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El Cajon August Weather

Averages and records for weather in El Cajon, California in the month of August.

Typical El Cajon August Weather 1991–2020
Average daily high	89.1 °F
Average daily low	65.1 °F
Average monthly precipitation	0.0 inches
Daily chance of precipitation	1.2%

El Cajon August Weather Records 1899–2024
Highest temperature	111 °F	August 31, 1955
Lowest temperature	44 °F	August 3, 1944
Highest daily low	80 °F	August 15, 1904
Lowest daily high	69 °F	August 30, 1951
Hottest average high temperature	93.9 °F	1929
Coldest average high temperature	82.5 °F	1900
Most daily precipitation	1.4 inches	August 19, 1945
Most monthly precipitation	1.9 inches	1951

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	88.1	64.4	104	49
August 2	88.2	64.5	105	50
August 3	88.4	64.6	107	44
August 4	88.5	64.6	101	47
August 5	88.5	64.7	101	47
August 6	88.4	64.7	104	49
August 7	88.4	64.7	103	48
August 8	88.4	64.7	101	47
August 9	88.5	64.7	102	48
August 10	88.6	64.7	103	49
August 11	88.7	64.8	103	49
August 12	88.9	64.8	101	48
August 13	89.0	64.8	107	50
August 14	89.2	64.9	105	47
August 15	89.2	64.9	103	48
August 16	89.3	64.9	104	47
August 17	89.3	64.8	102	45
August 18	89.4	64.9	102	49
August 19	89.4	64.9	101	49
August 20	89.5	64.9	100	49
August 21	89.6	65.0	101	49
August 22	89.7	65.0	102	46
August 23	89.8	65.1	105	47
August 24	89.8	65.1	103	45
August 25	89.9	65.2	105	47
August 26	89.8	65.1	105	48
August 27	89.7	65.0	106	44
August 28	89.6	65.0	107	45
August 29	89.6	64.9	108	49
August 30	89.5	64.8	105	45
August 31	89.5	64.7	111	45

Weather Station Details

Years	Station	Coordinates
1979–2024	El Cajon	location
1899–1979	El Cajon 2 E	location