Dunsmuir Weather in September
Average highs run from 87°F on September 1 to 79°F on September 30, and lows from 49°F to 43°F. Normal precipitation for the month is 0.68 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
- 84°F
- Average low
- 46°F
- Precipitation
- 0.68 in
- Record high
- 103°FSep 2, 1955
- Record low
- 25°FSep 17, 1965
- Chance of a freeze
- 3%
- Days of 90°F or more
- 10.5
- Daylight
- 13 h 05 min to 11 h 47 min
- Cloud cover
- 26%
- Humidity
- 37%
- Dew point
- 33°F
- Wind
- 4.0 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 | 87°F | 49°F | 101°F 1950 | 34°F 1999 | 5% | 0% |
| Sep 2 | 87°F | 49°F | 103°F 1955 | 31°F 1964 | 5% | 0% |
| Sep 3 | 87°F | 49°F | 100°F 1955 | 34°F 2020 | 6% | 0% |
| Sep 4 | 86°F | 48°F | 101°F 1955 | 35°F 2020 | 6% | 0% |
| Sep 5 | 86°F | 48°F | 97°F 1955 | 38°F 1954 | 6% | 0% |
| Sep 6 | 86°F | 48°F | 95°F 2020 | 32°F 1996 | 6% | 0% |
| Sep 7 | 86°F | 48°F | 93°F 1981 | 32°F 2002 | 6% | 0% |
| Sep 8 | 86°F | 48°F | 92°F 2008 | 34°F 1978 | 6% | 0% |
| Sep 9 | 86°F | 48°F | 96°F 2020 | 35°F 1964 | 7% | 0% |
| Sep 10 | 85°F | 47°F | 95°F 1953 | 33°F 1986 | 7% | 0% |
| Sep 11 | 85°F | 47°F | 97°F 2009 | 30°F 1985 | 7% | 0% |
| Sep 12 | 85°F | 47°F | 96°F 2020 | 30°F 1972 | 7% | 0% |
| Sep 13 | 85°F | 47°F | 94°F 1953 | 32°F 1994 | 7% | 0% |
| Sep 14 | 84°F | 47°F | 96°F 2020 | 28°F 1970 | 8% | 0% |
| Sep 15 | 84°F | 46°F | 96°F 1981 | 31°F 1955 | 8% | 0% |
| Sep 16 | 84°F | 46°F | 95°F 2020 | 31°F 2006 | 8% | 0% |
| Sep 17 | 84°F | 46°F | 95°F 2020 | 25°F 1965 | 8% | 0% |
| Sep 18 | 83°F | 46°F | 96°F 2020 | 29°F 1965 | 9% | 0% |
| Sep 19 | 83°F | 46°F | 93°F 1951 | 26°F 1965 | 9% | 0% |
| Sep 20 | 83°F | 45°F | 93°F 1952 | 31°F 1972 | 9% | 0% |
| Sep 21 | 82°F | 45°F | 94°F 1974 | 29°F 1993 | 9% | 0% |
| Sep 22 | 82°F | 45°F | 93°F 1949 | 32°F 1986 | 9% | 0% |
| Sep 23 | 82°F | 45°F | 96°F 2009 | 29°F 2000 | 10% | 0% |
| Sep 24 | 81°F | 45°F | 95°F 2009 | 28°F 1958 | 10% | 0% |
| Sep 25 | 81°F | 44°F | 93°F 2009 | 29°F 2005 | 10% | 0% |
| Sep 26 | 80°F | 44°F | 95°F 2009 | 30°F 1948 | 10% | 0% |
| Sep 27 | 80°F | 44°F | 95°F 2009 | 27°F 1986 | 11% | 0% |
| Sep 28 | 80°F | 44°F | 90°F 1967 | 30°F 1999 | 11% | 0% |
| Sep 29 | 79°F | 43°F | 90°F 2008 | 28°F 2007 | 11% | 0% |
| Sep 30 | 79°F | 43°F | 87°F 1975 | 26°F 1950 | 12% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (PDT).
- September 1
- sunrise 6:36 AM, sunset 7:41 PM
- September 30
- sunrise 7:05 AM, sunset 6:52 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00042574 (Dunsmuir Trtmt Pl), public domain. Records: NOAA GHCN-Daily, station USC00045983, 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.