Current conditions at

Mason City Municipal Airport (KMCW)

Lat: 43.15°NLon: 93.33°WElev: 1188ft.

Overcast and Windy

-1°F

-18°C

Humidity 65%
Wind Speed NW 40 G 51 mph
Barometer 30.09 in (1021.4 mb)
Dewpoint -10°F (-23°C)
Visibility 7.00 mi
Wind Chill-30°F (-34°C)
Last update 18 Jan 10:53 pm CST
Extended Forecast for

Thornton IA

Cold Weather Advisory until January 19, 12:00pm
Winter Weather Advisory January 18, 11:10pm until January 19, 12:00am
Click here for hazard details and duration
Cold Weather Advisory
Winter Weather Advisory
  •  
    Cold Weather Advisory until January 19, 12:00pm
    Winter Weather Advisory January 18, 11:10pm until January 19, 12:00am

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Tonight

    Low: -6 °F

    Slight Chance
    Snow and
    Patchy
    Blowing Snow

  • M.L.King Day

    M.L.King Day: Patchy blowing snow before 9am. Partly sunny and cold, with a high near 7. Wind chill values as low as -30. Windy, with a west wind 19 to 24 mph decreasing to 9 to 14 mph in the afternoon.

    High: 7 °F

    Patchy
    Blowing Snow
    and Windy
    then Partly
    Sunny and
    Blustery

  • Monday Night

    Monday Night: Mostly cloudy during the early evening, then gradual clearing, with a low around -3. Wind chill values as low as -10. West northwest wind 5 to 7 mph.

    Low: -3 °F

    Gradual
    Clearing

  • Tuesday

    Tuesday: Increasing clouds, with a high near 17. Wind chill values as low as -10. Light and variable wind becoming south 5 to 8 mph in the morning.

    High: 17 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: A 40 percent chance of snow, mainly before midnight.  Mostly cloudy, with a low around 11. South southeast wind 6 to 8 mph becoming west northwest after midnight.  New snow accumulation of less than one inch possible.

    Low: 11 °F

    Chance Snow

  • Wednesday

    Wednesday: A 20 percent chance of snow after noon.  Partly sunny, with a high near 22. Blustery.

    High: 22 °F

    Partly Sunny
    then Slight
    Chance Snow
    and Blustery

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 2.

    Low: 2 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 15.

    High: 15 °F

    Partly Sunny

Detailed Forecast

Tonight
A slight chance of snow before midnight, then a chance of flurries between midnight and 1am. Patchy blowing snow. Mostly cloudy, with a low around -6. Wind chill values as low as -30. Windy, with a northwest wind 25 to 29 mph, with gusts as high as 37 mph. Chance of precipitation is 20%.
M.L.King Day
Patchy blowing snow before 9am. Partly sunny and cold, with a high near 7. Wind chill values as low as -30. Windy, with a west wind 19 to 24 mph decreasing to 9 to 14 mph in the afternoon.
Monday Night
Mostly cloudy during the early evening, then gradual clearing, with a low around -3. Wind chill values as low as -10. West northwest wind 5 to 7 mph.
Tuesday
Increasing clouds, with a high near 17. Wind chill values as low as -10. Light and variable wind becoming south 5 to 8 mph in the morning.
Tuesday Night
A 40 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 11. South southeast wind 6 to 8 mph becoming west northwest after midnight. New snow accumulation of less than one inch possible.
Wednesday
A 20 percent chance of snow after noon. Partly sunny, with a high near 22. Blustery.
Wednesday Night
Mostly cloudy, with a low around 2.
Thursday
Partly sunny, with a high near 15.
Thursday Night
Mostly cloudy, with a low around -1.
Friday
Partly sunny and cold, with a high near 7.
Friday Night
Partly cloudy, with a low around -12.
Saturday
Partly sunny and cold, with a high near -2.
Saturday Night
Mostly cloudy, with a low around -12.
Sunday
Mostly sunny and cold, with a high near 5.
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ABOUT THIS FORECAST

 
Point Forecast:
Thornton IA
 42.95°N 93.37°W
9:51 pm CST Jan 18, 2026
11pm CST Jan 18, 2026-6pm CST Jan 25, 2026
 
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Additional Resources

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