September weather in Republic, WA
The average temperature in Republic in September is 56.0°F (37.9°F–74.1°F). Average precipitation: 0.87 inches.
September is a fall month in Republic, and is warmer than the annual average of 43.8°F. Daily temperatures swing about 36.2°F between overnight low and afternoon high. Expect about 5 days with precipitation. Daylight averages about 12h 20m. For travel, September is cool.
Avg High
74.1°F
Avg Low
37.9°F
Precipitation
0.87 in
Daylight
12h 20m
September records in Republic
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 98.1°F (1938) | 28.9°F (1959) | 0.60 in (1901) |
| September 2 | 96.1°F (1928) | 28.9°F (1959) | 0.47 in (1979) |
| September 3 | 96.1°F (1988) | 26.1°F (1932) | 1.13 in (1997) |
| September 4 | 97.0°F (1924) | 25.0°F (1956) | 0.68 in (1940) |
| September 5 | 97.0°F (1988) | 25.0°F (1956) | 0.62 in (1919) |
| September 6 | 93.0°F (1998) | 26.1°F (1960) | 1.10 in (2013) |
| September 7 | 93.0°F (1924) | 26.1°F (1929) | 0.42 in (1927) |
| September 8 | 93.9°F (2011) | 24.1°F (1962) | 0.32 in (1991) |
| September 9 | 95.0°F (2011) | 26.1°F (1959) | 0.83 in (2019) |
| September 10 | 93.9°F (2011) | 24.1°F (1921) | 0.52 in (1927) |
| September 11 | 93.0°F (2011) | 26.1°F (1964) | 1.06 in (1927) |
| September 12 | 91.9°F (2013) | 23.0°F (1949) | 0.55 in (1919) |
| September 13 | 93.9°F (1923) | 19.0°F (1970) | 0.96 in (1980) |
| September 14 | 93.0°F (1924) | 23.0°F (1936) | 0.29 in (1985) |
| September 15 | 91.9°F (1937) | 21.9°F (1936) | 0.78 in (1996) |
| September 16 | 93.0°F (1929) | 24.1°F (1973) | 0.45 in (1926) |
| September 17 | 93.0°F (1981) | 24.1°F (1902) | 0.44 in (2013) |
| September 18 | 95.0°F (1938) | 23.0°F (1955) | 0.37 in (1964) |
| September 19 | 89.1°F (1918) | 23.0°F (1957) | 0.65 in (2010) |
| September 20 | 88.0°F (1910) | 21.9°F (1934) | 1.37 in (1973) |
| September 21 | 90.0°F (1938) | 18.0°F (1932) | 0.50 in (1982) |
| September 22 | 91.0°F (1928) | 19.9°F (1932) | 0.65 in (1901) |
| September 23 | 91.9°F (1928) | 19.0°F (2000) | 0.72 in (1973) |
| September 24 | 90.0°F (1943) | 14.0°F (1926) | 0.33 in (1927) |
| September 25 | 91.0°F (1952) | 18.0°F (1908) | 0.31 in (1959) |
| September 26 | 84.9°F (1962) | 21.0°F (1908) | 0.60 in (2001) |
| September 27 | 88.0°F (1918) | 21.0°F (1946) | 0.58 in (1986) |
| September 28 | 91.9°F (1918) | 19.0°F (1999) | 0.63 in (1905) |
| September 29 | 86.0°F (1918) | 19.9°F (1919) | 0.70 in (1940) |
| September 30 | 87.1°F (1938) | 21.0°F (1921) | 0.60 in (1937) |