September weather in College Place, WA
The average temperature in College Place in September is 61.9°F (43.7°F–80.2°F). Average precipitation: 0.68 inches.
September is a fall month in College Place, and is warmer than the annual average of 51.7°F. Daily temperatures swing about 36.5°F between overnight low and afternoon high. Daylight averages about 12h 18m. For travel, September is a comfortable month to visit.
Avg High
80.2°F
Avg Low
43.7°F
Precipitation
0.68 in
Daylight
12h 18m
September records in College Place
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 102.9°F (1987) | 35.1°F (1999) | 0.65 in (1971) |
| September 2 | 99.0°F (1987) | 34.0°F (1999) | 0.32 in (2000) |
| September 3 | 102.0°F (1998) | 35.1°F (1975) | 0.15 in (2000) |
| September 4 | 99.0°F (1998) | 34.0°F (1980) | 0.82 in (1997) |
| September 5 | 98.1°F (1998) | 36.0°F (1969) | 0.12 in (1971) |
| September 6 | 100.0°F (1966) | 34.0°F (1965) | 0.59 in (1978) |
| September 7 | 99.0°F (2003) | 33.1°F (1992) | 0.55 in (1995) |
| September 8 | 95.0°F (2020) | 28.9°F (1976) | 0.61 in (2003) |
| September 9 | 98.1°F (1981) | 30.9°F (1976) | 1.00 in (2019) |
| September 10 | 99.0°F (1963) | 34.0°F (1964) | 0.47 in (1982) |
| September 11 | 98.1°F (1990) | 32.0°F (1964) | 0.39 in (2000) |
| September 12 | 95.0°F (1963) | 30.9°F (2012) | 0.33 in (2024) |
| September 13 | 96.1°F (2011) | 28.9°F (1970) | 0.79 in (1980) |
| September 14 | 95.0°F (2013) | 28.9°F (1970) | 0.27 in (1968) |
| September 15 | 93.9°F (2013) | 27.0°F (1970) | 0.32 in (1996) |
| September 16 | 99.0°F (2013) | 28.9°F (1982) | 0.18 in (1963) |
| September 17 | 95.0°F (1998) | 24.1°F (1965) | 0.30 in (1985) |
| September 18 | 93.0°F (1981) | 28.0°F (1965) | 0.39 in (2013) |
| September 19 | 95.0°F (1981) | 28.9°F (1983) | 0.30 in (2010) |
| September 20 | 91.0°F (2012) | 24.1°F (1983) | 0.60 in (2010) |
| September 21 | 91.9°F (1967) | 25.0°F (1983) | 0.49 in (2023) |
| September 22 | 95.0°F (1967) | 27.0°F (1993) | 0.13 in (1968) |
| September 23 | 91.0°F (1999) | 26.1°F (2000) | 0.21 in (1973) |
| September 24 | 93.0°F (2011) | 27.0°F (2000) | 0.73 in (1992) |
| September 25 | 93.9°F (2001) | 26.1°F (1970) | 0.09 in (1992) |
| September 26 | 93.0°F (1994) | 28.0°F (2000) | 0.48 in (1982) |
| September 27 | 89.1°F (1994) | 28.0°F (2000) | 0.75 in (1981) |
| September 28 | 89.1°F (1991) | 21.0°F (1985) | 0.40 in (2013) |
| September 29 | 93.0°F (1967) | 18.0°F (1983) | 0.33 in (1977) |
| September 30 | 89.1°F (1963) | 21.0°F (1985) | 0.36 in (1986) |