September weather in Onley, VA
The average temperature in Onley in September is 71.2°F (62.1°F–80.3°F). Average precipitation: 4.53 inches.
September is a fall month in Onley, and is warmer than the annual average of 58.8°F. Daily temperatures swing about 18.2°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 12h 14m. For travel, September is a comfortable month to visit.
Avg High
80.3°F
Avg Low
62.1°F
Precipitation
4.53 in
Daylight
12h 14m
September records in Onley
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 93.0°F (1980) | 46.0°F (1976) | 9.67 in (2006) |
| September 2 | 96.1°F (1980) | 46.9°F (1967) | 2.25 in (1972) |
| September 3 | 93.9°F (1961) | 44.1°F (1967) | 1.61 in (2000) |
| September 4 | 93.9°F (1985) | 51.1°F (1967) | 3.46 in (1998) |
| September 5 | 95.0°F (1985) | 46.9°F (1997) | 1.46 in (1988) |
| September 6 | 96.1°F (1983) | 48.0°F (1965) | 2.52 in (1959) |
| September 7 | 95.0°F (1983) | 44.1°F (1976) | 1.95 in (2017) |
| September 8 | 95.0°F (1985) | 48.9°F (1984) | 3.06 in (2009) |
| September 9 | 95.0°F (1985) | 48.0°F (2024) | 1.11 in (2014) |
| September 10 | 93.9°F (1985) | 45.0°F (1956) | 6.97 in (2018) |
| September 11 | 98.1°F (1983) | 44.1°F (1972) | 1.26 in (2009) |
| September 12 | 97.0°F (1983) | 48.0°F (1958) | 4.40 in (1960) |
| September 13 | 91.0°F (2019) | 45.0°F (1958) | 3.07 in (1964) |
| September 14 | 91.0°F (2008) | 46.9°F (1958) | 1.48 in (1973) |
| September 15 | 90.0°F (2016) | 44.1°F (1975) | 4.04 in (1963) |
| September 16 | 90.0°F (1956) | 46.9°F (1985) | 3.88 in (1999) |
| September 17 | 91.0°F (1956) | 41.0°F (1966) | 2.07 in (2025) |
| September 18 | 91.0°F (1978) | 45.0°F (1959) | 2.42 in (2020) |
| September 19 | 90.0°F (1970) | 44.1°F (1984) | 1.39 in (1989) |
| September 20 | 89.1°F (1983) | 44.1°F (1959) | 4.51 in (2016) |
| September 21 | 90.0°F (1965) | 43.0°F (1956) | 2.41 in (2016) |
| September 22 | 91.9°F (1970) | 41.0°F (1956) | 2.80 in (1994) |
| September 23 | 91.9°F (1970) | 45.0°F (1976) | 2.54 in (2023) |
| September 24 | 93.9°F (2010) | 39.0°F (1963) | 1.05 in (1965) |
| September 25 | 91.9°F (2010) | 41.0°F (1983) | 2.05 in (2006) |
| September 26 | 91.0°F (1970) | 39.9°F (1967) | 0.89 in (2000) |
| September 27 | 90.0°F (1986) | 45.0°F (1978) | 4.25 in (1985) |
| September 28 | 87.1°F (1998) | 42.1°F (1980) | 1.62 in (2025) |
| September 29 | 88.0°F (1973) | 46.0°F (1975) | 1.81 in (2021) |
| September 30 | 88.0°F (1973) | 42.1°F (1961) | 1.00 in (1987) |