September weather in Dewey, OK
The average temperature in Dewey in September is 70.9°F (57.7°F–84.2°F). Average precipitation: 3.43 inches.
September is a fall month in Dewey, and is warmer than the annual average of 58.2°F. Daily temperatures swing about 26.5°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 12h 13m. For travel, September is a comfortable month to visit.
Avg High
84.2°F
Avg Low
57.7°F
Precipitation
3.43 in
Daylight
12h 13m
September records in Dewey
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 109.0°F (2000) | 43.0°F (1949) | 3.20 in (1934) |
| September 2 | 109.0°F (2000) | 44.1°F (1949) | 4.35 in (1931) |
| September 3 | 109.9°F (2012) | 44.1°F (1974) | 1.86 in (1966) |
| September 4 | 108.0°F (1947) | 41.0°F (1974) | 5.88 in (1953) |
| September 5 | 104.0°F (1939) | 43.0°F (1974) | 4.68 in (1926) |
| September 6 | 105.1°F (1925) | 42.1°F (2011) | 1.90 in (1989) |
| September 7 | 107.1°F (1947) | 44.1°F (2011) | 0.76 in (2008) |
| September 8 | 106.0°F (1925) | 42.1°F (1956) | 3.54 in (2007) |
| September 9 | 102.9°F (1925) | 46.0°F (2012) | 3.14 in (1937) |
| September 10 | 102.0°F (1936) | 42.1°F (1962) | 1.78 in (1922) |
| September 11 | 104.0°F (2000) | 43.0°F (1968) | 2.48 in (1925) |
| September 12 | 102.0°F (1956) | 43.0°F (1968) | 2.08 in (1957) |
| September 13 | 100.0°F (1930) | 43.0°F (2006) | 3.75 in (1961) |
| September 14 | 102.0°F (1956) | 45.0°F (1959) | 3.38 in (1998) |
| September 15 | 105.1°F (1956) | 41.0°F (1993) | 4.30 in (1962) |
| September 16 | 102.0°F (1956) | 39.9°F (1993) | 3.39 in (1969) |
| September 17 | 100.0°F (1931) | 39.9°F (1993) | 4.23 in (1986) |
| September 18 | 100.0°F (1931) | 36.0°F (1981) | 2.58 in (1971) |
| September 19 | 100.9°F (2022) | 39.0°F (1991) | 2.47 in (2002) |
| September 20 | 102.0°F (1954) | 33.1°F (1938) | 2.41 in (1974) |
| September 21 | 102.0°F (2022) | 36.0°F (1938) | 2.67 in (1947) |
| September 22 | 97.0°F (1930) | 32.0°F (1995) | 1.54 in (1998) |
| September 23 | 98.1°F (1931) | 28.9°F (1995) | 2.58 in (1970) |
| September 24 | 99.0°F (1931) | 32.0°F (1989) | 3.40 in (1945) |
| September 25 | 99.0°F (1929) | 36.0°F (1989) | 4.40 in (1945) |
| September 26 | 97.0°F (1938) | 30.0°F (2000) | 3.19 in (1996) |
| September 27 | 95.0°F (1953) | 35.1°F (2000) | 2.13 in (1973) |
| September 28 | 102.0°F (1953) | 37.9°F (1967) | 2.00 in (2013) |
| September 29 | 97.0°F (1953) | 34.0°F (1949) | 1.20 in (1926) |
| September 30 | 99.0°F (1928) | 30.0°F (1984) | 7.07 in (1986) |