National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Ottumwa Regional Airport (KOTM)

Lat: 41.1°NLon: 92.44°WElev: 830ft.

Fair

41°F

5°C

Humidity 76%
Wind Speed Calm
Barometer 30.35 in (1028.0 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 10 Apr 11:53 pm CDT
Extended Forecast for

Ottumwa IA

  • Overnight

    Overnight: Partly cloudy, with a low around 41. East wind around 5 mph.

    Low: 41 °F

    Partly Cloudy

  • Saturday

    Saturday: A chance of showers, with thunderstorms also possible after 4pm. Mostly cloudy, with a high near 64. Southeast wind 6 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 64 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A slight chance of thunderstorms before 7pm, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a temperature rising to around 61 by 3am. South wind 11 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 57 °F⇑

    Chance
    T-storms

  • Sunday

    Sunday: A chance of showers and thunderstorms before 7am, then a chance of showers between 7am and 1pm, then showers and possibly a thunderstorm after 1pm. High near 72. Breezy, with a south southwest wind 14 to 20 mph, with gusts as high as 32 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 72 °F

    Breezy.
    Chance
    Showers then
    Showers

  • Sunday Night

    Sunday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 62. Breezy, with a south southwest wind 11 to 16 mph, with gusts as high as 26 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 62 °F

    Chance
    T-storms and
    Breezy

  • Monday

    Monday: Partly sunny, with a high near 81.

    High: 81 °F

    Partly Sunny

  • Monday Night

    Monday Night: A 30 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 67.

    Low: 67 °F

    Mostly Cloudy
    then Chance
    Showers

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 85. Breezy.

    High: 85 °F

    Breezy.
    Slight Chance
    T-storms then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 60. Breezy. Chance of precipitation is 50%.

    Low: 60 °F

    Chance
    T-storms and
    Breezy

Detailed Forecast

Overnight
Partly cloudy, with a low around 41. East wind around 5 mph.
Saturday
A chance of showers, with thunderstorms also possible after 4pm. Mostly cloudy, with a high near 64. Southeast wind 6 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A slight chance of thunderstorms before 7pm, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a temperature rising to around 61 by 3am. South wind 11 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
A chance of showers and thunderstorms before 7am, then a chance of showers between 7am and 1pm, then showers and possibly a thunderstorm after 1pm. High near 72. Breezy, with a south southwest wind 14 to 20 mph, with gusts as high as 32 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 62. Breezy, with a south southwest wind 11 to 16 mph, with gusts as high as 26 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday
Partly sunny, with a high near 81.
Monday Night
A 30 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 67.
Tuesday
A 50 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 85. Breezy.
Tuesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 60. Breezy. Chance of precipitation is 50%.
Wednesday
A 40 percent chance of showers. Mostly sunny, with a high near 78.
Wednesday Night
A 40 percent chance of showers. Partly cloudy, with a low around 55.
Thursday
A 30 percent chance of showers. Mostly sunny, with a high near 79.
Thursday Night
A 40 percent chance of showers. Mostly clear, with a low around 56.
Friday
A 50 percent chance of showers. Partly sunny, with a high near 74.
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ABOUT THIS FORECAST

 
Point Forecast:
Ottumwa IA
 41.02°N 92.42°W
Last Update:
10:16 pm CDT Apr 10, 2026
Forecast Valid:
12am CDT Apr 11, 2026-6pm CDT Apr 17, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation