September weather in Oroville, WA
The average temperature in Oroville in September is 61.2°F (45.9°F–76.5°F). Average precipitation: inches.
September is a fall month in Oroville, and is warmer than the annual average of 49.7°F. Daily temperatures swing about 30.6°F between overnight low and afternoon high. Daylight averages about 12h 20m. For travel, September is a comfortable month to visit.
Avg High
76.5°F
Avg Low
45.9°F
Precipitation
in
Daylight
12h 20m
September records in Oroville
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 97.0°F (1987) | 41.0°F (1999) | 0.00 in (1984) |
| September 2 | 96.1°F (1998) | 42.1°F (1984) | 0.95 in (1989) |
| September 3 | 95.0°F (1988) | 41.0°F (1999) | 0.40 in (2000) |
| September 4 | 93.9°F (1988) | 43.0°F (1994) | 0.30 in (1996) |
| September 5 | 95.0°F (1988) | 37.0°F (1992) | 0.06 in (1984) |
| September 6 | 93.9°F (1998) | 34.0°F (1992) | 0.40 in (1985) |
| September 7 | 93.9°F (1998) | 33.1°F (1992) | 0.07 in (1985) |
| September 8 | 90.0°F (1993) | 35.1°F (1984) | 0.20 in (2003) |
| September 9 | 91.9°F (1987) | 37.0°F (1992) | 0.10 in (1994) |
| September 10 | 90.0°F (1990) | 39.0°F (1984) | 0.12 in (1985) |
| September 11 | 91.9°F (1987) | 37.0°F (1986) | 0.32 in (1985) |
| September 12 | 91.0°F (1987) | 37.9°F (1986) | 0.03 in (1985) |
| September 13 | 89.1°F (2002) | 36.0°F (1993) | 0.02 in (1985) |
| September 14 | 89.1°F (2002) | 36.0°F (1984) | 0.45 in (1986) |
| September 15 | 89.1°F (1998) | 37.9°F (1985) | 0.76 in (1996) |
| September 16 | 90.0°F (1998) | 37.0°F (1987) | 0.25 in (1986) |
| September 17 | 88.0°F (1984) | 35.1°F (2003) | 0.44 in (1997) |
| September 18 | 84.9°F (1984) | 32.0°F (1988) | 0.45 in (2004) |
| September 19 | 86.0°F (1999) | 36.0°F (1989) | 0.45 in (2004) |
| September 20 | 84.9°F (1999) | 35.1°F (1985) | 0.22 in (1993) |
| September 21 | 87.1°F (1987) | 33.1°F (1988) | 0.06 in (1996) |
| September 22 | 88.0°F (1987) | 30.9°F (1985) | 0.04 in (1984) |
| September 23 | 87.1°F (1990) | 28.9°F (2000) | 0.01 in (1992) |
| September 24 | 87.1°F (2001) | 32.0°F (2000) | 0.05 in (1998) |
| September 25 | 86.0°F (2003) | 33.1°F (1984) | 0.20 in (1998) |
| September 26 | 82.0°F (2003) | 34.0°F (2000) | 0.27 in (2001) |
| September 27 | 86.0°F (1994) | 32.0°F (1984) | 0.33 in (2001) |
| September 28 | 82.0°F (1991) | 27.0°F (1984) | 0.34 in (1995) |
| September 29 | 80.1°F (1992) | 27.0°F (1985) | 0.05 in (2002) |
| September 30 | 82.0°F (1987) | 28.9°F (1985) | 0.04 in (1995) |