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

Hazardous Weather Conditions

Current conditions at

Mason City Municipal Airport (KMCW)

Lat: 43.15°NLon: 93.33°WElev: 1188ft.

Overcast

17°F

-8°C

Humidity 84%
Wind Speed N 8 mph
Barometer 29.95 in (1015.8 mb)
Dewpoint 13°F (-11°C)
Visibility 10.00 mi
Wind Chill7°F (-14°C)
Last update 2 Jan 7:53 am CST
Extended Forecast for

Thornton IA

  • Today

    Today: Mostly cloudy, with a high near 19. Wind chill values as low as 5. North northeast wind 5 to 7 mph.

    High: 19 °F

    Mostly Cloudy

  • Tonight

    Tonight: A slight chance of snow between 2am and 4am. Mostly cloudy, with a low around 13. Northeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.

    Low: 13 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Saturday

    Saturday: Partly sunny, with a high near 24. Calm wind becoming west around 6 mph in the afternoon.

    High: 24 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 13. Light and variable wind.

    Low: 13 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 31. Breezy, with a south southeast wind 5 to 10 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 23 mph.

    High: 31 °F

    Partly Sunny
    then Mostly
    Cloudy and
    Breezy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 26.

    Low: 26 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 38.

    High: 38 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 26.

    Low: 26 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 39.

    High: 39 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly cloudy, with a high near 19. Wind chill values as low as 5. North northeast wind 5 to 7 mph.
Tonight
A slight chance of snow between 2am and 4am. Mostly cloudy, with a low around 13. Northeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Saturday
Partly sunny, with a high near 24. Calm wind becoming west around 6 mph in the afternoon.
Saturday Night
Partly cloudy, with a low around 13. Light and variable wind.
Sunday
Partly sunny, with a high near 31. Breezy, with a south southeast wind 5 to 10 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 23 mph.
Sunday Night
Partly cloudy, with a low around 26.
Monday
Partly sunny, with a high near 38.
Monday Night
Mostly cloudy, with a low around 26.
Tuesday
Mostly sunny, with a high near 39.
Tuesday Night
Partly cloudy, with a low around 26.
Wednesday
Sunny, with a high near 41.
Wednesday Night
Partly cloudy, with a low around 29.
Thursday
Mostly cloudy, with a high near 39.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Thornton IA
 42.95°N 93.37°W
Last Update:
8:02 am CST Jan 2, 2026
Forecast Valid:
8am CST Jan 2, 2026-6pm CST Jan 8, 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