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.

A Few Clouds

29°F

-2°C

Humidity 92%
Wind Speed S 7 mph
Barometer 30.14 in (1021.6 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill22°F (-6°C)
Last update 12 Mar 8:53 am CDT
Extended Forecast for

Thornton IA

High Wind Warning March 12, 10:00pm until March 13, 10:00am
Click here for hazard details and duration
High Wind Warning

  • Today

    Today: A slight chance of rain before 3pm, then a chance of rain after 4pm. Mostly cloudy, with a high near 50. Windy, with a south southwest wind 13 to 18 mph increasing to 24 to 29 mph in the afternoon. Winds could gust as high as 39 mph. Chance of precipitation is 30%.

    High: 50 °F

    Mostly Cloudy
    and Breezy
    then Chance
    Rain and
    Windy

  • Tonight

    Tonight: Rain likely, mainly before midnight. Cloudy, then gradually becoming partly cloudy, with a low around 28. Very windy, with a south southwest wind 24 to 29 mph becoming west northwest 36 to 41 mph after midnight. Winds could gust as high as 55 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 28 °F

    Rain Likely
    and Windy
    then Slight
    Chance Rain
    and Very
    Windy

  • Friday

    Friday: Partly sunny, with a high near 40. Very windy, with a northwest wind 34 to 39 mph decreasing to 23 to 28 mph in the afternoon. Winds could gust as high as 49 mph.

    High: 40 °F

    Partly Sunny
    and Very
    Windy

  • Friday Night

    Friday Night: A 40 percent chance of snow after 1am. Mostly cloudy, with a low around 28. Northwest wind 5 to 10 mph becoming light and variable in the evening. New snow accumulation of less than one inch possible.

    Low: 28 °F

    Mostly Cloudy
    then Chance
    Snow

  • Saturday

    Saturday: A 20 percent chance of snow after 1pm. Cloudy, with a high near 38. East southeast wind 6 to 13 mph.

    High: 38 °F

    Cloudy then
    Slight Chance
    Snow

  • Saturday Night

    Saturday Night: Snow likely before 10pm, then snow, possibly mixed with rain between 10pm and 4am, then snow after 4am. The snow could be heavy at times. Low around 27. Windy. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 27 °F

    Rain/Snow
    Likely and
    Breezy then
    Rain/Snow and
    Windy

  • Sunday

    Sunday: Snow. The snow could be heavy at times. High near 33. Windy. Chance of precipitation is 90%.

    High: 33 °F

    Heavy Snow
    and Windy

  • Sunday Night

    Sunday Night: A 40 percent chance of snow before 1am. Mostly cloudy, with a low around 3. Very windy.

    Low: 3 °F

    Chance Snow
    and Very
    Windy

  • Monday

    Monday: Mostly sunny, with a high near 17. Windy.

    High: 17 °F

    Mostly Sunny
    and Windy

Detailed Forecast

Today
A slight chance of rain before 3pm, then a chance of rain after 4pm. Mostly cloudy, with a high near 50. Windy, with a south southwest wind 13 to 18 mph increasing to 24 to 29 mph in the afternoon. Winds could gust as high as 39 mph. Chance of precipitation is 30%.
Tonight
Rain likely, mainly before midnight. Cloudy, then gradually becoming partly cloudy, with a low around 28. Very windy, with a south southwest wind 24 to 29 mph becoming west northwest 36 to 41 mph after midnight. Winds could gust as high as 55 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Partly sunny, with a high near 40. Very windy, with a northwest wind 34 to 39 mph decreasing to 23 to 28 mph in the afternoon. Winds could gust as high as 49 mph.
Friday Night
A 40 percent chance of snow after 1am. Mostly cloudy, with a low around 28. Northwest wind 5 to 10 mph becoming light and variable in the evening. New snow accumulation of less than one inch possible.
Saturday
A 20 percent chance of snow after 1pm. Cloudy, with a high near 38. East southeast wind 6 to 13 mph.
Saturday Night
Snow likely before 10pm, then snow, possibly mixed with rain between 10pm and 4am, then snow after 4am. The snow could be heavy at times. Low around 27. Windy. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Sunday
Snow. The snow could be heavy at times. High near 33. Windy. Chance of precipitation is 90%.
Sunday Night
A 40 percent chance of snow before 1am. Mostly cloudy, with a low around 3. Very windy.
Monday
Mostly sunny, with a high near 17. Windy.
Monday Night
Partly cloudy, with a low around -1. Blustery.
Tuesday
Mostly cloudy, with a high near 28.
Tuesday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 14.
Wednesday
Mostly sunny, with a high near 37.
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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:
6:56 am CDT Mar 12, 2026
Forecast Valid:
9am CDT Mar 12, 2026-6pm CDT Mar 18, 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