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.

Fair

36°F

2°C

Humidity 79%
Wind Speed Calm
Barometer 30.01 in (1017.3 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Last update 13 Feb 6:53 pm CST
Extended Forecast for

Thornton IA

  • Tonight

    Tonight: Increasing clouds, with a low around 31. Calm wind becoming south around 5 mph after midnight.

    Low: 31 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Mostly sunny, with a high near 55. South wind 5 to 10 mph.

    High: 55 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 32. Southwest wind around 6 mph becoming light and variable after midnight.

    Low: 32 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 58. Light and variable wind becoming west southwest 5 to 7 mph in the morning.

    High: 58 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 41. South wind 6 to 11 mph.

    Low: 41 °F

    Mostly Cloudy

  • Washington's Birthday

    Washington's Birthday: Mostly sunny, with a high near 60.

    High: 60 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 38.

    Low: 38 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of rain after noon. Mostly cloudy, with a high near 57. Breezy.

    High: 57 °F

    Breezy.
    Mostly Cloudy
    then Chance
    Rain

  • Tuesday Night

    Tuesday Night: Rain likely, mainly before midnight. Mostly cloudy, with a low around 39. Breezy. Chance of precipitation is 60%.

    Low: 39 °F

    Rain Likely
    and Breezy

Detailed Forecast

Tonight
Increasing clouds, with a low around 31. Calm wind becoming south around 5 mph after midnight.
Saturday
Mostly sunny, with a high near 55. South wind 5 to 10 mph.
Saturday Night
Mostly clear, with a low around 32. Southwest wind around 6 mph becoming light and variable after midnight.
Sunday
Sunny, with a high near 58. Light and variable wind becoming west southwest 5 to 7 mph in the morning.
Sunday Night
Mostly cloudy, with a low around 41. South wind 6 to 11 mph.
Washington's Birthday
Mostly sunny, with a high near 60.
Monday Night
Mostly cloudy, with a low around 38.
Tuesday
A 30 percent chance of rain after noon. Mostly cloudy, with a high near 57. Breezy.
Tuesday Night
Rain likely, mainly before midnight. Mostly cloudy, with a low around 39. Breezy. Chance of precipitation is 60%.
Wednesday
A 30 percent chance of rain before noon. Mostly sunny, with a high near 53. Breezy.
Wednesday Night
A 30 percent chance of rain. Partly cloudy, with a low around 30.
Thursday
A chance of rain and snow. Partly sunny, with a high near 42. Breezy. Chance of precipitation is 50%.
Thursday Night
A chance of rain and snow. Mostly cloudy, with a low around 22. Chance of precipitation is 40%.
Friday
Mostly sunny, with a high near 35.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Thornton IA
 42.95°N 93.37°W
Last Update:
7:37 pm CST Feb 13, 2026
Forecast Valid:
7pm CST Feb 13, 2026-6pm CST Feb 20, 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