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 and Breezy

43°F

6°C

Humidity 68%
Wind Speed W 23 G 45 mph
Barometer 29.31 in (992.4 mb)
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Wind Chill34°F (1°C)
Last update 18 Feb 5:53 am CST
Extended Forecast for

Thornton IA

Wind Advisory until February 18, 04:00pm
Red Flag Warning February 18, 10:00am until February 18, 07:00pm
Click here for hazard details and duration
Wind Advisory
Red Flag Warning
  •  
    Wind Advisory until February 18, 04:00pm

    NOW until 4:00pm Wed

    Wind Advisory

  • Today

    High: 56 °F

    Sunny and
    Very Windy

  • Tonight

    Tonight: Mostly clear, with a low around 28. Breezy, with a west wind 13 to 18 mph becoming north northwest 7 to 12 mph after midnight. Winds could gust as high as 25 mph.

    Low: 28 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Thursday

    Thursday: A chance of rain and snow before 3pm, then a chance of snow. Partly sunny, with a high near 41. Breezy, with a north wind 9 to 18 mph, with gusts as high as 22 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.

    High: 41 °F

    Chance
    Rain/Snow and
    Breezy

  • Thursday Night

    Thursday Night: Snow likely, possibly mixed with rain, becoming all snow after 9pm. Mostly cloudy, with a low around 21. Wind chill values as low as 5. Windy, with a northwest wind 17 to 21 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New snow accumulation of 2 to 4 inches possible.

    Low: 21 °F

    Rain/Snow
    Likely and
    Blustery then
    Snow Likely
    and Windy

  • Friday

    Friday: A 20 percent chance of snow before noon. Partly sunny, with a high near 30. Windy, with a west northwest wind 13 to 21 mph, with gusts as high as 24 mph.

    High: 30 °F

    Slight Chance
    Snow and
    Windy then
    Mostly Sunny
    and Blustery

  • Friday Night

    Friday Night: Partly cloudy, with a low around 12.

    Low: 12 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 27.

    High: 27 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 9.

    Low: 9 °F

    Partly Cloudy

Detailed Forecast

Today
Sunny, with a high near 56. Very windy, with a west wind 33 to 38 mph decreasing to 24 to 29 mph. Winds could gust as high as 48 mph.
Tonight
Mostly clear, with a low around 28. Breezy, with a west wind 13 to 18 mph becoming north northwest 7 to 12 mph after midnight. Winds could gust as high as 25 mph.
Thursday
A chance of rain and snow before 3pm, then a chance of snow. Partly sunny, with a high near 41. Breezy, with a north wind 9 to 18 mph, with gusts as high as 22 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.
Thursday Night
Snow likely, possibly mixed with rain, becoming all snow after 9pm. Mostly cloudy, with a low around 21. Wind chill values as low as 5. Windy, with a northwest wind 17 to 21 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New snow accumulation of 2 to 4 inches possible.
Friday
A 20 percent chance of snow before noon. Partly sunny, with a high near 30. Windy, with a west northwest wind 13 to 21 mph, with gusts as high as 24 mph.
Friday Night
Partly cloudy, with a low around 12.
Saturday
Mostly sunny, with a high near 27.
Saturday Night
Partly cloudy, with a low around 9.
Sunday
Mostly sunny, with a high near 24. Blustery.
Sunday Night
Mostly clear, with a low around 7.
Monday
Sunny, with a high near 27.
Monday Night
Partly cloudy, with a low around 14.
Tuesday
Mostly sunny, with a high near 41. Windy.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Thornton IA
 42.95°N 93.37°W
Last Update:
5:16 am CST Feb 18, 2026
Forecast Valid:
6am CST Feb 18, 2026-6pm CST Feb 24, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation