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Imperial September Weather

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

Typical Imperial September Weather 1991–2020
Average daily high	101.8 °F
Average daily low	72.4 °F
Average monthly precipitation	0.3 inches
Average monthly snow	none
Daily chance of precipitation	3.7%
Daily chance of snow	0%

Imperial September Weather Records 1901–2024
Highest temperature	120 °F	September 6, 2020
Lowest temperature	49 °F	September 30, 1905
Highest daily low	89 °F	September 6, 2017
Lowest daily high	70 °F	September 21, 2007
Hottest average high temperature	107.8 °F	2020
Coldest average high temperature	93.7 °F	1976
Most daily precipitation	4.1 inches	September 6, 1939
Most monthly precipitation	7.1 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	104.8	76.2	118	62
September 2	104.6	76.0	117	59
September 3	104.4	75.7	118	63
September 4	104.3	75.5	116	62
September 5	104.1	75.3	120	60
September 6	103.9	75.1	120	61
September 7	103.6	74.8	114	58
September 8	103.4	74.6	114	60
September 9	103.1	74.3	114	60
September 10	102.9	74.0	112	54
September 11	102.7	73.7	113	57
September 12	102.5	73.4	115	57
September 13	102.3	73.1	111	57
September 14	102.1	72.8	112	55
September 15	101.9	72.6	113	55
September 16	101.6	72.3	113	59
September 17	101.4	72.0	112	58
September 18	101.1	71.7	112	57
September 19	100.9	71.4	112	57
September 20	100.5	71.1	110	56
September 21	100.1	70.6	111	58
September 22	99.7	70.1	112	54
September 23	99.3	69.6	110	53
September 24	99.0	69.2	110	54
September 25	98.8	68.8	111	54
September 26	98.5	68.5	111	53
September 27	98.0	68.1	111	53
September 28	97.6	67.7	110	52
September 29	97.3	67.3	108	54
September 30	97.0	67.0	110	49

Weather Station Details

Years	Station	Coordinates
1901–2024	Imperial	location