.8° |
69.7° |
1.1 |
5.8 |
0.15" |
| 13 |
79.9° |
60.2° |
70° |
1 |
6 |
0.14" |
| 14 |
80.2° |
60.5° |
70.4° |
0.9 |
6.3 |
0.14" |
| 15 |
80.5° |
60.8° |
70.7° |
0.9 |
6.5 |
0.14" |
| 16 |
80.8° |
61.2° |
71° |
0.8 |
6.8 |
0.14" |
| 17 |
81.1° |
61.5° |
71.3° |
0.7 |
7 |
0.13" |
| 18 |
81.3° |
61.8° |
71.6° |
0.6 |
7.2 |
0.14" |
| 19 |
81.6° |
62.1° |
71.9° |
0.6 |
7.4 |
0.14" |
| 20 |
81.9° |
62.4° |
72.1° |
0.5 |
7.7 |
0.13" |
| 21 |
82.1° |
62.7° |
72.4° |
0.5 |
7.9 |
0.14" |
| 22 |
82.3° |
63° |
72.7° |
0.4 |
8.1 |
0.14" |
| 23 |
82.6° |
63.3° |
72.9° |
0.4 |
8.3 |
0.13" |
| 24 |
82.8° |
63.6° |
73.2° |
0.4 |
8.5 |
0.13" |
| 25 |
83° |
63.8° |
73.4° |
0.3 |
8.7 |
0.13" |
| 26 |
83.2° |
64.1° |
73.6° |
0.3 |
8.9 |
0.13" |
| 27 |
83.4° |
64.3° |
73.8° |
0.2 |
9.1 |
0.13" |
| 28 |
83.5° |
64.5° |
74° |
0.2 |
9.2 |
0.13" |
| 29 |
83.7° |
64.8° |
74.2° |
0.2 |
9.4 |
0.12" |
| 30 |
83.9° |
65° |
74.4° |
0.1 |
9.5 |
0.12" |
| |
|
|
|
|
|
|
| MONTH |
80.4° |
60.8° |
70.6° |
31.6 |
199.2 |
4.1" |
|
|
|
July:
Chicago 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 |
84° |
65.2° |
74.6° |
0.1 |
9.7 |
0.11" |
| 2 |
84.1° |
65.3° |
74.7° |
0.1 |
9.8 |
0.11" |
| 3 |
84.2° |
65.5° |
74.9° |
0.1 |
10 |
0.1" |
| 4 |
84.3° |
65.7° |
75° |
0.1 |
10.1 |
0.11" |
| 5 |
84.4° |
65.8° |
75.1° |
0.1 |
10.2 |
0.11" |
| 6 |
84.5° |
65.9° |
75.2° |
0.1 |
10.3 |
0.11" |
| 7 |
84.6° |
66.1° |
75.3° |
0.1 |
10.4 |
0.11" |
| 8 |
84.7° |
66.2° |
75.4° |
0.1 |
10.5 |
0.11" |
| 9 |
84.7° |
66.3° |
75.5° |
0.1 |
10.5 |
0.12" |
| 10 |
84.7° |
66.4° |
75.6° |
0.1 |
10.6 |
0.13" |
| 11 |
84.8° |
66.5° |
75.6° |
0.1 |
10.7 |
0.12" |
| 12 |
84.8° |
66.5° |
75.7° |
0.1 |
10.7 |
0.12" |
| 13 |
84.8° |
66.6° |
75.7° |
0.1 |
10.7 |
0.11" |
| 14 |
84.8° |
66.6° |
75.7° |
0.1 |
10.8 |
0.12" |
| 15 |
84.8° |
66.7° |
75.7° |
0.1 |
10.8 |
0.11" |
| 16 |
84.8° |
66.7° |
75.7° |
0.1 |
10.8 |
0.12" |
| 17 |
84.8° |
66.7° |
75.7° |
0.1 |
10.8 |
0.12" |
| 18 |
84.7° |
66.8° |
75.7° |
0.1 |
10.8 |
0.11" |
| 19 |
84.7° |
66.8° |
75.7° |
0.1 |
10.8 |
0.12" |
| 20 |
84.7° |
66.8° |
75.7° |
0.1 |
10.8 |
0.12" |
| 21 |
84.6° |
66.8° |
75.7° |
0.1 |
10.8 |
0.13" |
| 22 |
84.6° |
66.8° |
75.7° |
0.1 |
