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 with Haze and Breezy

2°F

-17°C

Humidity 76%
Wind Speed NW 21 G 29 mph
Barometer 30.15 in (1023.4 mb)
Dewpoint -4°F (-20°C)
Visibility 6.00 mi
Wind Chill-20°F (-29°C)
Last update 17 Jan 5:53 pm CST
Extended Forecast for

Chapin IA

Cold Weather Advisory January 18, 09:00pm until January 19, 12:00pm
Click here for hazard details and duration
Cold Weather Advisory

  • Tonight

    Tonight: A chance of flurries after 4am. Mostly cloudy, with a low around 2. Wind chill values as low as -15. Blustery, with a northwest wind 7 to 16 mph becoming south southwest after midnight. Winds could gust as high as 28 mph.

    Low: 2 °F

    Mostly Cloudy
    and Blustery
    then Mostly
    Cloudy

  • Sunday

    Sunday: A 50 percent chance of snow, mainly after 7am. Patchy blowing snow after 1pm. Mostly cloudy, with a high near 20. Wind chill values as low as -10. Windy, with a south southwest wind 9 to 14 mph becoming northwest 21 to 31 mph. Winds could gust as high as 41 mph. New snow accumulation of less than a half inch possible.

    High: 20 °F

    Chance Snow
    and Patchy
    Blowing Snow

  • Sunday Night

    Sunday Night: Patchy blowing snow. Mostly cloudy, with a low around -6. Wind chill values as low as -30. Windy, with a northwest wind 21 to 31 mph, with gusts as high as 43 mph.

    Low: -6 °F

    Patchy
    Blowing Snow
    and Windy

  • M.L.King Day

    M.L.King Day: Patchy blowing snow before 7am. Mostly sunny and cold, with a high near 7. Wind chill values as low as -30. Blustery, with a west northwest wind 15 to 20 mph decreasing to 9 to 14 mph in the afternoon. Winds could gust as high as 23 mph.

    High: 7 °F

    Blustery.
    Patchy
    Blowing Snow
    then Mostly
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around -1. West southwest wind around 7 mph.

    Low: -1 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 22.

    High: 22 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 13.

    Low: 13 °F

    Chance Snow
    then Mostly
    Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 22. Blustery.

    High: 22 °F

    Partly Sunny
    and Blustery

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 5.

    Low: 5 °F

    Partly Cloudy

Detailed Forecast

Tonight
A chance of flurries after 4am. Mostly cloudy, with a low around 2. Wind chill values as low as -15. Blustery, with a northwest wind 7 to 16 mph becoming south southwest after midnight. Winds could gust as high as 28 mph.
Sunday
A 50 percent chance of snow, mainly after 7am. Patchy blowing snow after 1pm. Mostly cloudy, with a high near 20. Wind chill values as low as -10. Windy, with a south southwest wind 9 to 14 mph becoming northwest 21 to 31 mph. Winds could gust as high as 41 mph. New snow accumulation of less than a half inch possible.
Sunday Night
Patchy blowing snow. Mostly cloudy, with a low around -6. Wind chill values as low as -30. Windy, with a northwest wind 21 to 31 mph, with gusts as high as 43 mph.
M.L.King Day
Patchy blowing snow before 7am. Mostly sunny and cold, with a high near 7. Wind chill values as low as -30. Blustery, with a west northwest wind 15 to 20 mph decreasing to 9 to 14 mph in the afternoon. Winds could gust as high as 23 mph.
Monday Night
Partly cloudy, with a low around -1. West southwest wind around 7 mph.
Tuesday
Mostly sunny, with a high near 22.
Tuesday Night
A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 13.
Wednesday
Partly sunny, with a high near 22. Blustery.
Wednesday Night
Partly cloudy, with a low around 5.
Thursday
Mostly sunny, with a high near 22.
Thursday Night
Mostly cloudy, with a low around 7.
Friday
Partly sunny, with a high near 16.
Friday Night
Mostly cloudy, with a low around -5.
Saturday
Mostly cloudy and cold, with a high near 4.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Chapin IA
 42.84°N 93.23°W
Last Update:
5:11 pm CST Jan 17, 2026
Forecast Valid:
6pm CST Jan 17, 2026-6pm CST Jan 24, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation