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Pasadena September Weather

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

Typical Pasadena September Weather 1991–2020
Average daily high	90.2 °F
Average daily low	63.1 °F
Average monthly precipitation	0.2 inches
Average monthly snow	none
Daily chance of precipitation	2.8%
Daily chance of snow	0%

Pasadena September Weather Records 1893–2024
Highest temperature	115 °F	September 6, 2020
Lowest temperature	41 °F	September 27, 1916
Highest daily low	83 °F	September 4, 2022
Lowest daily high	62 °F	September 29, 1919
Hottest average high temperature	96.0 °F	2020
Coldest average high temperature	76.4 °F	1893
Most daily precipitation	4.9 inches	September 25, 1939
Most monthly precipitation	5.9 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	91.6	64.5	109	49
September 2	91.5	64.4	108	49
September 3	91.4	64.3	109	47
September 4	91.4	64.3	111	43
September 5	91.3	64.2	113	44
September 6	91.2	64.1	115	44
September 7	91.0	64.0	113	45
September 8	90.9	63.9	103	43
September 9	90.8	63.8	106	45
September 10	90.7	63.6	107	45
September 11	90.6	63.5	105	47
September 12	90.5	63.4	109	44
September 13	90.3	63.3	109	45
September 14	90.3	63.2	106	47
September 15	90.2	63.1	105	46
September 16	90.1	63.0	108	45
September 17	90.0	62.9	109	45
September 18	89.8	62.7	105	45
September 19	89.6	62.5	105	44
September 20	89.2	62.3	107	43
September 21	88.9	62.0	107	46
September 22	88.6	61.8	107	48
September 23	88.4	61.6	105	45
September 24	88.4	61.4	106	43
September 25	88.2	61.3	108	44
September 26	88.0	61.1	108	42
September 27	87.8	61.0	111	41
September 28	87.6	60.8	109	42
September 29	87.5	60.6	104	42
September 30	87.3	60.4	106	43

Weather Station Details

Years	Station	Coordinates
1893–2024	Pasadena	location