Climate almanac
Johnstown
Colorado, United States · 40.34°, -104.91°
What is the weather like in Johnstown in May?
In May, Johnstown is typically 71°F (21°C) during the day and 45°F (7°C) at night. The month brings about 4.3 in (108 mm) of precipitation in total. Snowfall averages about 1.4 in (36 mm) over the month.
- Average high71°F (21°C)
- Average low45°F (7°C)
- Precipitation4.3 in (108 mm)
- Clear or mostly clear days11
- Snowfall1.4 in (36 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)