September weather in North Bonneville, WA
The average temperature in North Bonneville in September is 63.6°F (53.1°F–74.2°F). Average precipitation: 2.62 inches.
September is a fall month in North Bonneville, and is warmer than the annual average of 52.8°F. Daily temperatures swing about 21.1°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 12h 18m. For travel, September is one of the best months of the year to visit.
Avg High
74.2°F
Avg Low
53.1°F
Precipitation
2.62 in
Daylight
12h 18m
September records in North Bonneville
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 100.0°F (1987) | 42.1°F (1973) | 1.52 in (1961) |
| September 2 | 93.9°F (1988) | 42.1°F (1973) | 1.88 in (1971) |
| September 3 | 98.1°F (1988) | 45.0°F (1980) | 0.92 in (2015) |
| September 4 | 95.0°F (2003) | 46.9°F (2000) | 1.52 in (1945) |
| September 5 | 93.9°F (2024) | 43.0°F (1969) | 1.27 in (1959) |
| September 6 | 100.0°F (1955) | 42.1°F (1969) | 1.36 in (1984) |
| September 7 | 96.1°F (2024) | 45.0°F (2002) | 1.71 in (1984) |
| September 8 | 99.0°F (1999) | 46.0°F (1971) | 0.78 in (2003) |
| September 9 | 98.1°F (1963) | 43.0°F (1989) | 0.95 in (1985) |
| September 10 | 98.1°F (1963) | 41.0°F (1989) | 1.61 in (1982) |
| September 11 | 99.0°F (1944) | 43.0°F (1986) | 1.51 in (1956) |
| September 12 | 100.0°F (1975) | 44.1°F (2012) | 0.69 in (1982) |
| September 13 | 93.0°F (2009) | 43.0°F (1970) | 0.77 in (2018) |
| September 14 | 95.0°F (1938) | 41.0°F (1970) | 2.16 in (2004) |
| September 15 | 93.9°F (2000) | 41.0°F (1970) | 1.45 in (1996) |
| September 16 | 93.0°F (2023) | 43.0°F (1970) | 1.53 in (1949) |
| September 17 | 93.9°F (1951) | 37.0°F (1965) | 1.31 in (1997) |
| September 18 | 88.0°F (2012) | 39.9°F (1965) | 1.53 in (1968) |
| September 19 | 91.9°F (1999) | 41.0°F (1947) | 1.70 in (1998) |
| September 20 | 91.0°F (1999) | 42.1°F (1949) | 1.92 in (1982) |
| September 21 | 93.0°F (1999) | 42.1°F (1941) | 1.05 in (1977) |
| September 22 | 90.0°F (1999) | 39.9°F (1951) | 1.55 in (1972) |
| September 23 | 91.0°F (1987) | 43.0°F (1984) | 1.30 in (1969) |
| September 24 | 91.0°F (1942) | 37.9°F (1970) | 1.36 in (1977) |
| September 25 | 93.0°F (1942) | 37.9°F (1970) | 1.39 in (1950) |
| September 26 | 88.0°F (1991) | 37.0°F (1965) | 2.00 in (1950) |
| September 27 | 91.9°F (2003) | 34.0°F (1972) | 1.52 in (1940) |
| September 28 | 91.9°F (2003) | 35.1°F (1972) | 2.00 in (2011) |
| September 29 | 91.9°F (2003) | 39.9°F (1950) | 1.45 in (2013) |
| September 30 | 86.0°F (1993) | 39.9°F (1950) | 2.48 in (1951) |