September weather in Vienna, VA
The average temperature in Vienna in September is 66.5°F (57.1°F–75.9°F). Average precipitation: 4.16 inches.
September is a fall month in Vienna, and is warmer than the annual average of 54°F. Daily temperatures swing about 18.8°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 12h 14m. For travel, September is a comfortable month to visit.
Avg High
75.9°F
Avg Low
57.1°F
Precipitation
4.16 in
Daylight
12h 14m
September records in Vienna
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 96.1°F (2014) | 50.0°F (2025) | 3.23 in (1952) |
| September 2 | 95.0°F (2014) | 51.1°F (2025) | 2.86 in (2006) |
| September 3 | 91.0°F (2014) | 51.1°F (2025) | 1.82 in (1974) |
| September 4 | 93.9°F (2015) | 48.9°F (1997) | 3.14 in (1996) |
| September 5 | 93.9°F (2014) | 48.0°F (1997) | 2.42 in (1979) |
| September 6 | 96.1°F (2014) | 48.9°F (1997) | 2.24 in (1979) |
| September 7 | 98.1°F (2014) | 48.9°F (2013) | 3.25 in (1996) |
| September 8 | 91.0°F (2015) | 46.9°F (2025) | 2.44 in (1987) |
| September 9 | 93.0°F (2015) | 46.0°F (2024) | 4.26 in (2011) |
| September 10 | 96.1°F (2015) | 46.0°F (2024) | 4.70 in (1968) |
| September 11 | 88.0°F (2013) | 46.9°F (2012) | 2.72 in (1997) |
| September 12 | 91.9°F (2014) | 48.0°F (2012) | 1.94 in (1960) |
| September 13 | 90.0°F (2019) | 51.1°F (2025) | 3.11 in (1944) |
| September 14 | 86.0°F (1998) | 50.0°F (1996) | 7.10 in (1966) |
| September 15 | 91.9°F (2016) | 44.1°F (2001) | 2.03 in (1957) |
| September 16 | 88.0°F (1998) | 44.1°F (2011) | 3.11 in (1976) |
| September 17 | 89.1°F (1998) | 44.1°F (2007) | 2.14 in (1957) |
| September 18 | 87.1°F (2015) | 41.0°F (2013) | 2.01 in (1945) |
| September 19 | 88.0°F (2015) | 41.0°F (2013) | 2.18 in (2003) |
| September 20 | 87.1°F (2015) | 43.0°F (2020) | 1.37 in (1966) |
| September 21 | 86.0°F (2014) | 43.0°F (2020) | 1.27 in (1948) |
| September 22 | 87.1°F (1998) | 42.1°F (2020) | 2.47 in (1979) |
| September 23 | 88.0°F (2010) | 42.1°F (2020) | 2.57 in (2003) |
| September 24 | 89.1°F (2016) | 42.1°F (2013) | 2.18 in (2023) |
| September 25 | 91.0°F (2010) | 42.1°F (2013) | 1.94 in (1947) |
| September 26 | 87.1°F (2017) | 42.1°F (2001) | 3.86 in (1975) |
| September 27 | 87.1°F (2014) | 43.0°F (2001) | 3.98 in (1956) |
| September 28 | 90.0°F (1998) | 44.1°F (2000) | 1.34 in (1974) |
| September 29 | 82.0°F (2019) | 44.1°F (2000) | 2.03 in (2004) |
| September 30 | 82.9°F (2019) | 42.1°F (2000) | 1.88 in (2015) |