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.

Overcast

35°F

2°C

Humidity 89%
Wind Speed NE 14 mph
Barometer 29.99 in (1016.2 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Wind Chill26°F (-3°C)
Last update 3 Apr 9:53 am CDT
Extended Forecast for

Thornton IA

  • Today

    Today: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 11am. High near 46. East wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 46 °F

    Showers

  • Tonight

    Tonight: Showers and possibly a thunderstorm before 1am, then a slight chance of showers between 1am and 3am. Low around 32. Breezy, with an east northeast wind 13 to 17 mph becoming west after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 32 °F

    Showers then
    Chance
    Showers and
    Breezy

  • Saturday

    Saturday: A chance of snow showers between 1pm and 4pm, then a chance of rain showers after 4pm. Mostly cloudy, with a high near 41. Windy, with a west wind 20 to 26 mph, with gusts as high as 33 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

    High: 41 °F

    Windy. Mostly
    Cloudy then
    Chance
    Rain/Snow

  • Saturday Night

    Saturday Night: A 30 percent chance of showers before 7pm. Mostly cloudy, with a low around 28. Windy, with a west northwest wind 14 to 24 mph, with gusts as high as 30 mph.

    Low: 28 °F

    Chance
    Showers and
    Windy then
    Mostly Cloudy
    and Blustery

  • Sunday

    Sunday: Mostly sunny, with a high near 53. Breezy, with a west northwest wind 11 to 18 mph, with gusts as high as 23 mph.

    High: 53 °F

    Mostly Sunny
    then Sunny
    and Breezy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 30. Blustery.

    Low: 30 °F

    Mostly Clear
    and Blustery
    then Partly
    Cloudy

  • Monday

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

    High: 43 °F

    Mostly Sunny
    and Windy

  • Monday Night

    Monday Night: Mostly clear, with a low around 20. Blustery.

    Low: 20 °F

    Mostly Clear
    and Blustery
    then Partly
    Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 46. Breezy.

    High: 46 °F

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

Detailed Forecast

Today
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 11am. High near 46. East wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
Showers and possibly a thunderstorm before 1am, then a slight chance of showers between 1am and 3am. Low around 32. Breezy, with an east northeast wind 13 to 17 mph becoming west after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Saturday
A chance of snow showers between 1pm and 4pm, then a chance of rain showers after 4pm. Mostly cloudy, with a high near 41. Windy, with a west wind 20 to 26 mph, with gusts as high as 33 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Saturday Night
A 30 percent chance of showers before 7pm. Mostly cloudy, with a low around 28. Windy, with a west northwest wind 14 to 24 mph, with gusts as high as 30 mph.
Sunday
Mostly sunny, with a high near 53. 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 30. Blustery.
Monday
Mostly sunny, with a high near 43. Windy.
Monday Night
Mostly clear, with a low around 20. Blustery.
Tuesday
Mostly sunny, with a high near 46. Breezy.
Tuesday Night
A chance of rain and snow showers. Mostly cloudy, with a low around 35. Windy. Chance of precipitation is 30%.
Wednesday
Partly sunny, with a high near 68. Windy.
Wednesday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 40. Windy.
Thursday
A 50 percent chance of showers. Mostly cloudy, with a high near 54. Windy.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Thornton IA
 42.95°N 93.37°W
Last Update:
9:32 am CDT Apr 3, 2026
Forecast Valid:
10am CDT Apr 3, 2026-6pm CDT Apr 9, 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