10.7 |
0.12" |
| 23 |
84.5° |
66.8° |
75.6° |
0.1 |
10.7 |
0.13" |
| 24 |
84.5° |
66.7° |
75.6° |
0.1 |
10.7 |
0.13" |
| 25 |
84.4° |
66.7° |
75.6° |
0.1 |
10.6 |
0.13" |
| 26 |
84.3° |
66.7° |
75.5° |
0 |
10.6 |
0.13" |
| 27 |
84.3° |
66.7° |
75.5° |
0 |
10.5 |
0.13" |
| 28 |
84.2° |
66.6° |
75.4° |
0 |
10.5 |
0.12" |
| 29 |
84.1° |
66.6° |
75.4° |
0 |
10.4 |
0.13" |
| 30 |
84.1° |
66.6° |
75.3° |
0 |
10.4 |
0.14" |
| 31 |
84° |
66.5° |
75.3° |
0 |
10.3 |
0.13" |
| |
|
|
|
|
|
|
| MONTH |
84.5° |
66.4° |
75.4° |
2.5 |
326 |
3.71" |
|
|
|
August:
Chicago 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 |
83.9° |
66.5° |
75.2° |
0 |
10.2 |
0.15" |
| 2 |
83.8° |
66.4° |
75.1° |
0.1 |
10.2 |
0.15" |
| 3 |
83.8° |
66.4° |
75.1° |
0.1 |
10.1 |
0.14" |
| 4 |
83.7° |
66.3° |
75° |
0.1 |
10.1 |
0.14" |
| 5 |
83.6° |
66.3° |
75° |
0.1 |
10 |
0.14" |
| 6 |
83.5° |
66.2° |
74.9° |
0.1 |
10 |
0.14" |
| 7 |
83.5° |
66.2° |
74.8° |
0.1 |
9.9 |
0.12" |
| 8 |
83.4° |
66.1° |
74.7° |
0.1 |
9.8 |
0.13" |
| 9 |
83.3° |
66° |
74.7° |
0.1 |
9.8 |
0.14" |
| 10 |
83.2° |
66° |
74.6° |
0.1 |
9.7 |
0.13" |
| 11 |
83.1° |
65.9° |
74.5° |
0.1 |
9.6 |
0.14" |
| 12 |
83.1° |
65.8° |
74.4° |
0.1 |
9.5 |
0.14" |
| 13 |
83° |
65.7° |
74.3° |
0.1 |
9.4 |
0.14" |
| 14 |
82.9° |
65.6° |
74.2° |
0.1 |
9.3 |
0.15" |
| 15 |
82.8° |
65.5° |
74.1° |
0.1 |
9.2 |
0.14" |
| 16 |
82.7° |
65.4° |
74° |
0.1 |
9.1 |
0.15" |
| 17 |
82.6° |
65.3° |
73.9° |
0.1 |
9 |
0.15" |
| 18 |
82.5° |
65.2° |
73.8° |
0.1 |
8.9 |
0.14" |
| 19 |
82.4° |
65° |
73.7° |
0.1 |
8.8 |
0.13" |
| 20 |
82.2° |
64.9° |
73.6° |
0.1 |
8.6 |
0.14" |
| 21 |
82.1° |
64.7° |
73.4° |
0.1 |
8.5 |
0.13" |
| 22 |
82° |
64.6° |
73.3° |
0.1 |
8.4 |
0.13" |
| 23 |
81.8° |
64.4° |
73.1° |
0.1 |
8.2 |
0.13" |
| 24 |
81.7° |
64.2° |
73° |
0.1 |
8.1 |
0.13" |
| 25 |
81.5° |
64° |
72.8° |
0.2 |
7.9 |
0.13" |
| 26 |
81.4° |
63.8° |
72.6° |
0.2 |
7.8 |
0.13" |
| 27 |
81.2° |
63.6° |
72.4° |
0.2 |
7.6 |
0.13" |
| 28 |
81° |
63.4° |
72.2° |
0.3 |
7.5 |
0.13" |
| 29 |
80.8° |
63.1° |
72° |
0.3 |
7.3 |
0.13" |
| 30 |
80.6° |
62.9° |
71.8° |
0.4 |
7.1 |
0.14" |
| 31 |
80.4° |
62.6° |
71.5° |
0.4 |
6.9 |
0.14" |
| |
|
|
|
|
|
|
| MONTH |
82.5° |
