September weather in Kittitas, WA
The average temperature in Kittitas in September is 59.8°F (43.4°F–76.1°F). Average precipitation: 0.33 inches.
September is a fall month in Kittitas, and is warmer than the annual average of 47.7°F. Daily temperatures swing about 32.7°F between overnight low and afternoon high. Expect about 3 days with precipitation. Daylight averages about 12h 19m. For travel, September is a comfortable month to visit.
Avg High
76.1°F
Avg Low
43.4°F
Precipitation
0.33 in
Daylight
12h 19m
September records in Kittitas
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 97.0°F (1974) | 28.9°F (2014) | 0.21 in (1981) |
| September 2 | 95.0°F (1911) | 25.0°F (2014) | 0.53 in (1907) |
| September 3 | 97.0°F (1935) | 25.0°F (2014) | 0.23 in (1916) |
| September 4 | 96.1°F (1924) | 21.9°F (2014) | 0.53 in (1911) |
| September 5 | 96.1°F (2003) | 24.1°F (2014) | 0.67 in (1925) |
| September 6 | 98.1°F (2020) | 19.9°F (1895) | 0.87 in (2013) |
| September 7 | 95.0°F (1998) | 30.9°F (1913) | 0.67 in (1995) |
| September 8 | 91.0°F (1935) | 28.0°F (2014) | 0.79 in (2010) |
| September 9 | 93.9°F (1935) | 21.9°F (1895) | 0.36 in (1911) |
| September 10 | 93.9°F (2011) | 25.0°F (2014) | 0.49 in (1985) |
| September 11 | 93.9°F (2011) | 26.1°F (2014) | 0.95 in (1919) |
| September 12 | 93.9°F (1929) | 21.0°F (2014) | 0.65 in (1903) |
| September 13 | 95.0°F (2013) | 19.9°F (2014) | 0.26 in (1895) |
| September 14 | 93.9°F (2009) | 19.9°F (2014) | 0.73 in (1966) |
| September 15 | 91.9°F (1937) | 21.0°F (2014) | 0.35 in (1900) |
| September 16 | 91.9°F (2001) | 23.0°F (2014) | 0.61 in (1986) |
| September 17 | 93.9°F (1981) | 30.0°F (1901) | 0.27 in (1954) |
| September 18 | 90.0°F (2008) | 26.1°F (2014) | 0.77 in (1986) |
| September 19 | 91.9°F (1906) | 28.9°F (1957) | 0.64 in (2010) |
| September 20 | 89.1°F (1939) | 28.0°F (1983) | 0.20 in (2010) |
| September 21 | 93.0°F (1939) | 24.1°F (1926) | 0.40 in (1910) |
| September 22 | 87.1°F (1928) | 24.1°F (1926) | 0.58 in (1969) |
| September 23 | 88.0°F (1987) | 19.0°F (1926) | 1.16 in (1984) |
| September 24 | 91.0°F (2009) | 16.0°F (1926) | 0.34 in (2020) |
| September 25 | 89.1°F (1990) | 19.9°F (1926) | 0.71 in (1982) |
| September 26 | 88.0°F (1974) | 24.1°F (1908) | 0.53 in (1923) |
| September 27 | 87.1°F (1963) | 25.0°F (2014) | 0.49 in (1981) |
| September 28 | 88.0°F (1963) | 23.0°F (1896) | 0.32 in (1962) |
| September 29 | 89.1°F (1976) | 21.0°F (1919) | 0.39 in (1909) |
| September 30 | 86.0°F (1993) | 23.0°F (2014) | 0.17 in (1995) |