Climate almanac
Old Jefferson
Louisiana, United States · 30.38°, -91.02°
What is the weather like in Old Jefferson in September?
In September, Old Jefferson is typically 89°F (32°C) during the day and 71°F (22°C) at night. The month brings about 4.8 in (121 mm) of precipitation in total.
- Average high89°F (32°C)
- Average low71°F (22°C)
- Precipitation4.8 in (121 mm)
- Clear or mostly clear days15
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)