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Fairfield December Weather

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

Typical Fairfield December Weather 1991–2020
Average daily high	43.9 °F
Average daily low	27.5 °F
Average monthly precipitation	3.3 inches
Average monthly snow	4.1 inches
Daily chance of precipitation	31.2%
Daily chance of snow	5.7%

Fairfield December Weather Records 1895–2024
Highest temperature	74 °F	December 2, 1982
Lowest temperature	-18 °F	December 22, 1989
Highest daily low	63 °F	December 2, 1982
Lowest daily high	-5 °F	December 22, 1989
Hottest average high temperature	56.4 °F	2021
Coldest average high temperature	29.2 °F	2000
Most daily precipitation	4.0 inches	December 3, 1982
Most monthly precipitation	9.8 inches	1982
Most daily snow	10.0 inches	December 26, 2012
Most monthly snow	16.0 inches	2012

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

Day	Average (°F)		Record (°F)
Day	High	Low	High	Low
December 1	48.9	31.0	71	5
December 2	48.5	30.8	74	4
December 3	48.1	30.5	73	-2
December 4	47.6	30.1	71	9
December 5	47.2	29.8	70	11
December 6	46.8	29.5	72	0
December 7	46.5	29.3	74	2
December 8	46.2	29.2	69	2
December 9	45.9	29.0	69	-9
December 10	45.5	28.7	72	-10
December 11	45.1	28.4	71	-7
December 12	44.8	28.1	72	-6
December 13	44.5	28.0	68	-3
December 14	44.3	27.7	70	-10
December 15	44.0	27.5	73	-10
December 16	43.8	27.5	67	-13
December 17	43.6	27.4	70	-10
December 18	43.3	27.1	69	-6
December 19	43.1	26.9	61	-6
December 20	42.9	26.8	67	-9
December 21	42.8	26.6	68	-16
December 22	42.7	26.5	65	-18
December 23	42.5	26.4	69	-17
December 24	42.3	26.2	66	-13
December 25	42.1	26.2	71	-10
December 26	41.9	26.1	73	-4
December 27	41.8	26.0	72	-4
December 28	41.8	25.9	68	-14
December 29	41.8	25.8	69	-5
December 30	41.6	25.5	68	-11
December 31	41.4	25.3	71	-7

Weather Station Details

Years	Station	Coordinates
1895–2024	Fairfield Radio WFIW	location