Climate almanac
Lewistown
Montana, United States · 47.06°, -109.43°
What is the weather like in Lewistown in August?
In August, Lewistown is typically 82°F (28°C) during the day and 54°F (12°C) at night. The month brings about 1.3 in (33 mm) of precipitation in total.
- Average high82°F (28°C)
- Average low54°F (12°C)
- Precipitation1.3 in (33 mm)
- Clear or mostly clear days18
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)