September weather in Williamsburg, VA
The average temperature in Williamsburg in September is 71.8°F (63.1°F–80.5°F). Average precipitation: 5.40 inches.
September is a fall month in Williamsburg, and is warmer than the annual average of 59.7°F. Daily temperatures swing about 17.4°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 12h 14m. For travel, September is a wet month.
Avg High
80.5°F
Avg Low
63.1°F
Precipitation
5.40 in
Daylight
12h 14m
September records in Williamsburg
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 98.1°F (1980) | 54.0°F (1954) | 9.95 in (1975) |
| September 2 | 97.0°F (1980) | 50.0°F (1992) | 0.90 in (1993) |
| September 3 | 95.0°F (1961) | 48.0°F (1967) | 1.13 in (2000) |
| September 4 | 95.0°F (1985) | 51.1°F (1967) | 1.55 in (1998) |
| September 5 | 95.0°F (1983) | 48.9°F (1997) | 2.52 in (1979) |
| September 6 | 102.9°F (1954) | 48.0°F (1997) | 2.49 in (1974) |
| September 7 | 102.9°F (1954) | 48.9°F (1988) | 1.13 in (1974) |
| September 8 | 100.0°F (1954) | 45.0°F (1988) | 5.01 in (2009) |
| September 9 | 96.1°F (2016) | 43.0°F (1986) | 2.12 in (2020) |
| September 10 | 95.0°F (1983) | 46.0°F (1956) | 2.68 in (1976) |
| September 11 | 100.0°F (1983) | 45.0°F (1976) | 1.34 in (2022) |
| September 12 | 98.1°F (1983) | 46.9°F (1993) | 5.93 in (1960) |
| September 13 | 93.0°F (1998) | 48.0°F (1993) | 2.59 in (1964) |
| September 14 | 93.9°F (2016) | 43.0°F (1953) | 1.81 in (2007) |
| September 15 | 91.0°F (1998) | 43.0°F (1985) | 2.63 in (1999) |
| September 16 | 91.9°F (1956) | 44.1°F (1985) | 14.28 in (1999) |
| September 17 | 93.0°F (1958) | 44.1°F (1966) | 1.75 in (2020) |
| September 18 | 93.0°F (1978) | 44.1°F (1953) | 3.38 in (2003) |
| September 19 | 93.0°F (1965) | 44.1°F (1986) | 2.65 in (2016) |
| September 20 | 93.0°F (1965) | 44.1°F (1959) | 1.60 in (1966) |
| September 21 | 93.0°F (1980) | 44.1°F (1962) | 4.72 in (1972) |
| September 22 | 97.0°F (1980) | 43.0°F (1962) | 4.17 in (1979) |
| September 23 | 95.0°F (1980) | 37.9°F (1983) | 2.92 in (2023) |
| September 24 | 95.0°F (2010) | 39.9°F (1981) | 1.84 in (2014) |
| September 25 | 93.9°F (2010) | 39.9°F (1963) | 2.62 in (2008) |
| September 26 | 93.0°F (1970) | 39.9°F (1983) | 1.90 in (1985) |
| September 27 | 93.9°F (1998) | 39.9°F (1978) | 5.92 in (1985) |
| September 28 | 93.0°F (1998) | 42.1°F (1989) | 0.77 in (1972) |
| September 29 | 90.0°F (1973) | 42.1°F (1951) | 2.63 in (2020) |
| September 30 | 89.1°F (1954) | 44.1°F (1967) | 9.39 in (2010) |