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

48°F

9°C

Humidity 68%
Wind Speed W 13 mph
Barometer 29.56 in (1000.5 mb)
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Wind Chill43°F (6°C)
Last update 9 Mar 6:53 am CDT
Extended Forecast for

Thornton IA

  • Today

    Today: Sunny, with a high near 62. Southwest wind 8 to 10 mph becoming northeast in the afternoon.

    High: 62 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 36. Northeast wind 6 to 9 mph.

    Low: 36 °F

    Mostly Clear

  • Tuesday

    Tuesday: Increasing clouds, with a high near 55. Northeast wind 11 to 15 mph, with gusts as high as 20 mph.

    High: 55 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: A chance of rain after 1am, mixing with snow after 4am. Mostly cloudy, with a low around 31. Blustery, with a north northeast wind around 16 mph, with gusts as high as 20 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.

    Low: 31 °F

    Blustery.
    Mostly Cloudy
    then Chance
    Rain/Snow

  • Wednesday

    Wednesday: A 40 percent chance of snow before 1pm. Partly sunny, with a high near 42. Windy, with a north northwest wind 18 to 22 mph, with gusts as high as 26 mph. New snow accumulation of less than a half inch possible.

    High: 42 °F

    Chance Snow
    and Windy

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 25.

    Low: 25 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly cloudy, with a high near 52. Windy.

    High: 52 °F

    Mostly Cloudy
    and Windy

  • Thursday Night

    Thursday Night: Rain likely before 1am, then a slight chance of rain and snow. Mostly cloudy, with a low around 31. Windy. Chance of precipitation is 60%.

    Low: 31 °F

    Windy. Rain
    Likely then
    Rain/Snow
    Likely

  • Friday

    Friday: Partly sunny, with a high near 45. Windy.

    High: 45 °F

    Partly Sunny
    and Windy

Detailed Forecast

Today
Sunny, with a high near 62. Southwest wind 8 to 10 mph becoming northeast in the afternoon.
Tonight
Mostly clear, with a low around 36. Northeast wind 6 to 9 mph.
Tuesday
Increasing clouds, with a high near 55. Northeast wind 11 to 15 mph, with gusts as high as 20 mph.
Tuesday Night
A chance of rain after 1am, mixing with snow after 4am. Mostly cloudy, with a low around 31. Blustery, with a north northeast wind around 16 mph, with gusts as high as 20 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.
Wednesday
A 40 percent chance of snow before 1pm. Partly sunny, with a high near 42. Windy, with a north northwest wind 18 to 22 mph, with gusts as high as 26 mph. New snow accumulation of less than a half inch possible.
Wednesday Night
Mostly clear, with a low around 25.
Thursday
Mostly cloudy, with a high near 52. Windy.
Thursday Night
Rain likely before 1am, then a slight chance of rain and snow. Mostly cloudy, with a low around 31. Windy. Chance of precipitation is 60%.
Friday
Partly sunny, with a high near 45. Windy.
Friday Night
A 40 percent chance of snow after 1am. Mostly cloudy, with a low around 29.
Saturday
Mostly cloudy, with a high near 46.
Saturday Night
Rain and snow likely. Cloudy, with a low around 29. Breezy. Chance of precipitation is 60%.
Sunday
A 40 percent chance of snow. Mostly cloudy, with a high near 39. Windy.
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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:
6:56 am CDT Mar 9, 2026
Forecast Valid:
7am CDT Mar 9, 2026-6pm CDT Mar 15, 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