65.1° |
73.8° |
4.3 |
276.5 |
4.25" |
|
|
|
September:
Chicago 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 |
80.2° |
62.3° |
71.3° |
0.4 |
6.7 |
0.12" |
| 2 |
80° |
62.1° |
71° |
0.5 |
6.5 |
0.12" |
| 3 |
79.7° |
61.8° |
70.7° |
0.5 |
6.3 |
0.11" |
| 4 |
79.5° |
61.5° |
70.5° |
0.6 |
6.1 |
0.12" |
| 5 |
79.2° |
61.1° |
70.2° |
0.7 |
5.8 |
0.12" |
| 6 |
78.9° |
60.8° |
69.9° |
0.8 |
5.6 |
0.11" |
| 7 |
78.6° |
60.5° |
69.5° |
0.9 |
5.5 |
0.11" |
| 8 |
78.3° |
60.1° |
69.2° |
1 |
5.3 |
0.11" |
| 9 |
78° |
59.8° |
68.9° |
1.2 |
5 |
0.1" |
| 10 |
77.7° |
59.4° |
68.6° |
1.3 |
4.8 |
0.1" |
| 11 |
77.4° |
59° |
68.2° |
1.4 |
4.6 |
0.11" |
| 12 |
77° |
58.6° |
67.8° |
1.6 |
4.4 |
0.1" |
| 13 |
76.7° |
58.3° |
67.5° |
1.7 |
4.2 |
0.1" |
| 14 |
76.3° |
57.9° |
67.1° |
1.9 |
4 |
0.1" |
| 15 |
76° |
57.5° |
66.7° |
2.1 |
3.9 |
0.1" |
| 16 |
75.6° |
57.1° |
66.3° |
2.4 |
3.7 |
0.1" |
| 17 |
75.2° |
56.6° |
65.9° |
2.6 |
3.5 |
0.11" |
| 18 |
74.8° |
56.2° |
65.5° |
2.8 |
3.4 |
0.1" |
| 19 |
74.4° |
55.8° |
65.1° |
3 |
3.2 |
0.11" |
| 20 |
74° |
55.4° |
64.7° |
3.2 |
3 |
0.11" |
| 21 |
73.6° |
55° |
64.3° |
3.4 |
2.8 |
0.11" |
| 22 |
73.2° |
54.6° |
63.9° |
3.7 |
2.6 |
0.11" |
| 23 |
72.8° |
54.2° |
63.5° |
3.9 |
2.4 |
0.1" |
| 24 |
72.4° |
53.7° |
63.1° |
4.1 |
2.2 |
0.11" |
| 25 |
72° |
53.3° |
62.6° |
4.4 |
2.1 |
0.11" |
| 26 |
71.5° |
52.9° |
62.2° |
4.7 |
2 |
0.1" |
| 27 |
71.1° |
52.5° |
61.8° |
5.1 |
1.9 |
0.1" |
| 28 |
70.7° |
52.1° |
61.4° |
5.4 |
1.7 |
0.1" |
| 29 |
70.2° |
51.7° |
61° |
5.7 |
1.6 |
0.09" |
| 30 |
69.8° |
51.3° |
60.5° |
6 |
1.5 |
0.1" |
| |
|
|
|
|
|
|
| MONTH |
75.5° |
57.1° |
66.3° |
77 |
116.3 |
3.19" |
|
|
|
October:
Chicago 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 |
69.4° |
50.9° |
60.1° |
6.3 |
1.4 |
0.11" |
0" |
| 2 |
68.9° |
50.5° |
59.7° |
6.6 |
1.3 |
0.12" |
0" |
| 3 |
68.5° |
50.1° |
59.3° |
6.9 |
1.2 |
0.11" |
0" |
| 4 |
68° |
49.7° |
58.9° |
7.2 |
1.1 |
0.11" |
0" |
| 5 |
67.6° |
49.3° |
58.5° |
7.6 |
1 |
0.11" |
0" |
| 6 |
67.2° |
48.9° |
58.1° |
7.9 |
1 |
0.11" |
0" |
| 7 |
66.7° |
48.6° |
57.6° |
8.3 |
0.9 |
0.11" |
0" |
| 8 |
66.3° |
48.2° |
57.2° |
8.6 |
0.9 |
0.11" |
0" |
| 9 |
65.8° |
47.8° |
