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.

Fair

70°F

21°C

Humidity 46%
Wind Speed SE 10 mph
Barometer 29.75 in (1006.8 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 30 Mar 11:53 am CDT
Extended Forecast for

Thornton IA

  • This Afternoon

    This Afternoon: Increasing clouds, with a high near 81. South southwest wind 8 to 15 mph, with gusts as high as 22 mph.

    High: 81 °F

    Increasing
    Clouds

  • Tonight

    Tonight: A slight chance of showers, then a chance of showers and thunderstorms after 4am. Mostly cloudy, then gradually becoming mostly clear, with a low around 47. West southwest wind 6 to 11 mph becoming south after midnight. Chance of precipitation is 30%.

    Low: 47 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Tuesday

    Tuesday: A slight chance of showers and thunderstorms. Partly sunny, with a steady temperature around 54. Windy, with a west wind 11 to 16 mph becoming north 18 to 23 mph in the morning. Winds could gust as high as 32 mph. Chance of precipitation is 20%.

    High: 54 °F

    Windy. Slight
    Chance
    T-storms then
    Slight Chance
    Showers

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 31. Blustery, with a north wind 14 to 20 mph, with gusts as high as 24 mph.

    Low: 31 °F

    Mostly Cloudy
    and Blustery
    then Mostly
    Cloudy

  • Wednesday

    Wednesday: A chance of rain and snow showers after 1pm. Mostly cloudy, with a high near 42. Breezy, with an east wind 14 to 17 mph, with gusts as high as 22 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.

    High: 42 °F

    Mostly Cloudy
    then Chance
    Rain/Snow and
    Breezy

  • Wednesday Night

    Wednesday Night: Rain and snow showers, becoming all snow after 1am. Low around 30. Blustery. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 30 °F

    Rain/Snow and
    Blustery

  • Thursday

    Thursday: Rain or freezing rain, becoming all rain after 1pm. High near 39. Breezy. Chance of precipitation is 80%.

    High: 39 °F

    Rain/Freezing
    Rain and
    Breezy

  • Thursday Night

    Thursday Night: A 30 percent chance of rain before 1am. Mostly cloudy, with a low around 30.

    Low: 30 °F

    Chance Rain

  • Friday

    Friday: A 40 percent chance of rain after 1pm. Mostly cloudy, with a high near 47. Breezy.

    High: 47 °F

    Mostly Cloudy
    then Chance
    Rain and
    Breezy

Detailed Forecast

This Afternoon
Increasing clouds, with a high near 81. South southwest wind 8 to 15 mph, with gusts as high as 22 mph.
Tonight
A slight chance of showers, then a chance of showers and thunderstorms after 4am. Mostly cloudy, then gradually becoming mostly clear, with a low around 47. West southwest wind 6 to 11 mph becoming south after midnight. Chance of precipitation is 30%.
Tuesday
A slight chance of showers and thunderstorms. Partly sunny, with a steady temperature around 54. Windy, with a west wind 11 to 16 mph becoming north 18 to 23 mph in the morning. Winds could gust as high as 32 mph. Chance of precipitation is 20%.
Tuesday Night
Mostly cloudy, with a low around 31. Blustery, with a north wind 14 to 20 mph, with gusts as high as 24 mph.
Wednesday
A chance of rain and snow showers after 1pm. Mostly cloudy, with a high near 42. Breezy, with an east wind 14 to 17 mph, with gusts as high as 22 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.
Wednesday Night
Rain and snow showers, becoming all snow after 1am. Low around 30. Blustery. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Thursday
Rain or freezing rain, becoming all rain after 1pm. High near 39. Breezy. Chance of precipitation is 80%.
Thursday Night
A 30 percent chance of rain before 1am. Mostly cloudy, with a low around 30.
Friday
A 40 percent chance of rain after 1pm. Mostly cloudy, with a high near 47. Breezy.
Friday Night
Rain likely and possibly a thunderstorm. Mostly cloudy, with a low around 35. Breezy. Chance of precipitation is 70%.
Saturday
A chance of rain and snow. Mostly cloudy, with a high near 46. Windy. Chance of precipitation is 50%.
Saturday Night
Mostly cloudy, with a low around 28. Windy.
Sunday
Mostly sunny, with a high near 46. Windy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Thornton IA
 42.95°N 93.37°W
Last Update:
11:02 am CDT Mar 30, 2026
Forecast Valid:
12pm CDT Mar 30, 2026-6pm CDT Apr 5, 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