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Petaluma October Weather

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

Typical Petaluma October Weather 1991–2020
Average daily high	76.8 °F
Average daily low	47.8 °F
Average monthly precipitation	1.2 inches
Average monthly snow	none
Daily chance of precipitation	11.7%
Daily chance of snow	0%

Petaluma October Weather Records 1893–2024
Highest temperature	106 °F	October 2, 1980
Lowest temperature	25 °F	October 30, 1948
Highest daily low	70 °F	October 6, 1930
Lowest daily high	52 °F	October 16, 1984
Hottest average high temperature	82.7 °F	2020
Coldest average high temperature	67.0 °F	1916
Most daily precipitation	5.2 inches	October 24, 2021
Most monthly precipitation	8.0 inches	2021
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
October 1	80.0	49.8	103	37
October 2	80.0	49.8	106	38
October 3	79.8	49.6	102	39
October 4	79.6	49.5	103	36
October 5	79.3	49.4	103	37
October 6	79.1	49.2	99	35
October 7	78.9	49.1	94	37
October 8	78.7	49.0	100	34
October 9	78.5	48.8	102	37
October 10	78.2	48.7	95	35
October 11	77.9	48.6	95	34
October 12	77.6	48.4	96	34
October 13	77.4	48.2	95	38
October 14	77.2	48.1	98	35
October 15	76.9	47.9	99	36
October 16	76.6	47.8	100	36
October 17	76.3	47.6	96	36
October 18	76.1	47.4	94	31
October 19	76.0	47.2	96	31
October 20	75.8	47.1	93	32
October 21	75.5	47.0	91	33
October 22	75.2	46.8	92	34
October 23	74.7	46.7	92	34
October 24	74.4	46.6	93	33
October 25	74.0	46.4	95	31
October 26	73.6	46.2	92	27
October 27	73.2	46.0	89	29
October 28	72.7	45.8	89	29
October 29	72.3	45.6	89	32
October 30	71.9	45.3	87	25
October 31	71.6	45.1	88	26

Weather Station Details

Years	Station	Coordinates
1893–2024	Petaluma Airport	location