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.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Delta IA

  • Overnight

    Overnight: Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 62. West wind around 5 mph becoming north.

    Low: 62 °F

    Patchy Fog

  • Thursday

    Thursday: Patchy fog before 9am. Otherwise, mostly sunny, with a high near 80. Northeast wind around 5 mph.

    High: 80 °F

    Patchy Fog
    then Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 58. Calm wind becoming southeast around 5 mph.

    Low: 58 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 81. South wind 5 to 10 mph.

    High: 81 °F

    Sunny

  • Friday Night

    Friday Night: A 30 percent chance of showers after 1am. Mostly clear, with a low around 64.

    Low: 64 °F

    Mostly Clear
    then Chance
    Showers

  • Saturday

    Saturday: A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 81. Chance of precipitation is 40%.

    High: 81 °F

    Chance
    Showers then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 61.

    Low: 61 °F

    Partly Cloudy

  • Sunday

    Sunday: A 40 percent chance of showers before 1pm. Partly sunny, with a high near 80.

    High: 80 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 66.

    Low: 66 °F

    Mostly Cloudy
    then Chance
    Showers

Detailed Forecast

Overnight
Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 62. West wind around 5 mph becoming north.
Thursday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 80. Northeast wind around 5 mph.
Thursday Night
Clear, with a low around 58. Calm wind becoming southeast around 5 mph.
Friday
Sunny, with a high near 81. South wind 5 to 10 mph.
Friday Night
A 30 percent chance of showers after 1am. Mostly clear, with a low around 64.
Saturday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 81. Chance of precipitation is 40%.
Saturday Night
Partly cloudy, with a low around 61.
Sunday
A 40 percent chance of showers before 1pm. Partly sunny, with a high near 80.
Sunday Night
A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 66.
Monday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 88. Breezy. Chance of precipitation is 50%.
Monday Night
Showers likely and possibly a thunderstorm. Partly cloudy, with a low around 61. Chance of precipitation is 70%.
Tuesday
A 30 percent chance of showers. Mostly cloudy, with a high near 74.
Tuesday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 59.
Wednesday
A 50 percent chance of showers. Mostly cloudy, with a high near 76.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Delta IA
 41.33°N 92.32°W (Elev. 840 ft)
Last Update:
6:56 pm CDT Sep 9, 2026
Forecast Valid:
12am CDT Sep 10, 2026-6pm CDT Sep 16, 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