Climate almanac
Waterloo
Iowa, United States · 42.49°, -92.34°
What is the weather like in Waterloo in May?
In May, Waterloo is typically 73°F (23°C) during the day and 52°F (11°C) at night. The month brings about 5.6 in (143 mm) of precipitation in total.
- Average high73°F (23°C)
- Average low52°F (11°C)
- Precipitation5.6 in (143 mm)
- Clear or mostly clear days10
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)