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

37°F

3°C

Humidity 96%
Wind Speed W 3 mph
Barometer 29.99 in (1016.0 mb)
Dewpoint 36°F (2°C)
Visibility 1.50 mi
Last update 5 Mar 8:53 am CST
Extended Forecast for

Thornton IA

  • Today

    Today: Areas of fog before noon. Otherwise, mostly cloudy, with a high near 53. South southeast wind 5 to 9 mph.

    High: 53 °F

    Areas Fog
    then Mostly
    Cloudy

  • Tonight

    Tonight: A chance of rain between 2am and 3am, then showers and possibly a thunderstorm after 3am. Low around 43. Southeast wind 8 to 14 mph, with gusts as high as 18 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 43 °F

    Mostly Cloudy
    then Showers

  • Friday

    Friday: Showers and possibly a thunderstorm before noon, then rain between noon and 3pm, then showers likely and possibly a thunderstorm after 3pm. High near 66. Southeast wind 13 to 15 mph becoming southwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    High: 66 °F

    Showers

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm before 9pm, then rain, mainly between 9pm and midnight. Low around 30. Blustery, with a west northwest wind 13 to 20 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 30 °F

    Showers and
    Breezy then
    Chance Rain
    and Blustery

  • Saturday

    Saturday: Mostly sunny, with a high near 45. Breezy, with a northwest wind 15 to 20 mph decreasing to 9 to 14 mph in the afternoon. Winds could gust as high as 23 mph.

    High: 45 °F

    Mostly Sunny
    and Breezy

  • Saturday Night

    Saturday Night: Clear, with a low around 34. Breezy.

    Low: 34 °F

    Clear then
    Mostly Clear
    and Breezy

  • Sunday

    Sunday: Sunny, with a high near 62. Breezy.

    High: 62 °F

    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 44.

    Low: 44 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 67.

    High: 67 °F

    Sunny

Detailed Forecast

Today
Areas of fog before noon. Otherwise, mostly cloudy, with a high near 53. South southeast wind 5 to 9 mph.
Tonight
A chance of rain between 2am and 3am, then showers and possibly a thunderstorm after 3am. Low around 43. Southeast wind 8 to 14 mph, with gusts as high as 18 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Friday
Showers and possibly a thunderstorm before noon, then rain between noon and 3pm, then showers likely and possibly a thunderstorm after 3pm. High near 66. Southeast wind 13 to 15 mph becoming southwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Friday Night
Showers and possibly a thunderstorm before 9pm, then rain, mainly between 9pm and midnight. Low around 30. Blustery, with a west northwest wind 13 to 20 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Saturday
Mostly sunny, with a high near 45. Breezy, with a northwest wind 15 to 20 mph decreasing to 9 to 14 mph in the afternoon. Winds could gust as high as 23 mph.
Saturday Night
Clear, with a low around 34. Breezy.
Sunday
Sunny, with a high near 62. Breezy.
Sunday Night
Mostly clear, with a low around 44.
Monday
Sunny, with a high near 67.
Monday Night
Mostly clear, with a low around 41.
Tuesday
A 40 percent chance of rain. Mostly sunny, with a high near 61. Breezy.
Tuesday Night
A chance of rain and snow. Mostly cloudy, with a low around 27. Blustery. Chance of precipitation is 40%.
Wednesday
A 30 percent chance of snow. Mostly sunny, with a high near 42. 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:
8:12 am CST Mar 5, 2026
Forecast Valid:
9am CST Mar 5, 2026-6pm CDT Mar 11, 2026
 
Forecast Discussion
 
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Additional Resources

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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