Climate almanac
Robertsville
New Jersey, United States · 40.35°, -74.29°
What is the weather like in Robertsville in September?
In September, Robertsville is typically 77°F (25°C) during the day and 63°F (17°C) at night. The month brings about 3.8 in (96 mm) of precipitation in total.
- Average high77°F (25°C)
- Average low63°F (17°C)
- Precipitation3.8 in (96 mm)
- Clear or mostly clear days10
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)