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Watsonville September Weather

Averages and records for weather in Watsonville, California in the month of September.

Typical Watsonville September Weather 1991–2020
Average daily high	75.0 °F
Average daily low	52.6 °F
Average monthly precipitation	0.1 inches
Daily chance of precipitation	5.8%

Watsonville September Weather Records 1908–2024
Highest temperature	110 °F	September 6, 2020
Lowest temperature	32 °F	September 27, 1915
Highest daily low	74 °F	September 7, 1998
Lowest daily high	56 °F	September 2, 1998
Hottest average high temperature	84.4 °F	1984
Coldest average high temperature	63.4 °F	1908
Most daily precipitation	5.9 inches	September 19, 1959
Most monthly precipitation	6.1 inches	1959

Note: Daily averages are a moving average which includes 14 days before and after

Day	Average (°F)		Record (°F)
Day	High	Low	High	Low
September 1	73.9	53.8	107	40
September 2	73.9	53.7	110	41
September 3	74.1	53.6	95	39
September 4	74.2	53.5	96	35
September 5	74.4	53.4	102	37
September 6	74.4	53.3	110	37
September 7	74.4	53.2	96	37
September 8	74.4	53.1	100	35
September 9	74.5	53.0	98	35
September 10	74.7	53.0	96	39
September 11	74.7	52.9	97	37
September 12	74.8	52.9	104	38
September 13	74.8	52.8	103	34
September 14	74.9	52.7	100	40
September 15	74.8	52.6	105	39
September 16	74.8	52.6	105	37
September 17	74.8	52.5	104	35
September 18	74.8	52.4	102	37
September 19	74.7	52.3	97	37
September 20	74.6	52.2	99	35
September 21	74.5	52.1	97	33
September 22	74.5	51.9	95	33
September 23	74.6	51.8	102	37
September 24	74.7	51.6	99	35
September 25	74.8	51.5	101	38
September 26	74.7	51.4	101	35
September 27	74.7	51.3	102	32
September 28	74.7	51.1	101	35
September 29	74.9	50.9	98	34
September 30	75.0	50.8	102	33

Weather Station Details

Years	Station	Coordinates
1998–2024	Watsonville Municipal Airport	location
1908–1998	Watsonville Water Works	location