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Hollister September Weather

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

Typical Hollister September Weather 1991–2020
Average daily high	81.7 °F
Average daily low	53.0 °F
Average monthly precipitation	0.1 inches
Average monthly snow	none
Daily chance of precipitation	1.5%
Daily chance of snow	0%

Hollister September Weather Records 1895–2024
Highest temperature	111 °F	September 6, 2020
Lowest temperature	31 °F	September 16, 1970
Highest daily low	70 °F	September 7, 2020
Lowest daily high	59 °F	September 30, 1930
Hottest average high temperature	89.3 °F	1984
Coldest average high temperature	71.6 °F	1918
Most daily precipitation	3.0 inches	September 13, 1918
Most monthly precipitation	4.5 inches	1918
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
September 1	81.6	54.0	108	40
September 2	81.6	53.9	110	39
September 3	81.6	53.9	104	39
September 4	81.7	53.7	103	41
September 5	81.8	53.7	104	38
September 6	81.7	53.6	111	40
September 7	81.7	53.6	111	40
September 8	81.8	53.5	109	38
September 9	81.9	53.4	108	40
September 10	82.0	53.4	101	38
September 11	81.9	53.3	105	36
September 12	81.8	53.3	106	39
September 13	81.8	53.2	110	38
September 14	81.7	53.2	111	36
September 15	81.6	53.1	103	32
September 16	81.5	53.0	104	31
September 17	81.3	52.9	103	38
September 18	81.3	52.7	104	39
September 19	81.1	52.6	101	40
September 20	80.8	52.5	104	32
September 21	80.6	52.3	106	34
September 22	80.4	52.1	106	35
September 23	80.5	52.0	105	36
September 24	80.6	51.9	103	39
September 25	80.5	51.8	101	35
September 26	80.4	51.6	103	38
September 27	80.2	51.5	104	38
September 28	80.2	51.3	105	40
September 29	80.3	51.1	98	39
September 30	80.3	51.0	102	39

Weather Station Details

Years	Station	Coordinates
1975–2024	Hollister 2	location
1895–1975	Hollister 1 SW	location