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San Jacinto August Weather

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

Typical San Jacinto August Weather 1991–2020
Average daily high	98.1 °F
Average daily low	63.8 °F
Average monthly precipitation	0.1 inches
Average monthly snow	none
Daily chance of precipitation	2.0%
Daily chance of snow	0%

San Jacinto August Weather Records 1893–2024
Highest temperature	116 °F	August 1, 1938
Lowest temperature	37 °F	August 27, 1954
Highest daily low	82 °F	August 5, 2018
Lowest daily high	71 °F	August 10, 1941
Hottest average high temperature	105.3 °F	1969
Coldest average high temperature	82.8 °F	1904
Most daily precipitation	1.5 inches	August 26, 1982
Most monthly precipitation	2.7 inches	1945
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	97.9	63.5	116	48
August 2	98.0	63.6	108	47
August 3	98.0	63.6	112	46
August 4	98.1	63.6	113	43
August 5	98.1	63.6	113	45
August 6	98.1	63.6	110	41
August 7	98.2	63.5	111	45
August 8	98.1	63.5	112	41
August 9	98.1	63.4	112	42
August 10	98.1	63.4	110	44
August 11	98.1	63.4	112	44
August 12	98.1	63.4	114	42
August 13	98.2	63.5	113	40
August 14	98.3	63.5	112	42
August 15	98.3	63.5	110	44
August 16	98.3	63.4	109	44
August 17	98.3	63.3	112	44
August 18	98.3	63.3	112	45
August 19	98.3	63.2	114	43
August 20	98.3	63.2	109	42
August 21	98.3	63.3	109	44
August 22	98.2	63.3	110	44
August 23	98.2	63.4	111	46
August 24	98.1	63.3	114	44
August 25	98.1	63.3	115	45
August 26	97.9	63.2	110	45
August 27	97.7	63.1	109	37
August 28	97.5	62.9	112	44
August 29	97.3	62.8	114	39
August 30	97.2	62.6	112	40
August 31	96.9	62.5	110	45

Weather Station Details

Years	Station	Coordinates
1978–2024	San Jacinto	location
1893–1978	San Jacinto	location