September weather in Willamina, OR
The average temperature in Willamina in September is °F (°F–°F). Average precipitation: 1.49 inches.
September is a fall month in Willamina, and is cooler than the annual average of 0°F. Expect about 7 days with precipitation. Daylight averages about 12h 18m.
Avg High
°F
Avg Low
°F
Precipitation
1.49 in
Daylight
12h 18m
September records in Willamina
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | — | — | 1.15 in (1971) |
| September 2 | — | — | 0.89 in (1971) |
| September 3 | — | — | 1.14 in (1979) |
| September 4 | — | — | 1.77 in (1945) |
| September 5 | — | — | 0.39 in (1945) |
| September 6 | — | — | 1.36 in (2013) |
| September 7 | — | — | 0.59 in (1947) |
| September 8 | — | — | 0.33 in (1952) |
| September 9 | — | — | 1.22 in (1978) |
| September 10 | — | — | 0.63 in (1978) |
| September 11 | — | — | 0.48 in (1985) |
| September 12 | — | — | 0.41 in (1941) |
| September 13 | — | — | 0.63 in (1936) |
| September 14 | — | — | 0.81 in (2025) |
| September 15 | — | — | 1.62 in (1996) |
| September 16 | — | — | 1.16 in (1955) |
| September 17 | — | — | 0.79 in (1997) |
| September 18 | — | — | 1.15 in (2021) |
| September 19 | — | — | 1.13 in (1977) |
| September 20 | — | — | 0.92 in (1973) |
| September 21 | — | — | 1.24 in (1972) |
| September 22 | — | — | 0.67 in (1973) |
| September 23 | — | — | 0.61 in (1948) |
| September 24 | — | — | 0.80 in (2020) |
| September 25 | — | — | 0.63 in (2010) |
| September 26 | — | — | 1.23 in (1950) |
| September 27 | — | — | 0.89 in (1995) |
| September 28 | — | — | 1.04 in (2013) |
| September 29 | — | — | 1.50 in (2013) |
| September 30 | — | — | 1.90 in (2013) |