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Charleston January Weather

Averages and records for weather in Charleston, Illinois in the month of January.

Typical Charleston January Weather 1991–2020
Average daily high	37.1 °F
Average daily low	21.1 °F
Average monthly precipitation	2.9 inches
Average monthly snow	9.1 inches
Daily chance of precipitation	32.8%
Daily chance of snow	14.7%

Charleston January Weather Records 1896–2024
Highest temperature	71 °F	January 23, 1909
Lowest temperature	-27 °F	January 19, 1994
Highest daily low	64 °F	January 25, 1950
Lowest daily high	-8 °F	January 20, 1985
Hottest average high temperature	49.4 °F	1933
Coldest average high temperature	21.2 °F	1977
Most daily precipitation	3.8 inches	January 11, 2020
Most monthly precipitation	9.8 inches	1950
Most daily snow	12.0 inches	January 30, 1982
Most monthly snow	32.1 inches	1996

Note: Daily averages are a moving average which includes 14 days before and after

Day	Average (°F)		Record (°F)
Day	High	Low	High	Low
January 1	38.8	23.0	65	-12
January 2	38.7	22.8	64	-9
January 3	38.6	22.7	65	-14
January 4	38.3	22.4	65	-9
January 5	38.1	22.1	60	-17
January 6	37.8	21.9	62	-11
January 7	37.7	21.7	63	-22
January 8	37.7	21.7	63	-10
January 9	37.8	21.8	63	-8
January 10	37.7	21.7	61	-19
January 11	37.5	21.5	63	-14
January 12	37.3	21.3	69	-21
January 13	37.2	21.2	64	-21
January 14	37.2	21.1	67	-12
January 15	37.1	21.0	66	-21
January 16	37.0	20.9	65	-14
January 17	37.0	20.7	70	-20
January 18	37.0	20.8	64	-20
January 19	37.0	20.8	65	-27
January 20	37.2	20.8	69	-22
January 21	37.4	20.8	67	-18
January 22	37.4	20.9	62	-14
January 23	37.5	20.9	71	-17
January 24	37.6	21.0	69	-24
January 25	37.6	21.0	69	-12
January 26	37.6	20.9	69	-11
January 27	37.6	20.9	65	-17
January 28	37.7	20.9	67	-13
January 29	37.8	21.0	63	-13
January 30	37.9	21.1	62	-12
January 31	38.1	21.3	68	-12

Weather Station Details

Years	Station	Coordinates
1896–2024	Charleston	location