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.

Mostly Cloudy

28°F

-2°C

Humidity 44%
Wind Speed W 7 mph
Barometer 29.75 in (1008.5 mb)
Dewpoint 9°F (-13°C)
Visibility 10.00 mi
Wind Chill21°F (-6°C)
Last update 25 Feb 3:53 pm CST
Extended Forecast for

Thornton IA

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 27. West northwest wind 3 to 5 mph.

    High: 27 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 20. Calm wind becoming south southwest 5 to 7 mph after midnight.

    Low: 20 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 41. West southwest wind 8 to 14 mph, with gusts as high as 18 mph.

    High: 41 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 29. West southwest wind 8 to 11 mph.

    Low: 29 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 53. Breezy, with a southwest wind 11 to 16 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.

    High: 53 °F

    Sunny then
    Mostly Sunny
    and Breezy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 21.

    Low: 21 °F

    Partly Cloudy

  • Saturday

    Saturday: A 50 percent chance of snow. Mostly cloudy, with a high near 28. Blustery.

    High: 28 °F

    Chance Snow
    and Blustery

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 8.

    Low: 8 °F

    Partly Cloudy

  • Sunday

    Sunday: A 30 percent chance of snow after noon. Partly sunny, with a high near 22.

    High: 22 °F

    Partly Sunny
    then Chance
    Snow

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 27. West northwest wind 3 to 5 mph.
Tonight
Mostly cloudy, with a low around 20. Calm wind becoming south southwest 5 to 7 mph after midnight.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 41. West southwest wind 8 to 14 mph, with gusts as high as 18 mph.
Thursday Night
Mostly clear, with a low around 29. West southwest wind 8 to 11 mph.
Friday
Sunny, with a high near 53. Breezy, with a southwest wind 11 to 16 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.
Friday Night
Partly cloudy, with a low around 21.
Saturday
A 50 percent chance of snow. Mostly cloudy, with a high near 28. Blustery.
Saturday Night
Partly cloudy, with a low around 8.
Sunday
A 30 percent chance of snow after noon. Partly sunny, with a high near 22.
Sunday Night
A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 13.
Monday
Mostly sunny, with a high near 31.
Monday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 19.
Tuesday
Partly sunny, with a high near 37.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Thornton IA
 42.95°N 93.37°W
Last Update:
1:12 pm CST Feb 25, 2026
Forecast Valid:
4pm 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