56.8° |
9 |
0.8 |
0.11" |
0" |
| 10 |
65.4° |
47.5° |
56.4° |
9.3 |
0.7 |
0.12" |
0" |
| 11 |
65° |
47.1° |
56° |
9.6 |
0.7 |
0.11" |
0" |
| 12 |
64.5° |
46.8° |
55.6° |
9.9 |
0.6 |
0.12" |
0" |
| 13 |
64.1° |
46.4° |
55.2° |
10.3 |
0.5 |
0.11" |
0" |
| 14 |
63.6° |
46.1° |
54.8° |
10.6 |
0.4 |
0.11" |
0" |
| 15 |
63.2° |
45.7° |
54.4° |
10.9 |
0.4 |
0.12" |
0" |
| 16 |
62.7° |
45.4°° |
54° |
11.3 |
0.3 |
0.11" |
0" |
| 17 |
62.3° |
45° |
53.7° |
11.6 |
0.3 |
0.11" |
0" |
| 18 |
61.8° |
44.7° |
53.3° |
12 |
0.3 |
0.12" |
0" |
| 19 |
61.4° |
44.3° |
52.9° |
12.4 |
0.2 |
0.11" |
0" |
| 20 |
60.9° |
44° |
52.5° |
12.8 |
0.2 |
0.1" |
0" |
| 21 |
60.5° |
43.6° |
52.1° |
13.1 |
0.2 |
0.11" |
0.1" |
| 22 |
60° |
43.3° |
51.7° |
13.5 |
0.2 |
0.11" |
0" |
| 23 |
59.6° |
42.9° |
51.3° |
13.9 |
0.2 |
0.11" |
0" |
| 24 |
59.1° |
42.6° |
50.9° |
14.3 |
0.1 |
0.11" |
0" |
| 25 |
58.7° |
42.2° |
50.5° |
14.7 |
0.1 |
0.11" |
0" |
| 26 |
58.2° |
41.9° |
50° |
15.1 |
0.1 |
0.11" |
0" |
| 27 |
57.8° |
41.5° |
49.6° |
15.5 |
0.1 |
0.11" |
0" |
| 28 |
57.3° |
41.2° |
49.2° |
15.8 |
0.1 |
0.11" |
0" |
| 29 |
56.8° |
40.8° |
48.8° |
16.3 |
0.1 |
0.11" |
0.1" |
| 30 |
56.4° |
40.4° |
48.4° |
16.7 |
0.1 |
0.1" |
0" |
| 31 |
55.9° |
40.1° |
48° |
17.1 |
0.1 |
0.1" |
0" |
| |
|
|
|
|
|
|
|
| MONTH |
62.7° |
45.4° |
54° |
355.1 |
15.6 |
3.43" |
0.2" |
|
|
|
November:
Chicago 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 |
55.4° |
39.7° |
47.6° |
17.5 |
0 |
0.09" |
0" |
| 2 |
54.9° |
39.3° |
47.1° |
17.9 |
0 |
0.09" |
0" |
| 3 |
54.4° |
38.9° |
46.7° |
18.4 |
0 |
0.09" |
0" |
| 4 |
54° |
38.6° |
46.3° |
18.8 |
0 |
0.09" |
0.1" |
| 5 |
53.5° |
38.2° |
45.8° |
19.2 |
0 |
0.09" |
0" |
| 6 |
53° |
37.8° |
45.4° |
19.6 |
0 |
0.09" |
0" |
| 7 |
52.5° |
37.4° |
45° |
20.1 |
0 |
0.08" |
0" |
| 8 |
52° |
37° |
44.5° |
20.5 |
0 |
0.08" |
0" |
| 9 |
51.5° |
36.6° |
44.1° |
21 |
0 |
0.08" |
0.1" |
| 10 |
51° |
36.2° |
43.6° |
21.4 |
0 |
0.08" |
0" |
| 11 |
50.5° |
35.8° |
43.2° |
21.8 |
0 |
0.08" |
0" |
| 12 |
50° |
35.4° |
42.7° |
22.3 |
0 |
0.08" |
0.1" |
| 13 |
49.5° |
35° |
42.3° |
22.7 |
0 |
0.08" |
0" |
| 14 |
49.1° |
34.6° |
41.8° |
23.2 |
0 |
0.08" |
0.1" |
| 15 |
48.6° |
