Flooding Possible in the Southwest U.S.; Coastal Storm to Impact the East

Heavy to excessive rainfall is expected today into Wednesday over New Mexico into far west Texas. Flash flooding and debris flows in wildfire burn areas will be possible. A strong coastal storm will develop off the Mid-Atlantic coast Wednesday, intensifying toward southern New England this weekend. Significant coastal flooding, strong rip currents, and beach erosion from high surf expected. Read More >

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

December Normals for Chicago for Temperature, Precipitation and Snowfall

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

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Flooding Possible in the Southwest U.S.; Coastal Storm to Impact the East

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