Iowa climate

Typical historical weather for Iowa, United States, averaged across 10 years of hourly climate data. Pick a date for a specific day.

Want today's actual conditions instead? See the current forecast for Iowa.

Annual average

21.1°C

across all months

Warmest month

33.2°C

Aug average high

Coolest month

6.6°C

Jan average low

Annual rainfall

1500mm

total per year

Monthly averages

Average daily high/low temperature (band) and monthly rainfall (bars).

● Avg high● Avg low▮ Rainfall

Records on file

Hottest day

43°C

27 August 2023

Coldest day

-11.3°C

22 January 2025

Wettest day

116.1mm

3 December 2016

Windiest day

9.9m/s

27 August 2020