Frigid Airmass to Bring Significantly Colder Temperatures; Heavy Lake-effect Snow; Fire Concerns Across the Central Gulf Coast

A frigid cold airmass will bring significantly colder weather across the eastern two thirds of the country early this week. Temperatures will tie or break many records across the Southeast through tonight. Moderate to heavy lake effect snow will continue downwind of the Great Lakes. Gusty winds and dry conditions will support an elevated fire weather threat across the Central Gulf Coast. Read More >

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

August Normals for Chicago for Temperature and Precipitation

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

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Frigid Airmass to Bring Significantly Colder Temperatures; Heavy Lake-effect Snow; Fire Concerns Across the Central Gulf Coast

August Normals For Temperature, and Precipitation for Chicago, IL