National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Mason City Municipal Airport (KMCW)

Lat: 43.15°NLon: 93.33°WElev: 1188ft.

A Few Clouds

7°F

-14°C

Humidity 70%
Wind Speed N 17 mph
Barometer 30.54 in (1037.0 mb)
Dewpoint -1°F (-18°C)
Visibility 10.00 mi
Wind Chill-11°F (-24°C)
Last update 30 Jan 10:53 am CST
Extended Forecast for

Thornton IA

  • Today

    Today: Mostly sunny and cold, with a high near 8. Wind chill values as low as -15. North northeast wind 13 to 15 mph, with gusts as high as 24 mph.

    High: 8 °F

    Cold

  • Tonight

    Tonight: Mostly clear, with a low around -5. Wind chill values as low as -15. North wind 6 to 11 mph, with gusts as high as 21 mph.

    Low: -5 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 15. Wind chill values as low as -15. Northwest wind around 6 mph becoming light and variable.

    High: 15 °F

    Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of snow after midnight. Mostly cloudy, with a low around 8. Wind chill values as low as -5. South wind 6 to 14 mph. Little or no snow accumulation expected.

    Low: 8 °F

    Mostly Cloudy
    then Chance
    Snow

  • Sunday

    Sunday: Snow likely, mainly before noon. Mostly cloudy, with a high near 27. South wind 10 to 14 mph becoming west in the afternoon. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 27 °F

    Snow Likely
    then Chance
    Snow

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 10.

    Low: 10 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 21.

    High: 21 °F

    Partly Sunny

  • Monday Night

    Monday Night: A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 14.

    Low: 14 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 26.

    High: 26 °F

    Mostly Cloudy

Detailed Forecast

Today
Mostly sunny and cold, with a high near 8. Wind chill values as low as -15. North northeast wind 13 to 15 mph, with gusts as high as 24 mph.
Tonight
Mostly clear, with a low around -5. Wind chill values as low as -15. North wind 6 to 11 mph, with gusts as high as 21 mph.
Saturday
Sunny, with a high near 15. Wind chill values as low as -15. Northwest wind around 6 mph becoming light and variable.
Saturday Night
A 30 percent chance of snow after midnight. Mostly cloudy, with a low around 8. Wind chill values as low as -5. South wind 6 to 14 mph. Little or no snow accumulation expected.
Sunday
Snow likely, mainly before noon. Mostly cloudy, with a high near 27. South wind 10 to 14 mph becoming west in the afternoon. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Sunday Night
Mostly cloudy, with a low around 10.
Monday
Partly sunny, with a high near 21.
Monday Night
A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 14.
Tuesday
Mostly cloudy, with a high near 26.
Tuesday Night
A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 16.
Wednesday
Mostly cloudy, with a high near 24.
Wednesday Night
Mostly cloudy, with a low around 14.
Thursday
Partly sunny, with a high near 32.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Thornton IA
 42.95°N 93.37°W
Last Update:
11:14 am CST Jan 30, 2026
Forecast Valid:
11am CST Jan 30, 2026-6pm CST Feb 5, 2026
 
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Additional Resources

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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