Heat Wave Expands to the East Coast; Flash Flooding Likely in the Central Plains into the Midwest; Severe Thunderstorms in the Northeast

Dangerous, prolonged heat is ongoing in the Mid-South to Mid-Mississippi Valley and heat expands into the Northeast for a brief period today. Widely scattered instances of flash flooding due to heavy rains are forecast from northeast Kansas to much of Indiana. Scattered strong to severe thunderstorms are possible across parts of New England, northern Mid-Atlantic, and North Dakota. Read More >

CHICAGO NORMALS (1991-2020)
JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP	OCT	NOV	DEC

October Normals for Chicago for Temperature, Precipitation and Snowfall

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

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Heat Wave Expands to the East Coast; Flash Flooding Likely in the Central Plains into the Midwest; Severe Thunderstorms in the Northeast

October Normals for Temperature, Precipitation and Snowfall for Chicago, IL