September weather in Cathlamet, WA
The average temperature in Cathlamet in September is °F (°F–°F). Average precipitation: 3.76 inches.
September is a fall month in Cathlamet, and is cooler than the annual average of 0°F. Expect about 8 days with precipitation. Daylight averages about 12h 19m.
Avg High
°F
Avg Low
°F
Precipitation
3.76 in
Daylight
12h 19m
September records in Cathlamet
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | — | — | 0.92 in (1961) |
| September 2 | — | — | 1.17 in (1980) |
| September 3 | — | — | 1.31 in (1971) |
| September 4 | — | — | 0.93 in (1978) |
| September 5 | — | — | 2.62 in (1959) |
| September 6 | — | — | 1.16 in (1970) |
| September 7 | — | — | 1.73 in (1970) |
| September 8 | — | — | 1.10 in (2003) |
| September 9 | — | — | 0.60 in (1978) |
| September 10 | — | — | 1.51 in (1978) |
| September 11 | — | — | 1.35 in (2004) |
| September 12 | — | — | 0.60 in (1982) |
| September 13 | — | — | 0.92 in (1963) |
| September 14 | — | — | 1.36 in (1976) |
| September 15 | — | — | 2.09 in (1997) |
| September 16 | — | — | 1.75 in (1997) |
| September 17 | — | — | 1.49 in (1997) |
| September 18 | — | — | 1.26 in (1968) |
| September 19 | — | — | 1.15 in (1977) |
| September 20 | — | — | 1.35 in (1980) |
| September 21 | — | — | 1.55 in (1972) |
| September 22 | — | — | 1.50 in (2020) |
| September 23 | — | — | 1.64 in (1992) |
| September 24 | — | — | 1.92 in (1986) |
| September 25 | — | — | 0.83 in (1971) |
| September 26 | — | — | 1.79 in (2023) |
| September 27 | — | — | 1.00 in (1963) |
| September 28 | — | — | 1.39 in (1971) |
| September 29 | — | — | 1.18 in (1971) |
| September 30 | — | — | 2.50 in (2005) |