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.

Fair and Breezy

38°F

3°C

Humidity 68%
Wind Speed SW 22 G 31 mph
Barometer 29.71 in (1006.4 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill27°F (-3°C)
Last update 8 Mar 4:53 am CDT
Extended Forecast for

Thornton IA

  • Today

    Today: Sunny, with a high near 61. Breezy, with a southwest wind 14 to 20 mph, with gusts as high as 30 mph.

    High: 61 °F

    Sunny then
    Sunny and
    Breezy

  • Tonight

    Tonight: Mostly clear, with a low around 41. Breezy, with a southwest wind 15 to 18 mph, with gusts as high as 25 mph.

    Low: 41 °F

    Mostly Clear
    and Breezy

  • Monday

    Monday: Sunny, with a high near 64. West southwest wind around 9 mph becoming northeast in the afternoon.

    High: 64 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 38. East southeast wind 7 to 9 mph becoming northeast in the evening.

    Low: 38 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 57. Northeast wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 57 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of rain before 1am, then a chance of rain and snow. Mostly cloudy, with a low around 31. Windy. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 31 °F

    Chance
    Rain/Snow and
    Windy

  • Wednesday

    Wednesday: A 40 percent chance of snow, mainly before 1pm. Partly sunny, with a high near 40. Windy.

    High: 40 °F

    Chance Snow
    and Windy

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 23. Blustery.

    Low: 23 °F

    Mostly Clear
    and Blustery
    then Mostly
    Clear

  • Thursday

    Thursday: Partly sunny, with a high near 50. Windy.

    High: 50 °F

    Mostly Sunny
    then Mostly
    Cloudy and
    Windy

Detailed Forecast

Today
Sunny, with a high near 61. Breezy, with a southwest wind 14 to 20 mph, with gusts as high as 30 mph.
Tonight
Mostly clear, with a low around 41. Breezy, with a southwest wind 15 to 18 mph, with gusts as high as 25 mph.
Monday
Sunny, with a high near 64. West southwest wind around 9 mph becoming northeast in the afternoon.
Monday Night
Mostly clear, with a low around 38. East southeast wind 7 to 9 mph becoming northeast in the evening.
Tuesday
Mostly sunny, with a high near 57. Northeast wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday Night
A slight chance of rain before 1am, then a chance of rain and snow. Mostly cloudy, with a low around 31. Windy. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday
A 40 percent chance of snow, mainly before 1pm. Partly sunny, with a high near 40. Windy.
Wednesday Night
Mostly clear, with a low around 23. Blustery.
Thursday
Partly sunny, with a high near 50. Windy.
Thursday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 36. Windy.
Friday
Mostly cloudy, with a high near 45. Windy.
Friday Night
Mostly cloudy, with a low around 26.
Saturday
Mostly cloudy, with a high near 40.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Thornton IA
 42.95°N 93.37°W
Last Update:
12:27 am CST Mar 8, 2026
Forecast Valid:
5am CDT Mar 8, 2026-6pm CDT Mar 14, 2026
 
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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