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.

Overcast

32°F

0°C

Humidity 88%
Wind Speed N 13 mph
Barometer 30.32 in (1027.1 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Wind Chill22°F (-6°C)
Last update 10 Apr 7:53 am CDT
Extended Forecast for

Thornton IA

  • Today

    Today: Sunny, with a high near 54. North wind 7 to 10 mph.

    High: 54 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 35. Light and variable wind becoming southeast around 6 mph after midnight.

    Low: 35 °F

    Mostly Clear

  • Saturday

    Saturday: A chance of showers, then showers and possibly a thunderstorm after 1pm. High near 57. Breezy, with a southeast wind 9 to 14 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 57 °F

    Breezy.
    Chance
    Showers then
    Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm. Temperature falling to near 53 by 9pm, then rising to around 57 during the remainder of the night. Windy, with a south southeast wind 20 to 22 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 53 °F⇑

    Showers and
    Windy

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm before 10am, then showers likely between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 72. Windy, with a south southwest wind 22 to 26 mph, with gusts as high as 33 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 72 °F

    Showers
    Likely and
    Windy

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 7pm, then a slight chance of showers between 7pm and 1am. Partly cloudy, with a low around 56. Breezy. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 56 °F

    Chance
    T-storms and
    Breezy then
    Slight Chance
    Showers

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 80. Breezy.

    High: 80 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms and
    Breezy

  • Monday Night

    Monday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 57. Breezy. Chance of precipitation is 60%.

    Low: 57 °F

    Showers
    Likely and
    Breezy

  • Tuesday

    Tuesday: A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 79. Breezy. Chance of precipitation is 60%.

    High: 79 °F

    Chance
    Showers then
    Showers
    Likely and
    Breezy

Detailed Forecast

Today
Sunny, with a high near 54. North wind 7 to 10 mph.
Tonight
Mostly clear, with a low around 35. Light and variable wind becoming southeast around 6 mph after midnight.
Saturday
A chance of showers, then showers and possibly a thunderstorm after 1pm. High near 57. Breezy, with a southeast wind 9 to 14 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers and possibly a thunderstorm. Temperature falling to near 53 by 9pm, then rising to around 57 during the remainder of the night. Windy, with a south southeast wind 20 to 22 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Sunday
Showers likely and possibly a thunderstorm before 10am, then showers likely between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 72. Windy, with a south southwest wind 22 to 26 mph, with gusts as high as 33 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
A chance of showers and thunderstorms before 7pm, then a slight chance of showers between 7pm and 1am. Partly cloudy, with a low around 56. Breezy. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 80. Breezy.
Monday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 57. Breezy. Chance of precipitation is 60%.
Tuesday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 79. Breezy. Chance of precipitation is 60%.
Tuesday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 49. Breezy. Chance of precipitation is 60%.
Wednesday
A 30 percent chance of showers. Mostly sunny, with a high near 68. Breezy.
Wednesday Night
Partly cloudy, with a low around 49.
Thursday
Sunny, with a high near 75. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
Thornton IA
 42.95°N 93.37°W
Last Update:
5:31 am CDT Apr 10, 2026
Forecast Valid:
8am CDT Apr 10, 2026-6pm CDT Apr 16, 2026
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation