Oak Glen Weather in September
Average highs run from 77°F on September 1 to 69°F on September 30, and lows from 47°F to 40°F. Normal precipitation for the month is 0.40 in over about 2 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
- 73°F
- Average low
- 44°F
- Precipitation
- 0.40 in
- Record high
- 87°FSep 2, 1978
- Record low
- 19°FSep 2, 1964
- Chance of a freeze
- 35%
- Daylight
- 12 h 51 min to 11 h 51 min
- Cloud cover
- 18%
- Humidity
- 36%
- Dew point
- 41°F
- Wind
- 5.6 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 | 77°F | 47°F | 86°F 1978 | 31°F 1963 | 10% | 0% |
| Sep 2 | 77°F | 47°F | 87°F 1978 | 19°F 1964 | 10% | 0% |
| Sep 3 | 76°F | 47°F | 86°F 1978 | 26°F 1964 | 9% | 0% |
| Sep 4 | 76°F | 47°F | 87°F 2020 | 32°F 1962 | 9% | 0% |
| Sep 5 | 76°F | 47°F | 87°F 2020 | 28°F 1961 | 9% | 0% |
| Sep 6 | 76°F | 47°F | 87°F 2020 | 29°F 1961 | 9% | 0% |
| Sep 7 | 76°F | 46°F | 86°F 2021 | 28°F 1965 | 9% | 0% |
| Sep 8 | 75°F | 46°F | 86°F 2021 | 24°F 1965 | 8% | 0% |
| Sep 9 | 75°F | 46°F | 85°F 2021 | 24°F 1965 | 8% | 0% |
| Sep 10 | 75°F | 46°F | 84°F 1993 | 27°F 1961 | 8% | 0% |
| Sep 11 | 75°F | 45°F | 84°F 1971 | 29°F 1965 | 8% | 0% |
| Sep 12 | 74°F | 45°F | 85°F 1971 | 26°F 1965 | 7% | 0% |
| Sep 13 | 74°F | 45°F | 84°F 1971 | 31°F 1972 | 7% | 0% |
| Sep 14 | 74°F | 45°F | 85°F 1971 | 28°F 1964 | 7% | |
| Sep 15 | 73°F | 44°F | 83°F 1971 | 32°F 1963 | 7% | |
| Sep 16 | 73°F | 44°F | 85°F 2000 | 29°F 1964 | 7% | |
| Sep 17 | 73°F | 44°F | 84°F 2000 | 31°F 1961 | 6% | |
| Sep 18 | 73°F | 44°F | 82°F 2000 | 23°F 1961 | 6% | |
| Sep 19 | 72°F | 43°F | 83°F 2000 | 24°F 1961 | 6% | |
| Sep 20 | 72°F | 43°F | 83°F 2000 | 24°F 1965 | 6% | |
| Sep 21 | 72°F | 43°F | 83°F 2000 | 24°F 1986 | 6% | |
| Sep 22 | 71°F | 42°F | 83°F 2003 | 26°F 1968 | 6% | |
| Sep 23 | 71°F | 42°F | 83°F 1982 | 25°F 1961 | 5% | |
| Sep 24 | 71°F | 42°F | 83°F 1982 | 21°F 1986 | 5% | |
| Sep 25 | 70°F | 41°F | 82°F 1960 | 24°F 1961 | 5% | |
| Sep 26 | 70°F | 41°F | 84°F 1960 | 25°F 1961 | 5% | |
| Sep 27 | 70°F | 41°F | 84°F 2003 | 27°F 2013 | 5% | |
| Sep 28 | 69°F | 40°F | 82°F 2010 | 24°F 1971 | 5% | |
| Sep 29 | 69°F | 40°F | 81°F 2009 | 20°F 1964 | 5% | |
| Sep 30 | 69°F | 40°F | 80°F 1980 | 21°F 1964 | 5% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (PDT).
- September 1
- sunrise 6:22 AM, sunset 7:13 PM
- September 30
- sunrise 6:42 AM, sunset 6:33 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00040741 (Big Bear Lake), public domain. Records: NOAA GHCN-Daily, station USC00040741, 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.