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

55°F

13°C

Humidity 53%
Wind Speed SW 15 mph
Barometer 29.67 in (1004.7 mb)
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Wind Chill51°F (11°C)
Last update 9 Mar 8:53 am CDT
Extended Forecast for

Thornburg IA

  • Today

    Today: Sunny, with a high near 75. Southwest wind around 10 mph, with gusts as high as 20 mph.

    High: 75 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 44. Southwest wind around 5 mph.

    Low: 44 °F

    Clear

  • Tuesday

    Tuesday: A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 70. North wind 5 to 10 mph becoming southwest in the morning. Winds could gust as high as 20 mph.

    High: 70 °F

    Sunny then
    Slight Chance
    Showers

  • Tuesday Night

    Tuesday Night: Showers likely before 10pm, then showers likely and possibly a thunderstorm between 10pm and 1am, then rain likely after 1am. Mostly cloudy, with a low around 37. North wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.

    Low: 37 °F

    Showers
    Likely

  • Wednesday

    Wednesday: A 30 percent chance of rain before 1pm. Mostly cloudy, with a high near 48. Breezy.

    High: 48 °F

    Chance Rain
    and Breezy

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 26.

    Low: 26 °F

    Mostly Clear

  • Thursday

    Thursday: Partly sunny, with a high near 53. Breezy.

    High: 53 °F

    Mostly Sunny
    then Mostly
    Cloudy and
    Breezy

  • Thursday Night

    Thursday Night: A 40 percent chance of rain before 1am. Mostly cloudy, with a low around 38. Breezy.

    Low: 38 °F

    Chance Rain
    and Breezy

  • Friday

    Friday: Partly sunny, with a high near 52.

    High: 52 °F

    Partly Sunny

Detailed Forecast

Today
Sunny, with a high near 75. Southwest wind around 10 mph, with gusts as high as 20 mph.
Tonight
Clear, with a low around 44. Southwest wind around 5 mph.
Tuesday
A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 70. North wind 5 to 10 mph becoming southwest in the morning. Winds could gust as high as 20 mph.
Tuesday Night
Showers likely before 10pm, then showers likely and possibly a thunderstorm between 10pm and 1am, then rain likely after 1am. Mostly cloudy, with a low around 37. North wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.
Wednesday
A 30 percent chance of rain before 1pm. Mostly cloudy, with a high near 48. Breezy.
Wednesday Night
Mostly clear, with a low around 26.
Thursday
Partly sunny, with a high near 53. Breezy.
Thursday Night
A 40 percent chance of rain before 1am. Mostly cloudy, with a low around 38. Breezy.
Friday
Partly sunny, with a high near 52.
Friday Night
Mostly cloudy, with a low around 32.
Saturday
Mostly cloudy, with a high near 53.
Saturday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 35.
Sunday
A chance of rain and snow. Mostly cloudy, with a high near 49. Breezy. Chance of precipitation is 40%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Thornburg IA
 41.46°N 92.35°W (Elev. 902 ft)
Last Update:
8:06 am CDT Mar 9, 2026
Forecast Valid:
9am CDT Mar 9, 2026-6pm CDT Mar 15, 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