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Newport Beach September Weather

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

Typical Newport Beach September Weather 1991–2020
Average daily high	73.1 °F
Average daily low	64.2 °F
Average monthly precipitation	0.1 inches
Average monthly snow	none
Daily chance of precipitation	1.8%
Daily chance of snow	0%

Newport Beach September Weather Records 1921–2024
Highest temperature	107 °F	September 26, 1963
Lowest temperature	45 °F	September 9, 1929
Highest daily low	78 °F	September 3, 1998
Lowest daily high	64 °F	September 17, 1991
Hottest average high temperature	81.8 °F	1984
Coldest average high temperature	67.7 °F	1933
Most daily precipitation	2.8 inches	September 25, 1939
Most monthly precipitation	3.1 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	73.5	65.3	99	56
September 2	73.5	65.2	87	53
September 3	73.5	65.1	92	52
September 4	73.5	65.1	97	50
September 5	73.5	65.0	91	48
September 6	73.4	65.0	91	52
September 7	73.4	64.9	85	48
September 8	73.4	64.8	95	47
September 9	73.4	64.7	95	45
September 10	73.4	64.6	89	51
September 11	73.3	64.6	92	51
September 12	73.3	64.5	89	49
September 13	73.2	64.5	85	52
September 14	73.2	64.4	84	47
September 15	73.1	64.3	90	50
September 16	73.1	64.2	92	53
September 17	73.1	64.1	93	52
September 18	73.0	64.0	89	49
September 19	72.9	63.9	95	50
September 20	72.8	63.7	93	49
September 21	72.7	63.6	100	50
September 22	72.6	63.4	97	52
September 23	72.6	63.3	93	50
September 24	72.6	63.2	91	50
September 25	72.5	63.1	98	50
September 26	72.5	63.0	107	50
September 27	72.4	62.8	92	50
September 28	72.4	62.7	88	49
September 29	72.4	62.6	88	52
September 30	72.3	62.5	94	51

Weather Station Details

Years	Station	Coordinates
1921–2024	Newport Beach Harbor	location