Climate almanac
Waterloo
Iowa, US · 42.49°, -92.34°
What is the climate like in Waterloo?
Waterloo is warmest in July, when daily highs average 83°F (28°C), and coolest in January, when lows fall to about 14°F (-10°C). The wettest month is typically May and the driest is February; the year sees roughly 41 in of precipitation.
- Warmest monthJuly — average high 83°F (28°C)
- Coolest monthJanuary — average low 14°F (-10°C)
- Wettest monthMay (5.6 in)
- Driest monthFebruary (1.5 in)
- Annual precipitation41 in