Climate almanac

Waterloo

Iowa, US · 42.49°, -92.34°

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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