September weather in Chewelah, WA
The average temperature in Chewelah in September is 57.5°F (39.0°F–76.0°F). Average precipitation: 0.95 inches.
September is a fall month in Chewelah, and is warmer than the annual average of 46.3°F. Daily temperatures swing about 37°F between overnight low and afternoon high. Daylight averages about 12h 20m. For travel, September is a comfortable month to visit.
Avg High
76.0°F
Avg Low
39.0°F
Precipitation
0.95 in
Daylight
12h 20m
September records in Chewelah
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 100.9°F (1967) | 28.0°F (1930) | 0.42 in (1981) |
| September 2 | 104.0°F (1988) | 28.0°F (1959) | 0.65 in (1936) |
| September 3 | 102.9°F (1988) | 26.1°F (1956) | 0.83 in (1941) |
| September 4 | 99.0°F (1988) | 28.0°F (1956) | 0.67 in (1937) |
| September 5 | 100.9°F (1988) | 25.0°F (1956) | 0.50 in (1940) |
| September 6 | 98.1°F (1944) | 21.9°F (1929) | 1.29 in (1927) |
| September 7 | 98.1°F (2024) | 23.0°F (1929) | 0.60 in (1995) |
| September 8 | 98.1°F (2024) | 21.9°F (1962) | 0.71 in (1978) |
| September 9 | 97.0°F (2011) | 25.0°F (1928) | 0.68 in (1931) |
| September 10 | 98.1°F (2011) | 25.0°F (1928) | 1.87 in (1927) |
| September 11 | 98.1°F (2011) | 26.1°F (1928) | 0.80 in (1927) |
| September 12 | 96.1°F (1990) | 21.9°F (1970) | 0.46 in (2004) |
| September 13 | 97.0°F (2013) | 21.9°F (2014) | 1.25 in (1927) |
| September 14 | 96.1°F (2013) | 23.0°F (1961) | 0.85 in (1933) |
| September 15 | 96.1°F (1938) | 21.0°F (1970) | 0.60 in (1959) |
| September 16 | 96.1°F (1938) | 21.0°F (1970) | 0.98 in (1926) |
| September 17 | 97.0°F (1981) | 23.0°F (1965) | 0.88 in (1988) |
| September 18 | 100.0°F (1981) | 25.0°F (1944) | 0.63 in (2013) |
| September 19 | 93.0°F (1952) | 23.0°F (1943) | 0.75 in (1969) |
| September 20 | 93.0°F (1979) | 16.0°F (1934) | 0.53 in (1945) |
| September 21 | 93.9°F (1938) | 21.9°F (1932) | 0.67 in (1969) |
| September 22 | 93.9°F (1987) | 19.9°F (1956) | 0.61 in (1945) |
| September 23 | 96.1°F (1987) | 21.9°F (1931) | 0.42 in (1969) |
| September 24 | 93.9°F (1990) | 12.0°F (1926) | 0.85 in (1986) |
| September 25 | 93.0°F (2011) | 21.0°F (1970) | 0.68 in (1972) |
| September 26 | 93.9°F (1952) | 19.9°F (1926) | 0.54 in (1982) |
| September 27 | 91.0°F (1952) | 23.0°F (1961) | 0.34 in (1959) |
| September 28 | 89.1°F (1949) | 19.0°F (1950) | 0.80 in (1955) |
| September 29 | 88.0°F (1967) | 19.9°F (2018) | 0.86 in (1962) |
| September 30 | 91.9°F (1992) | 21.9°F (1933) | 1.87 in (2013) |