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Fairfield January Weather

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

Typical Fairfield January Weather 1991–2020
Average daily high	40.0 °F
Average daily low	23.2 °F
Average monthly precipitation	3.3 inches
Average monthly snow	3.6 inches
Daily chance of precipitation	29.7%
Daily chance of snow	7.3%

Fairfield January Weather Records 1895–2024
Highest temperature	77 °F	January 24, 1943
Lowest temperature	-23 °F	January 19, 1994
Highest daily low	65 °F	January 25, 1950
Lowest daily high	-2 °F	January 20, 1985
Hottest average high temperature	52.7 °F	1933
Coldest average high temperature	24.2 °F	1977
Most daily precipitation	3.4 inches	January 5, 1917
Most monthly precipitation	12.2 inches	1949
Most daily snow	8.0 inches	January 12, 1964
Most monthly snow	21.5 inches	1977

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	41.2	25.1	68	-10
January 2	41.1	24.9	69	-5
January 3	41.0	24.8	68	-3
January 4	40.8	24.6	68	-2
January 5	40.6	24.4	65	-11
January 6	40.4	24.1	65	-8
January 7	40.3	23.9	68	-18
January 8	40.4	23.9	69	-11
January 9	40.5	24.0	65	-7
January 10	40.3	24.0	67	-15
January 11	40.2	23.8	72	-18
January 12	40.1	23.7	70	-18
January 13	40.1	23.6	68	-17
January 14	40.0	23.4	66	-9
January 15	40.0	23.3	68	-8
January 16	39.9	23.2	72	-15
January 17	39.9	23.1	69	-23
January 18	40.0	23.1	66	-22
January 19	40.1	23.2	73	-23
January 20	40.3	23.2	70	-17
January 21	40.4	23.2	73	-17
January 22	40.6	23.2	65	-8
January 23	40.7	23.3	73	-10
January 24	40.8	23.3	77	-12
January 25	40.9	23.4	72	-5
January 26	40.9	23.3	70	-18
January 27	40.8	23.2	68	-22
January 28	40.9	23.2	69	-16
January 29	41.0	23.4	70	-9
January 30	41.1	23.5	67	-10
January 31	41.4	23.6	70	-10

Weather Station Details

Years	Station	Coordinates
1895–2024	Fairfield Radio WFIW	location