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Santa Cantalina Island September Weather

Averages and records for weather in Santa Cantalina Island, California in the month of September.

Typical Santa Cantalina Island September Weather 1991–2020
Average daily high	78.2 °F
Average daily low	62.6 °F
Average monthly precipitation	0.1 inches
Daily chance of precipitation	6.8%

Santa Cantalina Island September Weather Records 1948–2024
Highest temperature	110 °F	September 6, 2020
Lowest temperature	48 °F	September 25, 1948
Highest daily low	91 °F	September 6, 2020
Lowest daily high	59 °F	September 10, 2005
Hottest average high temperature	84.4 °F	2020
Coldest average high temperature	70.8 °F	1965
Most daily precipitation	1.2 inches	September 17, 1963
Most monthly precipitation	2.3 inches	1963

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	79.1	63.3	105	54
September 2	79.0	63.2	101	52
September 3	79.0	63.2	98	53
September 4	79.0	63.3	100	54
September 5	79.1	63.2	102	53
September 6	79.0	63.2	110	50
September 7	79.0	63.1	98	50
September 8	79.0	63.1	96	54
September 9	78.9	63.0	93	52
September 10	78.8	63.0	97	51
September 11	78.7	62.8	102	51
September 12	78.6	62.8	98	53
September 13	78.5	62.6	94	53
September 14	78.3	62.6	98	53
September 15	78.2	62.5	98	51
September 16	78.1	62.5	96	54
September 17	78.0	62.4	92	53
September 18	77.8	62.3	93	53
September 19	77.4	62.1	96	52
September 20	77.0	61.8	94	52
September 21	76.6	61.5	97	51
September 22	76.4	61.4	98	51
September 23	76.4	61.4	99	52
September 24	76.3	61.4	96	52
September 25	76.2	61.3	100	48
September 26	75.9	61.0	101	52
September 27	75.6	60.8	104	53
September 28	75.4	60.6	100	53
September 29	75.3	60.5	97	54
September 30	75.2	60.3	101	52

Weather Station Details

Years	Station	Coordinates
1948–2024	Avalon Catalina Airport	location