September weather in Pomeroy, WA
The average temperature in Pomeroy in September is 60.3°F (45.2°F–75.4°F). Average precipitation: 0.58 inches.
September is a fall month in Pomeroy, and is warmer than the annual average of 49.8°F. Daily temperatures swing about 30.2°F between overnight low and afternoon high. Expect about 4 days with precipitation. Daylight averages about 12h 19m. For travel, September is a comfortable month to visit.
Avg High
75.4°F
Avg Low
45.2°F
Precipitation
0.58 in
Daylight
12h 19m
September records in Pomeroy
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 100.0°F (1893) | 35.1°F (1999) | 0.38 in (1971) |
| September 2 | 99.0°F (1988) | 34.0°F (1929) | 0.57 in (1936) |
| September 3 | 102.0°F (1950) | 35.1°F (1956) | 0.34 in (1899) |
| September 4 | 100.0°F (1988) | 34.0°F (1956) | 0.39 in (1941) |
| September 5 | 100.0°F (1988) | 35.1°F (1929) | 0.72 in (1897) |
| September 6 | 98.1°F (1955) | 37.0°F (1989) | 0.87 in (1901) |
| September 7 | 102.0°F (1944) | 33.1°F (1939) | 0.52 in (1978) |
| September 8 | 100.9°F (1944) | 28.9°F (1962) | 0.45 in (2019) |
| September 9 | 99.0°F (1944) | 30.0°F (2014) | 0.42 in (1985) |
| September 10 | 99.0°F (1944) | 32.0°F (1988) | 0.85 in (2000) |
| September 11 | 99.0°F (1944) | 30.0°F (1988) | 0.37 in (1983) |
| September 12 | 102.0°F (1944) | 30.9°F (2012) | 1.03 in (1893) |
| September 13 | 97.0°F (1944) | 32.0°F (2012) | 0.85 in (1980) |
| September 14 | 98.1°F (1953) | 26.1°F (1970) | 1.12 in (1966) |
| September 15 | 99.0°F (1979) | 28.9°F (1936) | 0.70 in (1959) |
| September 16 | 96.1°F (1979) | 30.9°F (1965) | 1.03 in (1949) |
| September 17 | 100.9°F (1981) | 28.9°F (1965) | 0.70 in (1947) |
| September 18 | 100.9°F (1981) | 28.9°F (1944) | 0.83 in (1968) |
| September 19 | 95.0°F (1897) | 27.0°F (1957) | 0.92 in (1998) |
| September 20 | 91.9°F (2008) | 28.9°F (1934) | 0.63 in (1971) |
| September 21 | 97.0°F (1939) | 30.0°F (1960) | 0.41 in (1968) |
| September 22 | 96.1°F (1966) | 27.0°F (2000) | 0.60 in (1945) |
| September 23 | 93.0°F (2001) | 28.0°F (2000) | 0.60 in (1945) |
| September 24 | 95.0°F (1938) | 28.9°F (1961) | 0.73 in (1992) |
| September 25 | 96.1°F (2011) | 24.1°F (1934) | 0.32 in (1901) |
| September 26 | 95.0°F (1952) | 28.0°F (1934) | 1.45 in (1947) |
| September 27 | 91.9°F (1952) | 28.9°F (1999) | 0.52 in (1988) |
| September 28 | 91.9°F (1967) | 30.0°F (1999) | 0.40 in (1897) |
| September 29 | 95.0°F (1963) | 26.1°F (1950) | 0.46 in (1930) |
| September 30 | 88.0°F (1980) | 21.9°F (2018) | 0.43 in (2005) |