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Ukiah September Weather

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

Typical Ukiah September Weather 1991–2020
Average daily high	88.1 °F
Average daily low	51.0 °F
Average monthly precipitation	0.2 inches
Daily chance of precipitation	3.8%

Ukiah September Weather Records 1893–2024
Highest temperature	117 °F	September 6, 2022
Lowest temperature	30 °F	September 30, 1926
Highest daily low	71 °F	September 18, 1984
Lowest daily high	58 °F	September 26, 1923
Hottest average high temperature	96.6 °F	1932
Coldest average high temperature	75.1 °F	1893
Most daily precipitation	2.3 inches	September 27, 1957
Most monthly precipitation	3.5 inches	1957

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	90.2	53.2	112	41
September 2	89.9	53.0	114	39
September 3	89.6	52.9	115	40
September 4	89.5	52.8	113	37
September 5	89.4	52.6	112	38
September 6	89.4	52.5	117	38
September 7	89.2	52.3	111	38
September 8	89.1	52.1	110	34
September 9	89.0	52.0	110	38
September 10	88.9	51.9	108	37
September 11	88.7	51.8	106	39
September 12	88.6	51.6	108	38
September 13	88.5	51.4	110	35
September 14	88.4	51.3	110	35
September 15	88.2	51.1	109	35
September 16	87.9	51.0	106	35
September 17	87.5	50.9	104	37
September 18	87.2	50.7	104	30
September 19	86.9	50.5	105	34
September 20	86.5	50.4	106	33
September 21	86.1	50.2	106	33
September 22	85.8	50.0	108	34
September 23	85.6	49.8	108	33
September 24	85.4	49.6	106	36
September 25	85.1	49.4	104	33
September 26	84.7	49.2	109	34
September 27	84.4	49.0	107	32
September 28	84.1	48.7	103	34
September 29	84.0	48.5	106	32
September 30	83.9	48.3	102	30

Weather Station Details

Years	Station	Coordinates
2001–2024	Ukiah Municipal Airport	location
1893–2000	Ukiah	location