Climate almanac
Johnstown
Colorado, United States · 40.34°, -104.91°
What is the weather like in Johnstown in August?
In August, Johnstown is typically 87°F (31°C) during the day and 59°F (15°C) at night. The month brings about 1.5 in (39 mm) of precipitation in total.
- Average high87°F (31°C)
- Average low59°F (15°C)
- Precipitation1.5 in (39 mm)
- Clear or mostly clear days16
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)