Climate almanac
Windham
New Hampshire, United States · 42.80°, -71.30°
What is the weather like in Windham in September?
In September, Windham is typically 75°F (24°C) during the day and 57°F (14°C) at night. The month brings about 3.1 in (79 mm) of precipitation in total.
- Average high75°F (24°C)
- Average low57°F (14°C)
- Precipitation3.1 in (79 mm)
- Clear or mostly clear days10
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)