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.

Fair

18°F

-8°C

Humidity 88%
Wind Speed SE 3 mph
Barometer 30.29 in (1027.2 mb)
Dewpoint 15°F (-9°C)
Visibility 10.00 mi
Last update 2 Mar 3:53 am CST
Extended Forecast for

Thornton IA

  • Overnight

    Overnight: Partly cloudy, with a low around 20. Calm wind becoming southeast around 5 mph.

    Low: 20 °F

    Partly Cloudy

  • Monday

    Monday: Increasing clouds, with a high near 38. South wind 6 to 10 mph.

    High: 38 °F

    Increasing
    Clouds

  • Monday Night

    Monday Night: Freezing rain likely, possibly mixed with drizzle, mainly between 10pm and 11pm. Cloudy, with a low around 32. South southeast wind 5 to 7 mph. Chance of precipitation is 60%. Little or no ice accumulation expected.

    Low: 32 °F


    Drizzle/Freezing
    Rain Likely

  • Tuesday

    Tuesday: A slight chance of drizzle or freezing rain before 9am, then a slight chance of drizzle between 9am and 11am. Mostly cloudy, with a high near 42. East northeast wind 3 to 6 mph. Chance of precipitation is 20%.

    High: 42 °F

    Slight Chance
    Drizzle/Freezing
    Rain then
    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A 20 percent chance of rain after midnight. Mostly cloudy, with a low around 31. East northeast wind 3 to 6 mph.

    Low: 31 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Wednesday

    Wednesday: A 30 percent chance of rain. Mostly sunny, with a high near 45. New precipitation amounts of less than a tenth of an inch possible.

    High: 45 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: A 30 percent chance of rain, mainly after midnight. Mostly cloudy, with a low around 35.

    Low: 35 °F

    Chance Rain

  • Thursday

    Thursday: A 20 percent chance of rain before noon. Partly sunny, with a high near 56.

    High: 56 °F

    Slight Chance
    Rain then
    Mostly Sunny

  • Thursday Night

    Thursday Night: A 50 percent chance of rain after midnight. Mostly cloudy, with a low around 41.

    Low: 41 °F

    Partly Cloudy
    then Chance
    Rain

Detailed Forecast

Overnight
Partly cloudy, with a low around 20. Calm wind becoming southeast around 5 mph.
Monday
Increasing clouds, with a high near 38. South wind 6 to 10 mph.
Monday Night
Freezing rain likely, possibly mixed with drizzle, mainly between 10pm and 11pm. Cloudy, with a low around 32. South southeast wind 5 to 7 mph. Chance of precipitation is 60%. Little or no ice accumulation expected.
Tuesday
A slight chance of drizzle or freezing rain before 9am, then a slight chance of drizzle between 9am and 11am. Mostly cloudy, with a high near 42. East northeast wind 3 to 6 mph. Chance of precipitation is 20%.
Tuesday Night
A 20 percent chance of rain after midnight. Mostly cloudy, with a low around 31. East northeast wind 3 to 6 mph.
Wednesday
A 30 percent chance of rain. Mostly sunny, with a high near 45. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
A 30 percent chance of rain, mainly after midnight. Mostly cloudy, with a low around 35.
Thursday
A 20 percent chance of rain before noon. Partly sunny, with a high near 56.
Thursday Night
A 50 percent chance of rain after midnight. Mostly cloudy, with a low around 41.
Friday
Rain. High near 60. Breezy. Chance of precipitation is 80%.
Friday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 32.
Saturday
Mostly sunny, with a high near 53.
Saturday Night
Mostly clear, with a low around 34.
Sunday
Sunny, with a high near 60. 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:
2:27 am CST Mar 2, 2026
Forecast Valid:
3am CST Mar 2, 2026-6pm CDT Mar 8, 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