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

35°F

2°C

Humidity 67%
Wind Speed NW 6 mph
Barometer 29.68 in (1005.4 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill30°F (-1°C)
Last update 24 Feb 11:53 pm CST
Extended Forecast for

Thornburg IA

  • Overnight

    Overnight: Partly cloudy, with a low around 21. Northwest wind around 5 mph.

    Low: 21 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 20 percent chance of snow after 5pm. Mostly sunny, with a high near 36. Northwest wind 5 to 10 mph.

    High: 36 °F

    Mostly Sunny
    then Slight
    Chance Snow

  • Wednesday Night

    Wednesday Night: Snow likely, mainly before 3am. Mostly cloudy, with a low around 22. North wind around 5 mph becoming southeast after midnight. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.

    Low: 22 °F

    Snow Likely
    then Chance
    Snow

  • Thursday

    Thursday: Mostly sunny, with a high near 48. South wind 5 to 10 mph becoming west in the afternoon. Winds could gust as high as 20 mph.

    High: 48 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 28.

    Low: 28 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 62.

    High: 62 °F

    Sunny

  • Friday Night

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

    Low: 26 °F

    Mostly Clear

  • Saturday

    Saturday: A 30 percent chance of snow before noon. Partly sunny, with a high near 39.

    High: 39 °F

    Chance Snow
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 17.

    Low: 17 °F

    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 21. Northwest wind around 5 mph.
Wednesday
A 20 percent chance of snow after 5pm. Mostly sunny, with a high near 36. Northwest wind 5 to 10 mph.
Wednesday Night
Snow likely, mainly before 3am. Mostly cloudy, with a low around 22. North wind around 5 mph becoming southeast after midnight. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.
Thursday
Mostly sunny, with a high near 48. South wind 5 to 10 mph becoming west in the afternoon. Winds could gust as high as 20 mph.
Thursday Night
Mostly clear, with a low around 28.
Friday
Sunny, with a high near 62.
Friday Night
Mostly clear, with a low around 26.
Saturday
A 30 percent chance of snow before noon. Partly sunny, with a high near 39.
Saturday Night
Partly cloudy, with a low around 17.
Sunday
A 40 percent chance of snow after noon. Mostly cloudy, with a high near 31.
Sunday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 18.
Monday
Mostly cloudy, with a high near 35.
Monday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 19.
Tuesday
A chance of rain and snow. Partly sunny, with a high near 38. 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:
12:26 am CST Feb 25, 2026
Forecast Valid:
12am CST Feb 25, 2026-6pm CST Mar 3, 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