Winters Weather in September
Average highs run from 93°F on September 1 to 87°F on September 30, and lows from 58°F to 54°F. Normal precipitation for the month is 0.09 in over about 1 wet days.
September day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
September at a glance
- Average high
- 91°F
- Average low
- 57°F
- Precipitation
- 0.09 in
- Record high
- 116°FSep 7, 2022
- Record low
- 35°FSep 13, 1910
- Chance of a freeze
- 0%
- Days of 90°F or more
- 19.7
- Daylight
- 13 h 01 min to 11 h 49 min
- Cloud cover
- 18%
- Humidity
- 45%
- Dew point
- 44°F
- Wind
- 7.4 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| Sep 1 | 93°F | 58°F | 107°F 2025 | 40°F 1911 | 1% | 0% |
| Sep 2 | 93°F | 58°F | 112°F 1950 | 37°F 1911 | 1% | 0% |
| Sep 3 | 93°F | 58°F | 111°F 1950 | 40°F 1910 | 1% | 0% |
| Sep 4 | 93°F | 58°F | 110°F 1950 | 39°F 1910 | 2% | 0% |
| Sep 5 | 93°F | 58°F | 108°F 1950 | 42°F 1911 | 2% | 0% |
| Sep 6 | 93°F | 58°F | 115°F 2022 | 44°F 1911 | 2% | 0% |
| Sep 7 | 93°F | 58°F | 116°F 2022 | 41°F 1910 | 2% | 0% |
| Sep 8 | 93°F | 58°F | 111°F 2022 | 42°F 1947 | 2% | 0% |
| Sep 9 | 92°F | 58°F | 114°F 2022 | 41°F 1931 | 2% | 0% |
| Sep 10 | 92°F | 58°F | 111°F 1944 | 40°F 1928 | 2% | 0% |
| Sep 11 | 92°F | 57°F | 108°F 1922 | 41°F 1931 | 2% | 0% |
| Sep 12 | 92°F | 57°F | 105°F 1922 | 44°F 1931 | 2% | 0% |
| Sep 13 | 92°F | 57°F | 106°F 1929 | 35°F 1910 | 2% | 0% |
| Sep 14 | 92°F | 57°F | 109°F 1929 | 35°F 1910 | 2% | 0% |
| Sep 15 | 91°F | 57°F | 107°F 1929 | 40°F 1921 | 3% | 0% |
| Sep 16 | 91°F | 57°F | 107°F 1913 | 43°F 1911 | 3% | 0% |
| Sep 17 | 91°F | 57°F | 107°F 1913 | 40°F 1909 | 3% | 0% |
| Sep 18 | 91°F | 57°F | 105°F 1913 | 39°F 1916 | 3% | 0% |
| Sep 19 | 91°F | 56°F | 104°F 1913 | 36°F 1926 | 3% | 0% |
| Sep 20 | 90°F | 56°F | 104°F 1919 | 40°F 1965 | 3% | 0% |
| Sep 21 | 90°F | 56°F | 104°F 2000 | 38°F 1924 | 4% | 0% |
| Sep 22 | 90°F | 56°F | 104°F 1943 | 37°F 1926 | 4% | 0% |
| Sep 23 | 89°F | 56°F | 106°F 1949 | 40°F 1929 | 4% | 0% |
| Sep 24 | 89°F | 56°F | 107°F 2025 | 39°F 1912 | 4% | 0% |
| Sep 25 | 89°F | 55°F | 104°F 2024 | 38°F 1934 | 4% | 0% |
| Sep 26 | 89°F | 55°F | 101°F 1944 | 40°F 1910 | 5% | 0% |
| Sep 27 | 88°F | 55°F | 104°F 1921 | 37°F 1929 | 5% | 0% |
| Sep 28 | 88°F | 55°F | 102°F 1921 | 37°F 1929 | 5% | 0% |
| Sep 29 | 88°F | 55°F | 102°F 2010 | 37°F 1925 | 5% | 0% |
| Sep 30 | 87°F | 54°F | 103°F 1966 | 36°F 1929 | 5% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (PDT).
- September 1
- sunrise 6:37 AM, sunset 7:38 PM
- September 30
- sunrise 7:03 AM, sunset 6:52 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00049742 (Winters), public domain. Records: NOAA GHCN-Daily, station USC00042294, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.