34.2° |
41.4° |
23.6 |
0 |
0.08" |
0" |
| 16 |
48.1° |
33.8° |
41° |
24 |
0 |
0.08" |
0.1" |
| 17 |
47.6° |
33.5° |
40.5° |
24.5 |
0 |
0.08" |
0" |
| 18 |
47.1° |
33.1° |
40.1° |
24.9 |
0 |
0.08" |
0.1" |
| 19 |
46.6° |
32.7° |
39.7° |
25.3 |
0 |
0.07" |
0" |
| 20 |
46.1° |
32.3° |
39.2° |
25.8 |
0 |
0.08" |
0.1" |
| 21 |
45.7° |
31.9° |
38.8° |
26.2 |
0 |
0.08" |
0.1" |
| 22 |
45.2° |
31.5° |
38.4° |
26.6 |
0 |
0.08" |
0.1" |
| 23 |
44.7° |
31.2° |
38° |
27 |
0 |
0.07" |
0.1" |
| 24 |
44.3° |
30.8° |
37.5° |
27.5 |
0 |
0.08" |
0.1" |
| 25 |
43.8° |
30.4° |
37.1° |
27.9 |
0 |
0.08" |
0.1" |
| 26 |
43.4° |
30.1° |
36.7° |
28.3 |
0 |
0.07" |
0.1" |
| 27 |
43° |
29.7° |
36.3° |
28.7 |
0 |
0.08" |
0.1" |
| 28 |
42.5° |
29.4° |
36° |
29 |
0 |
0.07" |
0.1" |
| 29 |
42.1° |
29° |
35.6° |
29.4 |
0 |
0.08" |
0.2" |
| 30 |
41.7° |
28.7° |
35.2° |
29.8 |
0 |
0.08" |
0.1" |
| |
|
|
|
|
|
|
|
| MONTH |
48.4° |
34.1° |
41.3° |
712.9 |
0 |
2.42" |
1.8" |
|
|
|
December:
Chicago 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 |
41.3° |
28.4° |
34.8° |
30.2 |
0 |
0.08" |
0.2" |
| 2 |
40.9° |
28.1° |
34.5° |
30.5 |
0 |
0.08" |
0.2" |
| 3 |
40.5° |
27.7° |
34.1° |
30.9 |
0 |
0.07" |
0.2" |
| 4 |
40.1° |
27.4° |
33.8° |
31.2 |
0 |
0.08" |
0.2" |
| 5 |
39.8° |
27.1° |
33.4° |
31.5 |
0 |
0.08" |
0.3" |
| 6 |
39.4° |
26.8° |
33.1° |
31.9 |
0 |
0.07" |
0.2" |
| 7 |
39° |
26.6° |
32.8° |
32.2 |
0 |
0.08" |
0.2" |
| 8 |
38.7° |
26.3° |
32.5° |
32.5 |
0 |
0.07" |
0.2" |
| 9 |
38.4° |
26° |
32.2° |
32.8 |
0 |
0.08" |
0.2" |
| 10 |
38° |
25.7° |
31.9° |
33.1 |
0 |
0.07" |
0.3" |
| 11 |
37.7° |
25.5° |
31.6° |
33.4 |
0 |
0.07" |
0.2" |
| 12 |
37.4° |
25.2° |
31.3° |
33.7 |
0 |
0.06" |
0.2" |
| 13 |
37.1° |
25° |
31° |
33.9 |
0 |
0.07" |
0.3" |
| 14 |
36.8° |
24.7° |
30.8° |
34.2 |
0 |
0.07" |
0.2" |
| 15 |
36.6° |
24.5° |
30.5° |
34.5 |
0 |
0.06" |
0.2" |
| 16 |
36.3° |
24.2° |
30.3° |
34.7 |
0 |
0.06" |
0.3" |
| 17 |
36° |
24° |
30° |
35 |
0 |
0.07" |
0.2" |
| 18 |
35.8° |
23.8° |
29.8° |
35.2 |
0 |
0.06" |
0.3" |
| 19 |
35.5° |
23.6° |
29.5° |
35.5 |
0 |
0.07" |
0.2" |
| 20 |
35.3° |
23.3° |
29.3° |
35.7 |
0 |
0.06" |
0.2" |
| 21 |
35° |
23.1° |
29.1° |
35.9 |
0 |
0.06" |
