Oakley Weather in September
Average highs run from 89°F on September 1 to 83°F on September 30, and lows from 60°F to 57°F. Normal precipitation for the month is 0.06 in over about 0 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
- 87°F
- Average low
- 59°F
- Precipitation
- 0.06 in
- Record high
- 112°FSep 6, 2022
- Record low
- 40°FSep 13, 1968
- Chance of a freeze
- 0%
- Days of 90°F or more
- 10.8
- Daylight
- 12 h 59 min to 11 h 49 min
- Cloud cover
- 18%
- Humidity
- 48%
- Dew point
- 46°F
- Wind
- 7.2 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation.
| Date | Normal high | Normal low | Record high | Record low | Chance wet |
|---|---|---|---|---|---|
| Sep 1 | 89°F | 60°F | 106°F 1955 | 52°F 1973 | 1% |
| Sep 2 | 89°F | 60°F | 107°F 1955 | 52°F 1964 | 1% |
| Sep 3 | 89°F | 60°F | 109°F 1955 | 50°F 1964 | 1% |
| Sep 4 | 89°F | 60°F | 105°F 1955 | 52°F 1956 | 1% |
| Sep 5 | 89°F | 60°F | 111°F 2022 | 48°F 1996 | 1% |
| Sep 6 | 89°F | 60°F | 112°F 2022 | 50°F 1965 | 1% |
| Sep 7 | 88°F | 60°F | 112°F 2022 | 47°F 1996 | 1% |
| Sep 8 | 88°F | 59°F | 111°F 2022 | 50°F 1966 | 1% |
| Sep 9 | 88°F | 59°F | 112°F 2022 | 50°F 1985 | 1% |
| Sep 10 | 88°F | 59°F | 106°F 2022 | 47°F 1968 | 1% |
| Sep 11 | 88°F | 59°F | 109°F 1983 | 44°F 1968 | 1% |
| Sep 12 | 88°F | 59°F | 104°F 1979 | 45°F 1968 | 1% |
| Sep 13 | 88°F | 59°F | 106°F 1971 | 40°F 1968 | 1% |
| Sep 14 | 87°F | 59°F | 106°F 1979 | 41°F 1968 | 1% |
| Sep 15 | 87°F | 59°F | 104°F 1971 | 41°F 1968 | 1% |
| Sep 16 | 87°F | 59°F | 104°F 1971 | 40°F 1992 | 1% |
| Sep 17 | 87°F | 59°F | 98°F 1971 | 47°F 1995 | 1% |
| Sep 18 | 87°F | 59°F | 99°F 1984 | 41°F 1968 | 1% |
| Sep 19 | 86°F | 59°F | 102°F 1958 | 46°F 1968 | 2% |
| Sep 20 | 86°F | 58°F | 101°F 2000 | 40°F 1968 | 2% |
| Sep 21 | 86°F | 58°F | 100°F 1990 | 42°F 1968 | 2% |
| Sep 22 | 86°F | 58°F | 99°F 2009 | 49°F 1978 | 2% |
| Sep 23 | 85°F | 58°F | 100°F 2009 | 47°F 1960 | 2% |
| Sep 24 | 85°F | 58°F | 101°F 2024 | 44°F 1982 | 2% |
| Sep 25 | 85°F | 58°F | 101°F 2024 | 45°F 1972 | 2% |
| Sep 26 | 85°F | 58°F | 100°F 2009 | 48°F 1965 | 2% |
| Sep 27 | 84°F | 58°F | 99°F 1963 | 50°F 1970 | 2% |
| Sep 28 | 84°F | 57°F | 99°F 2010 | 44°F 1996 | 2% |
| Sep 29 | 84°F | 57°F | 100°F 1966 | 45°F 1995 | 2% |
| Sep 30 | 83°F | 57°F | 101°F 2010 | 45°F 1965 | 2% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (PDT).
- September 1
- sunrise 6:37 AM, sunset 7:36 PM
- September 30
- sunrise 7:02 AM, sunset 6:51 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00040232 (Antioch Pumping Plt #3), public domain. Records: NOAA GHCN-Daily, station USC00049001, 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.