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.

Overcast

32°F

0°C

Humidity 88%
Wind Speed W 15 mph
Barometer 29.51 in (1000.3 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Wind Chill22°F (-6°C)
Last update 16 Jan 6:53 am CST
Extended Forecast for

Thornton IA

Winter Weather Advisory January 16, 07:22am until January 16, 09:00pm
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory January 16, 07:22am until January 16, 09:00pm

    NOW until 9:00pm Fri

    Winter Weather Advisory

  • Today

    High: 31 °F⇓

    Snow Showers
    Likely and
    Patchy
    Blowing Snow

  • Tonight

    Tonight: Scattered snow showers, mainly before 9pm. Patchy blowing snow before 9pm. Mostly cloudy, with a low around 4. Wind chill values as low as -15. Windy, with a northwest wind 21 to 24 mph, with gusts as high as 30 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

    Low: 4 °F

    Scattered
    Snow Showers
    and Patchy
    Blowing Snow

  • Saturday

    Saturday: Mostly cloudy and cold, with a high near 9. Wind chill values as low as -15. Windy, with a northwest wind 20 to 25 mph, with gusts as high as 30 mph.

    High: 9 °F

    Cold and
    Windy

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 0. Wind chill values as low as -15. Blustery, with a northwest wind 8 to 17 mph becoming southwest after midnight. Winds could gust as high as 22 mph.

    Low: 0 °F

    Partly Cloudy
    and Blustery
    then Partly
    Cloudy

  • Sunday

    Sunday: A 20 percent chance of snow. Partly sunny, with a high near 24. Windy, with a southwest wind 10 to 15 mph becoming northwest 18 to 23 mph in the afternoon. Winds could gust as high as 28 mph.

    High: 24 °F

    Slight Chance
    Snow and
    Windy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around -3. Windy.

    Low: -3 °F

    Mostly Cloudy
    and Windy

  • M.L.King Day

    M.L.King Day: Mostly sunny and cold, with a high near 9. Windy.

    High: 9 °F

    Cold and
    Windy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 0.

    Low: 0 °F

    Partly Cloudy

Detailed Forecast

Today
Snow showers likely, mainly between noon and 4pm. Patchy blowing snow after 8am. Mostly cloudy, with a temperature falling to around 17 by 5pm. Wind chill values as low as zero. Windy, with a northwest wind 21 to 30 mph, with gusts as high as 37 mph. Chance of precipitation is 60%. Total daytime snow accumulation of less than a half inch possible.
Tonight
Scattered snow showers, mainly before 9pm. Patchy blowing snow before 9pm. Mostly cloudy, with a low around 4. Wind chill values as low as -15. Windy, with a northwest wind 21 to 24 mph, with gusts as high as 30 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Saturday
Mostly cloudy and cold, with a high near 9. Wind chill values as low as -15. Windy, with a northwest wind 20 to 25 mph, with gusts as high as 30 mph.
Saturday Night
Partly cloudy, with a low around 0. Wind chill values as low as -15. Blustery, with a northwest wind 8 to 17 mph becoming southwest after midnight. Winds could gust as high as 22 mph.
Sunday
A 20 percent chance of snow. Partly sunny, with a high near 24. Windy, with a southwest wind 10 to 15 mph becoming northwest 18 to 23 mph in the afternoon. Winds could gust as high as 28 mph.
Sunday Night
Mostly cloudy, with a low around -3. Windy.
M.L.King Day
Mostly sunny and cold, with a high near 9. Windy.
Monday Night
Partly cloudy, with a low around 0.
Tuesday
Partly sunny, with a high near 20.
Tuesday Night
Mostly cloudy, with a low around 13.
Wednesday
Partly sunny, with a high near 26.
Wednesday Night
Partly cloudy, with a low around 10.
Thursday
Mostly sunny, with a high near 21.
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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:
4:51 am CST Jan 16, 2026
Forecast Valid:
7am CST Jan 16, 2026-6pm CST Jan 22, 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