United States · 1991–2020 normal
Mount Vernon in
September.
Typical September weather in Mount Vernon: 24.4°C by day, 9.6°C at night, 82 mm of rain over 7.4 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high24.4°C
Typical low9.6°C
Rain82 mm
Wet days7.4
Comfort score 79 this month, the highest of the year. Daylight is calculated as 12 h 25 from latitude 40.39°.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 5163799
- NOAA station
- USC00332044 · DANVILLE 2 W
- Station distance
- 16.2 km from the place centre
- Coverage
- Strong coverage · 29 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.