Climate almanac
Mount Vernon
New York, United States · 40.91°, -73.84°
What is the weather like in Mount Vernon in September?
In September, Mount Vernon is typically 75°F (24°C) during the day and 63°F (17°C) at night. The month brings about 3.9 in (100 mm) of precipitation in total.
- Average high75°F (24°C)
- Average low63°F (17°C)
- Precipitation3.9 in (100 mm)
- Clear or mostly clear days10
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)