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.

Fog/Mist

38°F

3°C

Humidity 93%
Wind Speed E 18 mph
Barometer 29.94 in (1014.5 mb)
Dewpoint 36°F (2°C)
Visibility 2.00 mi
Wind Chill28°F (-2°C)
Last update 3 Apr 4:53 pm CDT
Extended Forecast for

Thornton IA

  • This Afternoon

    This Afternoon: Showers and possibly a thunderstorm. High near 42. East wind around 15 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 42 °F

    Showers

  • Tonight

    Tonight: Showers and possibly a thunderstorm before 2am, then a slight chance of showers between 2am and 3am. Low around 32. Breezy, with an east northeast wind 13 to 17 mph becoming west northwest after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 32 °F

    Showers then
    Showers
    Likely and
    Breezy

  • Saturday

    Saturday: A chance of rain and snow showers between 1pm and 2pm, then a chance of rain showers after 2pm. Mostly cloudy, with a high near 42. Windy, with a west wind 20 to 26 mph, with gusts as high as 36 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

    High: 42 °F

    Windy. Mostly
    Cloudy then
    Chance
    Rain/Snow

  • Saturday Night

    Saturday Night: A 10 percent chance of showers before 7pm. Mostly cloudy, with a low around 28. Windy, with a west northwest wind 15 to 24 mph, with gusts as high as 32 mph.

    Low: 28 °F

    Slight Chance
    Showers and
    Windy

  • Sunday

    Sunday: Sunny, with a high near 54. Breezy, with a west northwest wind 11 to 18 mph, with gusts as high as 23 mph.

    High: 54 °F

    Mostly Sunny
    then Sunny
    and Breezy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 29.

    Low: 29 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 43. Breezy.

    High: 43 °F

    Mostly Sunny
    and Breezy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 22. Blustery.

    Low: 22 °F

    Partly Cloudy
    and Blustery
    then Mostly
    Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 44. Breezy.

    High: 44 °F

    Partly Sunny
    then Mostly
    Cloudy and
    Breezy

Detailed Forecast

This Afternoon
Showers and possibly a thunderstorm. High near 42. East wind around 15 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and possibly a thunderstorm before 2am, then a slight chance of showers between 2am and 3am. Low around 32. Breezy, with an east northeast wind 13 to 17 mph becoming west northwest after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Saturday
A chance of rain and snow showers between 1pm and 2pm, then a chance of rain showers after 2pm. Mostly cloudy, with a high near 42. Windy, with a west wind 20 to 26 mph, with gusts as high as 36 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Saturday Night
A 10 percent chance of showers before 7pm. Mostly cloudy, with a low around 28. Windy, with a west northwest wind 15 to 24 mph, with gusts as high as 32 mph.
Sunday
Sunny, with a high near 54. Breezy, with a west northwest wind 11 to 18 mph, with gusts as high as 23 mph.
Sunday Night
Partly cloudy, with a low around 29.
Monday
Mostly sunny, with a high near 43. Breezy.
Monday Night
Partly cloudy, with a low around 22. Blustery.
Tuesday
Partly sunny, with a high near 44. Breezy.
Tuesday Night
A chance of rain and snow showers before 1am, then a chance of rain showers. Mostly cloudy, with a low around 34. Windy. Chance of precipitation is 50%.
Wednesday
A 30 percent chance of showers. Partly sunny, with a high near 66. Windy.
Wednesday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 39. Windy.
Thursday
A 50 percent chance of showers. Mostly cloudy, with a high near 56. Breezy.
Thursday Night
Showers likely. Mostly cloudy, with a low around 36. Breezy. Chance of precipitation is 60%.
Friday
Showers likely. Partly sunny, with a high near 52. Breezy.
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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:
2:21 pm CDT Apr 3, 2026
Forecast Valid:
5pm CDT Apr 3, 2026-6pm CDT Apr 10, 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