September weather in Kettle Falls, WA
The average temperature in Kettle Falls in September is 61.0°F (43.8°F–78.2°F). Average precipitation: 0.72 inches.
September is a fall month in Kettle Falls, and is warmer than the annual average of 48.9°F. Daily temperatures swing about 34.4°F between overnight low and afternoon high. Expect about 5 days with precipitation. Daylight averages about 12h 20m. For travel, September is a comfortable month to visit.
Avg High
78.2°F
Avg Low
43.8°F
Precipitation
0.72 in
Daylight
12h 20m
September records in Kettle Falls
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 99.0°F (1950) | 32.0°F (1914) | 0.60 in (1899) |
| September 2 | 104.0°F (2025) | 33.1°F (1900) | 0.68 in (1936) |
| September 3 | 102.0°F (2003) | 32.0°F (1929) | 0.52 in (2014) |
| September 4 | 98.1°F (2003) | 28.9°F (1903) | 0.41 in (2023) |
| September 5 | 97.0°F (1998) | 30.0°F (1902) | 1.24 in (1940) |
| September 6 | 98.1°F (1998) | 30.0°F (1929) | 1.48 in (1927) |
| September 7 | 95.0°F (2011) | 30.0°F (1929) | 0.56 in (1912) |
| September 8 | 98.1°F (2011) | 32.0°F (1922) | 0.56 in (2003) |
| September 9 | 98.1°F (2011) | 28.9°F (1902) | 0.69 in (1947) |
| September 10 | 99.0°F (2011) | 28.0°F (1904) | 0.96 in (1927) |
| September 11 | 99.0°F (2011) | 28.9°F (1906) | 1.60 in (1927) |
| September 12 | 97.0°F (2002) | 28.0°F (1900) | 0.85 in (1907) |
| September 13 | 98.1°F (2013) | 25.0°F (1904) | 0.91 in (1927) |
| September 14 | 97.0°F (2001) | 28.0°F (1902) | 0.66 in (1933) |
| September 15 | 97.0°F (2001) | 25.0°F (1903) | 0.95 in (1914) |
| September 16 | 93.9°F (2001) | 26.1°F (1936) | 0.84 in (1926) |
| September 17 | 91.9°F (2008) | 24.1°F (1902) | 0.65 in (1997) |
| September 18 | 91.9°F (1994) | 27.0°F (1909) | 0.44 in (2013) |
| September 19 | 91.0°F (1917) | 28.9°F (1943) | 0.44 in (1941) |
| September 20 | 91.0°F (2012) | 24.1°F (1934) | 1.01 in (1945) |
| September 21 | 93.9°F (2014) | 26.1°F (1902) | 0.57 in (1904) |
| September 22 | 90.0°F (1999) | 27.0°F (1946) | 0.35 in (1901) |
| September 23 | 93.9°F (2001) | 23.0°F (2000) | 0.49 in (1915) |
| September 24 | 95.0°F (2011) | 21.0°F (1926) | 0.30 in (2020) |
| September 25 | 91.0°F (1952) | 21.9°F (1926) | 0.25 in (1924) |
| September 26 | 89.1°F (1952) | 23.0°F (1908) | 0.25 in (1925) |
| September 27 | 93.0°F (2003) | 27.0°F (1945) | 0.49 in (1925) |
| September 28 | 90.0°F (1918) | 19.9°F (1900) | 0.62 in (1995) |
| September 29 | 84.0°F (1993) | 14.0°F (1900) | 0.70 in (1909) |
| September 30 | 84.9°F (1998) | 24.1°F (1903) | 0.40 in (1951) |