Climate almanac
Williamstown
New Jersey, United States · 39.69°, -75.00°
What is the weather like in Williamstown in August?
In August, Williamstown is typically 85°F (29°C) during the day and 69°F (21°C) at night. The month brings about 4.1 in (105 mm) of precipitation in total.
- Average high85°F (29°C)
- Average low69°F (21°C)
- Precipitation4.1 in (105 mm)
- Clear or mostly clear days10
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)