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Chula Vista September Weather

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

Typical Chula Vista September Weather 1991–2020
Average daily high	78.7 °F
Average daily low	64.5 °F
Average monthly precipitation	0.1 inches
Average monthly snow	none
Daily chance of precipitation	1.8%
Daily chance of snow	0%

Chula Vista September Weather Records 1918–2024
Highest temperature	108 °F	September 4, 1988
Lowest temperature	43 °F	September 7, 1999
Highest daily low	78 °F	September 4, 2022
Lowest daily high	63 °F	September 23, 1933
Hottest average high temperature	84.1 °F	2015
Coldest average high temperature	66.0 °F	1933
Most daily precipitation	1.2 inches	September 25, 1997
Most monthly precipitation	2.9 inches	1939
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	78.6	65.4	92	45
September 2	78.6	65.4	92	53
September 3	78.6	65.2	96	43
September 4	78.6	65.1	108	43
September 5	78.6	65.0	103	53
September 6	78.5	65.0	102	45
September 7	78.5	64.9	91	43
September 8	78.5	64.8	105	44
September 9	78.5	64.7	99	52
September 10	78.6	64.6	94	46
September 11	78.5	64.4	94	53
September 12	78.5	64.3	90	46
September 13	78.5	64.3	86	51
September 14	78.5	64.1	93	51
September 15	78.6	64.0	100	52
September 16	78.7	63.9	95	53
September 17	78.7	63.8	91	47
September 18	78.7	63.6	93	49
September 19	78.6	63.5	94	47
September 20	78.4	63.4	97	50
September 21	78.2	63.2	105	49
September 22	78.0	62.9	99	50
September 23	77.9	62.8	93	49
September 24	77.9	62.5	101	49
September 25	77.8	62.4	100	50
September 26	77.8	62.2	101	49
September 27	77.8	62.0	108	47
September 28	77.8	61.9	98	50
September 29	77.7	61.7	96	49
September 30	77.6	61.5	96	47

Weather Station Details

Years	Station	Coordinates
1918–2024	Chula Vista	location