United States · 1991–2020 normal
Mount Vernon in
September.
Typical September weather in Mount Vernon: 25.4°C by day, 11.7°C at night, 77 mm of rain over 6.4 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high25.4°C
Typical low11.7°C
Rain77 mm
Wet days6.4
Comfort score 81 this month, the highest of the year. Daylight is calculated as 12 h 25 from latitude 40.67°.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 4923914
- NOAA station
- USC00129138 · WABASH
- Station distance
- 13.6 km from the place centre
- Coverage
- Good coverage · 23 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.