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Fairfield August Weather

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

Typical Fairfield August Weather 1991–2020
Average daily high	89.4 °F
Average daily low	57.6 °F
Average monthly precipitation	0.0 inches
Average monthly snow	none
Daily chance of precipitation	0.65%
Daily chance of snow	0%

Fairfield August Weather Records 1950–2024
Highest temperature	111 °F	August 5, 1998
Lowest temperature	35 °F	August 15, 1986
Highest daily low	76 °F	August 16, 2020
Lowest daily high	66 °F	August 31, 2000
Hottest average high temperature	94.5 °F	1969
Coldest average high temperature	81.9 °F	1976
Most daily precipitation	1.0 inches	August 22, 1968
Most monthly precipitation	1.2 inches	1968
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
August 1	89.9	57.7	107	45
August 2	90.0	57.7	107	48
August 3	90.0	57.7	104	49
August 4	90.0	57.6	110	48
August 5	90.0	57.6	111	43
August 6	89.9	57.6	110	44
August 7	89.8	57.5	107	48
August 8	89.7	57.5	108	46
August 9	89.6	57.5	110	48
August 10	89.5	57.5	110	47
August 11	89.4	57.5	106	48
August 12	89.4	57.5	105	47
August 13	89.3	57.5	106	44
August 14	89.4	57.5	107	48
August 15	89.4	57.5	107	35
August 16	89.4	57.5	105	40
August 17	89.3	57.5	106	50
August 18	89.4	57.4	105	44
August 19	89.5	57.4	102	40
August 20	89.6	57.5	104	43
August 21	89.6	57.5	101	44
August 22	89.7	57.5	104	47
August 23	89.8	57.5	104	45
August 24	89.8	57.5	100	49
August 25	89.8	57.4	106	48
August 26	89.6	57.4	105	47
August 27	89.4	57.3	106	45
August 28	89.2	57.2	107	47
August 29	89.2	57.2	107	41
August 30	89.1	57.1	106	48
August 31	88.8	57.1	103	49

Weather Station Details

Years	Station	Coordinates
1950–2024	Fairfield	location