Klamath Weather in September
Average highs run from 67°F on September 1 to 66°F on September 30, and lows from 50°F to 49°F. Normal precipitation for the month is 1.26 in over about 3 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
- 67°F
- Average low
- 50°F
- Precipitation
- 1.26 in
- Record high
- 95°FSep 28, 2020
- Record low
- 38°FSep 10, 1950
- Chance of a freeze
- 1%
- Daylight
- 13 h 06 min to 11 h 47 min
- Cloud cover
- 27%
- Humidity
- 53%
- Dew point
- 41°F
- Wind
- 4.5 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 | 67°F | 50°F | 70°F 2013 | 42°F 2021 | 8% |
| Sep 2 | 67°F | 50°F | 83°F 2017 | 42°F 2021 | 8% |
| Sep 3 | 67°F | 50°F | 75°F 2017 | 44°F 2012 | 8% |
| Sep 4 | 67°F | 50°F | 72°F 2017 | 43°F 2008 | 9% |
| Sep 5 | 67°F | 50°F | 73°F 2017 | 40°F 1950 | 9% |
| Sep 6 | 67°F | 50°F | 70°F 2020 | 43°F 1950 | 9% |
| Sep 7 | 67°F | 50°F | 73°F 2020 | 44°F 1951 | 9% |
| Sep 8 | 67°F | 50°F | 87°F 2020 | 42°F 1952 | 9% |
| Sep 9 | 67°F | 50°F | 72°F 2016 | 44°F 1951 | 9% |
| Sep 10 | 67°F | 50°F | 68°F 2022 | 38°F 1950 | 9% |
| Sep 11 | 67°F | 50°F | 72°F 1951 | 42°F 1952 | 10% |
| Sep 12 | 67°F | 50°F | 80°F 1951 | 43°F 2016 | 10% |
| Sep 13 | 67°F | 50°F | 73°F 2000 | 46°F 2010 | 10% |
| Sep 14 | 67°F | 50°F | 78°F 1952 | 43°F 2018 | 10% |
| Sep 15 | 67°F | 50°F | 73°F 2020 | 44°F 1950 | 11% |
| Sep 16 | 67°F | 50°F | 72°F 2020 | 42°F 1950 | 11% |
| Sep 17 | 67°F | 50°F | 69°F 2020 | 44°F 2006 | 11% |
| Sep 18 | 67°F | 50°F | 74°F 2000 | 46°F 2001 | 11% |
| Sep 19 | 67°F | 50°F | 73°F 2025 | 42°F 1950 | 11% |
| Sep 20 | 67°F | 50°F | 78°F 2000 | 42°F 1950 | 11% |
| Sep 21 | 67°F | 50°F | 83°F 2021 | 42°F 2012 | 12% |
| Sep 22 | 67°F | 50°F | 75°F 2003 | 42°F 2012 | 12% |
| Sep 23 | 67°F | 50°F | 79°F 2006 | 42°F 2007 | 12% |
| Sep 24 | 67°F | 50°F | 74°F 2024 | 42°F 2007 | 12% |
| Sep 25 | 66°F | 49°F | 74°F 2016 | 41°F 2007 | 13% |
| Sep 26 | 66°F | 49°F | 72°F 2016 | 42°F 2008 | 13% |
| Sep 27 | 66°F | 49°F | 78°F 2017 | 42°F 2013 | 13% |
| Sep 28 | 66°F | 49°F | 95°F 2020 | 43°F 2001 | 13% |
| Sep 29 | 66°F | 49°F | 77°F 2020 | 41°F 2007 | 14% |
| Sep 30 | 66°F | 49°F | 73°F 2001 | 38°F 1950 | 14% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (PDT).
- September 1
- sunrise 6:43 AM, sunset 7:49 PM
- September 30
- sunrise 7:12 AM, sunset 6:59 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00044577 (Klamath), public domain. Records: NOAA GHCN-Daily, station USW00024286, 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.