0.3" |
| 22 |
34.8° |
22.9° |
28.8° |
36.1 |
0 |
0.07" |
0.3" |
| 23 |
34.6° |
22.7° |
28.6° |
36.4 |
0 |
0.06" |
0.2" |
| 24 |
34.4° |
22.5° |
28.4° |
36.6 |
0 |
0.07" |
0.3" |
| 25 |
34.2° |
22.2° |
28.2° |
36.8 |
0 |
0.06" |
0.3" |
| 26 |
34° |
22° |
28° |
37 |
0 |
0.06" |
0.2" |
| 27 |
33.8° |
21.8° |
27.8° |
37.2 |
0 |
0.06" |
0.3" |
| 28 |
33.6° |
21.6° |
27.6° |
37.4 |
0 |
0.07" |
0.3" |
| 29 |
33.4° |
21.4° |
27.4° |
37.6 |
0 |
0.06" |
0.3" |
| 30 |
33.2° |
21.2° |
27.2° |
37.8 |
0 |
0.06" |
0.3" |
| 31 |
33° |
21° |
27° |
38 |
0 |
0.07" |
0.3" |
| |
|
|
|
|
|
|
|
| MONTH |
36.6° |
24.4° |
30.5° |
1069.4 |
0 |
2.11" |
7.6" |
|
|
|
Monthly/Annual:
Chicago Monthly/Annual Temp and Precip Normals (1991-2020)
| Chicago Monthly and Yearly Normals (1991-2020) |
| |
JAN |
FEB |
MAR |
APR |
MAY |
JUN |
JUL |
AUG |
SEP |
OCT |
NOV |
DEC |
ANNUAL |
| HIGH |
31.6 |
35.7 |
47.0 |
59.0 |
70.5 |
80.4 |
84.5 |
82.5 |
75.5 |
62.7 |
48.4 |
36.6 |
59.5 |
| LOW |
18.8 |
21.8 |
31.0 |
40.3 |
50.6 |
60.8 |
66.4 |
65.1 |
57.1 |
45.4 |
34.1 |
24.4 |
43.0 |
| AVERAGE |
25.2 |
28.8 |
39.0 |
49.7 |
60.6 |
70.6 |
75.4 |
73.8 |
66.3 |
54.0 |
41.3 |
30.5 |
51.2 |
| HEATING DEGREE DAYS |
1234 |
1015 |
808 |
468 |
198 |
31 |
2 |
4 |
77 |
355 |
713 |
1069 |
5974 |
| COOLING DEGREE DAYS |
0 |
0 |
2 |
8 |
60 |
199 |
326 |
276 |
116 |
15 |
0 |
0 |
1003 |
| PRECIPITATION |
1.99 |
1.97 |
2.45 |
3.75 |
4.49 |
4.10 |
3.71 |
4.25 |
3.19 |
3.43 |
2.42 |
2.11 |
37.86 |
| SNOWFALL |
11.3 |
10.7 |
5.5 |
1.3 |
T |
0.0 |
0.0 |
0.0 |
0.0 |
0.2 |
1.8 |
7.6 |
38.4 |
| Chicago Mean Number of Days (1991-2020) |
| Temperatures |
JAN |
FEB |
MAR |
APR |
MAY |
JUN |
JUL |
AUG |
SEP |
OCT |
NOV |
DEC |
ANNUAL |
| HIGHS >=90 |
- |
- |
- |
- |
0.8 |
4.1 |
6.5 |
3.7 |
1.6 |
- |
- |
- |
16.7 |
| HIGHS >=50 |
1.6 |
3.2 |
11.5 |
23.4 |
30.3 |
30.0 |
31.0 |
31.0 |
30.0 |
27.8 |
12.9 |
3.4 |
236.1 |
| HIGHS <=32 |
16.5 |
11.2 |
3.0 |
0.1 |
- |
- |
- |
- |
- |
- |
2.2 |
10.4 |
43.4 |
| LOWS <=32 |
28.1 |
24.4 |
19.9 |
6.0 |
0.2 |
- |
- |
- |
0.1 |
2.7 |
14.5 |
25.4 |
121.3 |
| LOWS <=0 |
3.5 |
1.8 |
0.2 |
- |
- |
- |
- |
- |
- |
- |
- |
1.1 |
6.5 |
|
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