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

Hazardous Weather Conditions

Current conditions at

Ottumwa Regional Airport (KOTM)

Lat: 41.1°NLon: 92.44°WElev: 830ft.

Overcast

69°F

21°C

Humidity 78%
Wind Speed SE 5 mph
Barometer 29.84 in (1009.9 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 16 May 9:53 am CDT
Extended Forecast for

Agency IA

  • Today

    Today: A 30 percent chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 86. South southeast wind 6 to 8 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 86 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms before 7pm, then showers likely and possibly a thunderstorm between 7pm and 1am, then a chance of showers and thunderstorms after 1am. Cloudy, with a low around 64. East southeast wind 8 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 64 °F

    Showers
    Likely

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms, mainly between 8am and 10am. Mostly cloudy, then gradually becoming sunny, with a high near 88. Windy, with a south wind 13 to 23 mph, with gusts as high as 36 mph.

    High: 88 °F

    Slight Chance
    T-storms and
    Windy

  • Sunday Night

    Sunday Night: A 50 percent chance of showers and thunderstorms after 1am. Increasing clouds, with a low around 68. Windy, with a south wind 15 to 21 mph, with gusts as high as 32 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 68 °F

    Mostly Clear
    and Windy
    then Chance
    T-storms and
    Breezy

  • Monday

    Monday: Showers and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. High near 86. Breezy, with a south wind 16 to 20 mph, with gusts as high as 31 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 86 °F

    Showers and
    Breezy

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm. Low around 63. Breezy. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 63 °F

    T-storms and
    Breezy

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 76. Breezy.

    High: 76 °F

    Slight Chance
    T-storms and
    Breezy then
    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 49.

    Low: 49 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 67.

    High: 67 °F

    Mostly Sunny

Detailed Forecast

Today
A 30 percent chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 86. South southeast wind 6 to 8 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
A chance of showers and thunderstorms before 7pm, then showers likely and possibly a thunderstorm between 7pm and 1am, then a chance of showers and thunderstorms after 1am. Cloudy, with a low around 64. East southeast wind 8 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.
Sunday
A 20 percent chance of showers and thunderstorms, mainly between 8am and 10am. Mostly cloudy, then gradually becoming sunny, with a high near 88. Windy, with a south wind 13 to 23 mph, with gusts as high as 36 mph.
Sunday Night
A 50 percent chance of showers and thunderstorms after 1am. Increasing clouds, with a low around 68. Windy, with a south wind 15 to 21 mph, with gusts as high as 32 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
Showers and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. High near 86. Breezy, with a south wind 16 to 20 mph, with gusts as high as 31 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Monday Night
Showers and possibly a thunderstorm. Low around 63. Breezy. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Tuesday
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 76. Breezy.
Tuesday Night
Mostly cloudy, with a low around 49.
Wednesday
Mostly sunny, with a high near 67.
Wednesday Night
Partly cloudy, with a low around 46.
Thursday
Mostly sunny, with a high near 71.
Thursday Night
Partly cloudy, with a low around 49.
Friday
Mostly sunny, with a high near 77.
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ABOUT THIS FORECAST

 
Point Forecast:
Agency IA
 41°N 92.3°W
Last Update:
6:06 am CDT May 16, 2026
Forecast Valid:
10am CDT May 16, 2026-6pm CDT May 22, 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