United States · 1991–2020 normal
Mount Vernon in
September.
Typical September weather in Mount Vernon: 27.5°C by day, 15.3°C at night, 81 mm of rain over 5.7 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high27.5°C
Typical low15.3°C
Rain81 mm
Wet days5.7
Comfort score 79 this month, the highest of the year. Daylight is calculated as 12 h 23 from latitude 37.93°.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 4261837
- NOAA station
- USC00126001 · MT VERNON
- Station distance
- 0.4 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.