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.

Overcast

9°F

-13°C

Humidity 88%
Wind Speed NW 3 mph
Barometer 30.38 in (1030.9 mb)
Dewpoint 6°F (-14°C)
Visibility 10.00 mi
Last update 4 Feb 6:53 am CST
Extended Forecast for

Thornton IA

  • Today

    Today: Mostly cloudy, with a high near 25. Wind chill values as low as 10. Calm wind becoming northwest 5 to 7 mph in the afternoon.

    High: 25 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 15. Light and variable wind becoming south southwest 5 to 10 mph after midnight.

    Low: 15 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 37. Southwest wind 9 to 13 mph becoming northwest in the afternoon.

    High: 37 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a steady temperature around 32. Windy, with a west wind 8 to 13 mph increasing to 16 to 21 mph after midnight. Winds could gust as high as 26 mph.

    Low: 32 °F

    Partly Cloudy
    then Partly
    Cloudy and
    Windy

  • Friday

    Friday: Mostly sunny, with a high near 36. Windy, with a north northwest wind 15 to 23 mph, with gusts as high as 29 mph.

    High: 36 °F

    Mostly Sunny
    and Windy

  • Friday Night

    Friday Night: Mostly clear, with a low around 13.

    Low: 13 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 33.

    High: 33 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 23.

    Low: 23 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 37.

    High: 37 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly cloudy, with a high near 25. Wind chill values as low as 10. Calm wind becoming northwest 5 to 7 mph in the afternoon.
Tonight
Mostly cloudy, with a low around 15. Light and variable wind becoming south southwest 5 to 10 mph after midnight.
Thursday
Partly sunny, with a high near 37. Southwest wind 9 to 13 mph becoming northwest in the afternoon.
Thursday Night
Partly cloudy, with a steady temperature around 32. Windy, with a west wind 8 to 13 mph increasing to 16 to 21 mph after midnight. Winds could gust as high as 26 mph.
Friday
Mostly sunny, with a high near 36. Windy, with a north northwest wind 15 to 23 mph, with gusts as high as 29 mph.
Friday Night
Mostly clear, with a low around 13.
Saturday
Mostly sunny, with a high near 33.
Saturday Night
Mostly cloudy, with a low around 23.
Sunday
Mostly sunny, with a high near 37.
Sunday Night
Partly cloudy, with a low around 25.
Monday
Mostly sunny, with a high near 47.
Monday Night
Partly cloudy, with a low around 30.
Tuesday
Mostly sunny, with a high near 44.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Thornton IA
 42.95°N 93.37°W
Last Update:
6:36 am CST Feb 4, 2026
Forecast Valid:
7am CST Feb 4, 2026-6pm CST Feb 10, 2026
 
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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