Severe Thunderstorms in the Southern Plains; Heavy to Excessive Rainfall in South Central Texas

Widespread rain may produce flash flooding across the Southern Plains into the Ozarks today. Numerous instances of flash flooding are expected in south-central Texas, including the Hill Country. There will also be a risk of isolated severe thunderstorms across the southern Plains today, where an instance or two of severe wind, hail, or a brief tornado may occur. 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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Severe Thunderstorms in the Southern Plains; Heavy to Excessive Rainfall in South Central Texas

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