Williamsburg Weather in September
Average highs run from 84°F on September 1 to 75°F on September 30, and lows from 54°F to 42°F. Normal precipitation for the month is 1.20 in over about 7 wet days.
September day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
September at a glance
- Average high
- 80°F
- Average low
- 48°F
- Precipitation
- 1.20 in
- Snowfall
- 0.2 in
- Record high
- 100°FSep 3, 1971
- Record low
- 25°FSep 27, 1908
- Chance of a freeze
- 24%
- Days of 90°F or more
- 3.5
- Daylight
- 13 h 00 min to 11 h 49 min
- Cloud cover
- 42%
- Humidity
- 46%
- Dew point
- 37°F
- Wind
- 7.4 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| Sep 1 | 84°F | 54°F | 97°F 1948 | 41°F 1910 | 28% | 0% |
| Sep 2 | 84°F | 53°F | 98°F 1947 | 42°F 1904 | 28% | 0% |
| Sep 3 | 84°F | 53°F | 100°F 1971 | 36°F 1961 | 27% | 0% |
| Sep 4 | 84°F | 53°F | 99°F 1899 | 37°F 1961 | 27% | 0% |
| Sep 5 | 83°F | 52°F | 100°F 1899 | 37°F 1961 | 26% | 0% |
| Sep 6 | 83°F | 52°F | 99°F 1899 | 39°F 1943 | 26% | 0% |
| Sep 7 | 83°F | 52°F | 97°F 2020 | 39°F 1898 | 26% | 0% |
| Sep 8 | 83°F | 51°F | 94°F 1931 | 38°F 1941 | 25% | 0% |
| Sep 9 | 82°F | 51°F | 94°F 1931 | 30°F 2020 | 25% | 0% |
| Sep 10 | 82°F | 51°F | 96°F 2021 | 30°F 2020 | 25% | 0% |
| Sep 11 | 82°F | 50°F | 97°F 2021 | 35°F 2020 | 24% | 0% |
| Sep 12 | 82°F | 50°F | 97°F 2021 | 32°F 1902 | 24% | 0% |
| Sep 13 | 81°F | 50°F | 94°F 1895 | 34°F 1898 | 24% | 0% |
| Sep 14 | 81°F | 49°F | 94°F 1990 | 32°F 1993 | 23% | 0% |
| Sep 15 | 81°F | 49°F | 94°F 1895 | 33°F 1912 | 23% | 0% |
| Sep 16 | 80°F | 48°F | 95°F 1895 | 32°F 1903 | 23% | 0% |
| Sep 17 | 80°F | 48°F | 93°F 2018 | 29°F 1965 | 22% | 0% |
| Sep 18 | 80°F | 48°F | 94°F 2018 | 31°F 1971 | 22% | 0% |
| Sep 19 | 79°F | 47°F | 95°F 2018 | 30°F 1971 | 22% | 0% |
| Sep 20 | 79°F | 47°F | 91°F 1956 | 29°F 1971 | 21% | 0% |
| Sep 21 | 79°F | 46°F | 91°F 2005 | 28°F 1978 | 21% | 0% |
| Sep 22 | 78°F | 46°F | 92°F 1980 | 28°F 1978 | 21% | 0% |
| Sep 23 | 78°F | 46°F | 90°F 1898 | 28°F 1895 | 20% | 0% |
| Sep 24 | 77°F | 45°F | 89°F 1966 | 30°F 1894 | 20% | 0% |
| Sep 25 | 77°F | 45°F | 94°F 1898 | 26°F 1926 | 20% | 0% |
| Sep 26 | 77°F | 44°F | 93°F 1898 | 29°F 1920 | 20% | 0% |
| Sep 27 | 76°F | 44°F | 93°F 1899 | 25°F 1908 | 19% | 0% |
| Sep 28 | 76°F | 43°F | 90°F 2001 | 26°F 1945 | 19% | 0% |
| Sep 29 | 75°F | 43°F | 92°F 1998 | 25°F 1985 | 19% | 1% |
| Sep 30 | 75°F | 42°F | 90°F 1899 | 26°F 1985 | 19% | 1% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (MDT).
- September 1
- sunrise 6:30 AM, sunset 7:30 PM
- September 30
- sunrise 6:56 AM, sunset 6:45 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00051294 (Canon City), public domain. Records: NOAA GHCN-Daily, station USC00051294, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.