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Petaluma August Weather

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

Typical Petaluma August Weather 1991–2020
Average daily high	81.5 °F
Average daily low	53.1 °F
Average monthly precipitation	0.0 inches
Average monthly snow	none
Daily chance of precipitation	0.97%
Daily chance of snow	0%

Petaluma August Weather Records 1893–2024
Highest temperature	105 °F	August 30, 1968
Lowest temperature	39 °F	August 1, 1919
Highest daily low	68 °F	August 19, 1929
Lowest daily high	59 °F	August 15, 1918
Hottest average high temperature	88.4 °F	1969
Coldest average high temperature	70.2 °F	1918
Most daily precipitation	1.0 inches	August 20, 1997
Most monthly precipitation	1.0 inches	1997
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	81.3	53.1	104	39
August 2	81.3	53.1	103	42
August 3	81.3	53.0	103	44
August 4	81.3	53.0	99	41
August 5	81.3	53.0	99	39
August 6	81.2	53.0	103	41
August 7	81.1	53.0	101	42
August 8	81.1	53.0	98	44
August 9	81.1	53.0	103	42
August 10	81.2	53.1	103	42
August 11	81.1	53.0	102	43
August 12	81.2	53.0	99	40
August 13	81.4	53.1	95	44
August 14	81.5	53.1	102	43
August 15	81.5	53.2	102	42
August 16	81.5	53.2	100	44
August 17	81.5	53.2	100	42
August 18	81.6	53.2	98	42
August 19	81.8	53.1	103	42
August 20	81.9	53.1	100	42
August 21	82.0	53.1	97	42
August 22	82.2	53.1	99	43
August 23	82.3	53.0	99	42
August 24	82.4	52.9	103	42
August 25	82.4	52.9	104	41
August 26	82.4	52.9	99	42
August 27	82.3	52.8	104	43
August 28	82.3	52.8	100	43
August 29	82.3	52.9	103	40
August 30	82.2	52.9	105	42
August 31	82.0	52.9	105	43

Weather Station Details

Years	Station	Coordinates
1893–2024	Petaluma Airport	location