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Petaluma January Weather

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

Typical Petaluma January Weather 1991–2020
Average daily high	58.1 °F
Average daily low	39.1 °F
Average monthly precipitation	4.8 inches
Average monthly snow	none
Daily chance of precipitation	38.6%
Daily chance of snow	0%

Petaluma January Weather Records 1893–2024
Highest temperature	85 °F	January 8, 1962
Lowest temperature	18 °F	January 9, 1937
Highest daily low	58 °F	January 22, 2022
Lowest daily high	39 °F	January 8, 1968
Hottest average high temperature	65.8 °F	2014
Coldest average high temperature	50.9 °F	1916
Most daily precipitation	4.1 inches	January 10, 1979
Most monthly precipitation	16.6 inches	1916
Most daily snow	1.0 inches	January 29, 1916
Most monthly snow	1.5 inches	1916

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	57.1	38.0	74	18
January 2	57.1	38.1	69	19
January 3	57.1	38.1	69	19
January 4	57.2	38.2	69	20
January 5	57.3	38.2	67	22
January 6	57.3	38.2	74	22
January 7	57.3	38.3	75	21
January 8	57.3	38.4	85	19
January 9	57.4	38.5	82	18
January 10	57.4	38.6	73	24
January 11	57.5	38.7	80	23
January 12	57.5	38.8	80	26
January 13	57.6	38.9	70	20
January 14	57.6	39.0	70	21
January 15	57.8	39.0	72	21
January 16	57.9	39.1	77	23
January 17	58.0	39.1	75	21
January 18	58.2	39.2	80	23
January 19	58.3	39.3	78	24
January 20	58.5	39.4	78	21
January 21	58.7	39.5	70	20
January 22	58.8	39.5	72	20
January 23	59.0	39.6	79	21
January 24	59.2	39.6	74	23
January 25	59.4	39.7	76	23
January 26	59.5	39.7	75	26
January 27	59.7	39.6	70	25
January 28	59.9	39.7	70	25
January 29	60.0	39.7	69	21
January 30	60.2	39.8	71	22
January 31	60.4	39.8	76	22

Weather Station Details

Years	Station	Coordinates
1893–2024	Petaluma Airport	location