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

57°F

14°C

Humidity 42%
Wind Speed SW 13 mph
Barometer 29.89 in (1012.2 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 15 Feb 2:53 pm CST
Extended Forecast for

Thornton IA

  • This Afternoon

    This Afternoon: Sunny, with a high near 59. Southwest wind around 7 mph.

    High: 59 °F

    Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 42. South wind 6 to 15 mph, with gusts as high as 23 mph.

    Low: 42 °F

    Mostly Cloudy

  • Washington's Birthday

    Washington's Birthday: Mostly sunny, with a high near 56. West southwest wind 6 to 11 mph becoming east in the afternoon. Winds could gust as high as 18 mph.

    High: 56 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Patchy fog between 1am and 2am. Otherwise, mostly cloudy, with a low around 38. East southeast wind 6 to 9 mph.

    Low: 38 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Tuesday

    Tuesday: Partly sunny, with a high near 59. Windy, with an east southeast wind 10 to 15 mph increasing to 20 to 25 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 59 °F

    Partly Sunny
    and Windy

  • Tuesday Night

    Tuesday Night: A 50 percent chance of rain. Partly cloudy, with a low around 42. Windy. New precipitation amounts of less than a tenth of an inch possible.

    Low: 42 °F

    Chance Rain
    and Windy

  • Wednesday

    Wednesday: Sunny, with a high near 53. Windy.

    High: 53 °F

    Sunny and
    Windy

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 28.

    Low: 28 °F

    Mostly Clear

  • Thursday

    Thursday: A chance of rain and snow after noon. Partly sunny, with a high near 43. Breezy. Chance of precipitation is 30%.

    High: 43 °F

    Mostly Sunny
    then Chance
    Rain/Snow and
    Breezy

Detailed Forecast

This Afternoon
Sunny, with a high near 59. Southwest wind around 7 mph.
Tonight
Mostly cloudy, with a low around 42. South wind 6 to 15 mph, with gusts as high as 23 mph.
Washington's Birthday
Mostly sunny, with a high near 56. West southwest wind 6 to 11 mph becoming east in the afternoon. Winds could gust as high as 18 mph.
Monday Night
Patchy fog between 1am and 2am. Otherwise, mostly cloudy, with a low around 38. East southeast wind 6 to 9 mph.
Tuesday
Partly sunny, with a high near 59. Windy, with an east southeast wind 10 to 15 mph increasing to 20 to 25 mph in the afternoon. Winds could gust as high as 30 mph.
Tuesday Night
A 50 percent chance of rain. Partly cloudy, with a low around 42. Windy. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Sunny, with a high near 53. Windy.
Wednesday Night
Mostly clear, with a low around 28.
Thursday
A chance of rain and snow after noon. Partly sunny, with a high near 43. Breezy. Chance of precipitation is 30%.
Thursday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 21. Blustery.
Friday
Partly sunny, with a high near 30. Blustery.
Friday Night
Mostly cloudy, with a low around 16.
Saturday
Mostly sunny, with a high near 31.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Thornton IA
 42.95°N 93.4°W
Last Update:
3:16 pm CST Feb 15, 2026
Forecast Valid:
3pm CST Feb 15, 2026-6pm CST Feb 21, 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