Ottumwa climate

Typical historical weather for Ottumwa, 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 Ottumwa.

Annual average

11.7°C

across all months

Warmest month

30.1°C

Jul average high

Coolest month

-8.2°C

Jan average low

Annual rainfall

973mm

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

40.4°C

21 June 2022

Coldest day

-30°C

31 January 2019

Wettest day

70.5mm

20 April 2025

Windiest day

10.7m/s

13 January 2024