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.

Rain and Breezy

44°F

7°C

Humidity 83%
Wind Speed S 22 G 35 mph
Barometer 29.54 in (1000.9 mb)
Dewpoint 39°F (4°C)
Visibility 7.00 mi
Wind Chill35°F (2°C)
Last update 12 Mar 8:53 pm CDT
Extended Forecast for

Thornton IA

Winter Storm Watch March 14, 10:00pm until March 16, 10:00am
High Wind Warning March 12, 10:00pm until March 13, 10:00am
Click here for hazard details and duration
Winter Storm Watch
High Wind Warning

  • Tonight

    Tonight: Rain likely, mainly before midnight. Cloudy early, then becoming partly cloudy, with a low around 28. Very windy, with a southwest wind 18 to 28 mph becoming west northwest 30 to 40 mph after midnight. Winds could gust as high as 60 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 39. Very windy, with a northwest wind 32 to 37 mph decreasing to 20 to 25 mph in the afternoon. Winds could gust as high as 55 mph.

    High: 39 °F

    Partly Sunny
    and Very
    Windy

  • Friday Night

    Friday Night: A 50 percent chance of snow, mainly after 1am. Increasing clouds, with a low around 26. Northwest wind 5 to 10 mph becoming light and variable in the evening. New snow accumulation of less than a half inch possible.

    Low: 26 °F

    Slight Chance
    Snow then
    Chance Snow

  • Saturday

    Saturday: A 20 percent chance of snow. Cloudy, with a high near 39. East southeast wind 6 to 13 mph.

    High: 39 °F

    Slight Chance
    Snow

  • Saturday Night

    Saturday Night: Rain and snow, becoming all snow after 4am. The snow could be heavy at times. Patchy blowing snow after 4am. Low around 28. Windy, with an east wind 14 to 21 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

    Low: 28 °F

    Rain/Snow and
    Patchy
    Blowing Snow

  • Sunday

    Sunday: Snow. The snow could be heavy at times. Widespread blowing snow, mainly after 9am. High near 32. Windy. Chance of precipitation is 100%.

    High: 32 °F

    Heavy Snow
    and Blowing
    Snow

  • Sunday Night

    Sunday Night: A 40 percent chance of snow, mainly before 1am. Widespread blowing snow, mainly before 1am. Mostly cloudy, with a low around 4. Very windy.

    Low: 4 °F

    Chance Snow
    and Blowing
    Snow

  • Monday

    Monday: Mostly sunny, with a high near 12. Windy.

    High: 12 °F

    Mostly Sunny
    and Windy

  • Monday Night

    Monday Night: Mostly clear, with a low around -3. Windy.

    Low: -3 °F

    Mostly Clear
    and Windy
    then Mostly
    Clear

Detailed Forecast

Tonight
Rain likely, mainly before midnight. Cloudy early, then becoming partly cloudy, with a low around 28. Very windy, with a southwest wind 18 to 28 mph becoming west northwest 30 to 40 mph after midnight. Winds could gust as high as 60 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 39. Very windy, with a northwest wind 32 to 37 mph decreasing to 20 to 25 mph in the afternoon. Winds could gust as high as 55 mph.
Friday Night
A 50 percent chance of snow, mainly after 1am. Increasing clouds, with a low around 26. Northwest wind 5 to 10 mph becoming light and variable in the evening. New snow accumulation of less than a half inch possible.
Saturday
A 20 percent chance of snow. Cloudy, with a high near 39. East southeast wind 6 to 13 mph.
Saturday Night
Rain and snow, becoming all snow after 4am. The snow could be heavy at times. Patchy blowing snow after 4am. Low around 28. Windy, with an east wind 14 to 21 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
Sunday
Snow. The snow could be heavy at times. Widespread blowing snow, mainly after 9am. High near 32. Windy. Chance of precipitation is 100%.
Sunday Night
A 40 percent chance of snow, mainly before 1am. Widespread blowing snow, mainly before 1am. Mostly cloudy, with a low around 4. Very windy.
Monday
Mostly sunny, with a high near 12. Windy.
Monday Night
Mostly clear, with a low around -3. Windy.
Tuesday
Partly sunny, with a high near 20.
Tuesday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 14.
Wednesday
Mostly sunny, with a high near 36.
Wednesday Night
Mostly cloudy, with a low around 26.
Thursday
Mostly sunny, with a high near 47.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Thornton IA
 42.95°N 93.37°W
Last Update:
6:07 pm CDT Mar 12, 2026
Forecast Valid:
9pm CDT Mar 12, 2026-6pm CDT Mar 19, 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