Climate almanac
Portsmouth
Ohio, United States · 38.73°, -83.00°
What is the weather like in Portsmouth in September?
In September, Portsmouth is typically 81°F (27°C) during the day and 61°F (16°C) at night. The month brings about 3.7 in (93 mm) of precipitation in total.
- Average high81°F (27°C)
- Average low61°F (16°C)
- Precipitation3.7 in (93 mm)
- Clear or mostly clear days15
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)