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

Thornburg IA

  • Overnight

    Overnight: Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 61. Calm wind becoming north around 5 mph.

    Low: 61 °F

    Patchy Fog

  • Thursday

    Thursday: Patchy fog before 9am. Otherwise, partly sunny, then gradually becoming 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 57. Calm wind becoming southeast around 5 mph.

    Low: 57 °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 30 percent chance of showers. Partly sunny, with a high near 81.

    High: 81 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 60.

    Low: 60 °F

    Partly Cloudy

  • Sunday

    Sunday: A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 79.

    High: 79 °F

    Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 66. Chance of precipitation is 30%.

    Low: 66 °F

    Chance
    T-storms

Detailed Forecast

Overnight
Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 61. Calm wind becoming north around 5 mph.
Thursday
Patchy fog before 9am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 80. Northeast wind around 5 mph.
Thursday Night
Clear, with a low around 57. 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 30 percent chance of showers. Partly sunny, with a high near 81.
Saturday Night
Partly cloudy, with a low around 60.
Sunday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 79.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 66. Chance of precipitation is 30%.
Monday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 87. Breezy. Chance of precipitation is 60%.
Monday Night
Showers likely and possibly a thunderstorm. Partly cloudy, with a low around 60. Chance of precipitation is 70%.
Tuesday
A 30 percent chance of showers. Partly sunny, with a high near 74.
Tuesday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 58.
Wednesday
A 50 percent chance of showers. Mostly cloudy, with a high near 75.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Thornburg IA
 41.46°N 92.35°W (Elev. 902 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