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Fairfield January Weather

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

Typical Fairfield January Weather 1991–2020
Average daily high	56.7 °F
Average daily low	39.3 °F
Average monthly precipitation	4.7 inches
Average monthly snow	none
Daily chance of precipitation	33.4%
Daily chance of snow	0%

Fairfield January Weather Records 1950–2024
Highest temperature	78 °F	January 18, 2021
Lowest temperature	18 °F	January 1, 1979
Highest daily low	58 °F	January 2, 1997
Lowest daily high	36 °F	January 6, 1961
Hottest average high temperature	67.0 °F	2014
Coldest average high temperature	49.6 °F	1972
Most daily precipitation	3.7 inches	January 11, 1979
Most monthly precipitation	13.9 inches	2017
Most daily snow	none	-
Most monthly snow	none	-

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	55.6	38.7	68	18
January 2	55.6	38.8	69	22
January 3	55.6	38.8	67	22
January 4	55.7	38.9	68	23
January 5	55.8	38.9	68	24
January 6	55.8	39.0	75	25
January 7	55.9	39.1	69	25
January 8	55.9	39.1	65	26
January 9	56.0	39.2	67	25
January 10	56.0	39.3	72	24
January 11	56.2	39.4	71	27
January 12	56.2	39.5	69	26
January 13	56.3	39.6	74	24
January 14	56.4	39.7	76	24
January 15	56.5	39.7	72	23
January 16	56.6	39.8	73	24
January 17	56.7	39.9	73	24
January 18	56.9	40.0	78	28
January 19	57.0	40.1	73	30
January 20	57.2	40.2	72	29
January 21	57.4	40.3	72	25
January 22	57.6	40.4	76	30
January 23	57.9	40.5	73	28
January 24	58.1	40.5	74	24
January 25	58.3	40.7	73	27
January 26	58.5	40.8	69	30
January 27	58.8	40.9	69	26
January 28	58.9	41.0	71	26
January 29	59.1	41.0	70	23
January 30	59.3	41.2	70	23
January 31	59.6	41.3	77	25

Weather Station Details

Years	Station	Coordinates
1950–2024	Fairfield	location