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

66°F

19°C

Humidity 65%
Wind Speed S 12 mph
Barometer 29.98 in (1014.6 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 5 Oct 1:53 am CDT
Extended Forecast for

Thornburg IA

  • Overnight

    Overnight: Clear, with a low around 61. South wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 61 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 86. Breezy, with a south wind 10 to 20 mph, with gusts as high as 35 mph.

    High: 86 °F

    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: A 50 percent chance of showers and thunderstorms, mainly after 1am. Increasing clouds, with a low around 59. South wind 5 to 10 mph becoming west after midnight. Winds could gust as high as 25 mph.

    Low: 59 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Monday

    Monday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 70. North wind around 5 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    High: 70 °F

    Showers
    Likely

  • Monday Night

    Monday Night: Showers likely before 1am, then showers likely and possibly a thunderstorm between 1am and 4am, then showers likely after 4am. Mostly cloudy, with a low around 52. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 52 °F

    Showers
    Likely

  • Tuesday

    Tuesday: Mostly sunny, with a high near 66.

    High: 66 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 44.

    Low: 44 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 69.

    High: 69 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 47.

    Low: 47 °F

    Mostly Clear

Detailed Forecast

Overnight
Clear, with a low around 61. South wind 10 to 15 mph, with gusts as high as 20 mph.
Sunday
Sunny, with a high near 86. Breezy, with a south wind 10 to 20 mph, with gusts as high as 35 mph.
Sunday Night
A 50 percent chance of showers and thunderstorms, mainly after 1am. Increasing clouds, with a low around 59. South wind 5 to 10 mph becoming west after midnight. Winds could gust as high as 25 mph.
Monday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 70. North wind around 5 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Monday Night
Showers likely before 1am, then showers likely and possibly a thunderstorm between 1am and 4am, then showers likely after 4am. Mostly cloudy, with a low around 52. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.
Tuesday
Mostly sunny, with a high near 66.
Tuesday Night
Mostly clear, with a low around 44.
Wednesday
Sunny, with a high near 69.
Wednesday Night
Mostly clear, with a low around 47.
Thursday
Mostly sunny, with a high near 74.
Thursday Night
Partly cloudy, with a low around 56.
Friday
Mostly sunny, with a high near 75.
Friday Night
Partly cloudy, with a low around 50.
Saturday
Sunny, with a high near 74.
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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:
11:56 pm CDT Oct 4, 2025
Forecast Valid:
2am CDT Oct 5, 2025-6pm CDT Oct 11, 2025
 
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