Climate almanac
River Forest
Illinois, United States · 41.90°, -87.81°
What is the weather like in River Forest in August?
In August, River Forest is typically 80°F (27°C) during the day and 67°F (19°C) at night. The month brings about 3.2 in (81 mm) of precipitation in total.
- Average high80°F (27°C)
- Average low67°F (19°C)
- Precipitation3.2 in (81 mm)
- Clear or mostly clear days12
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)