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

4°F

-16°C

Humidity 69%
Wind Speed W 13 mph
Barometer 30.26 in (1027.6 mb)
Dewpoint -4°F (-20°C)
Visibility 8.00 mi
Wind Chill-13°F (-25°C)
Last update 19 Jan 2:53 pm CST
Extended Forecast for

Chapin IA

  • M.L.King Day

    M.L.King Day: Partly sunny and cold, with a steady temperature around 5. Wind chill values as low as -15. West wind 10 to 15 mph, with gusts as high as 21 mph.

    High: 5 °F

    Cold

  • Tonight

    Tonight: Mostly cloudy during the early evening, then gradual clearing, with a low around -3. Wind chill values as low as -10. West wind 3 to 8 mph.

    Low: -3 °F

    Gradual
    Clearing

  • Tuesday

    Tuesday: A 20 percent chance of snow after 3pm. Increasing clouds, with a high near 17. Wind chill values as low as -10. Light and variable wind becoming south 5 to 9 mph in the morning.

    High: 17 °F

    Sunny then
    Slight Chance
    Snow

  • Tuesday Night

    Tuesday Night: Snow, mainly before midnight. Low around 11. Wind chill values as low as zero. South southeast wind 5 to 9 mph becoming northwest after midnight. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    Low: 11 °F

    Snow then
    Chance Snow

  • Wednesday

    Wednesday: A 30 percent chance of snow after noon. Mostly sunny, with a high near 28. Breezy, with a west southwest wind 10 to 18 mph, with gusts as high as 23 mph. Little or no snow accumulation expected.

    High: 28 °F

    Mostly Sunny
    then Chance
    Snow and
    Breezy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 4. Blustery.

    Low: 4 °F

    Partly Cloudy
    and Blustery
    then Partly
    Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 15.

    High: 15 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around -16.

    Low: -16 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny and cold, with a high near -9.

    High: -9 °F

    Cold

Detailed Forecast

M.L.King Day
Partly sunny and cold, with a steady temperature around 5. Wind chill values as low as -15. West wind 10 to 15 mph, with gusts as high as 21 mph.
Tonight
Mostly cloudy during the early evening, then gradual clearing, with a low around -3. Wind chill values as low as -10. West wind 3 to 8 mph.
Tuesday
A 20 percent chance of snow after 3pm. Increasing clouds, with a high near 17. Wind chill values as low as -10. Light and variable wind becoming south 5 to 9 mph in the morning.
Tuesday Night
Snow, mainly before midnight. Low around 11. Wind chill values as low as zero. South southeast wind 5 to 9 mph becoming northwest after midnight. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
Wednesday
A 30 percent chance of snow after noon. Mostly sunny, with a high near 28. Breezy, with a west southwest wind 10 to 18 mph, with gusts as high as 23 mph. Little or no snow accumulation expected.
Wednesday Night
Partly cloudy, with a low around 4. Blustery.
Thursday
Mostly sunny, with a high near 15.
Thursday Night
Partly cloudy, with a low around -16.
Friday
Mostly sunny and cold, with a high near -9.
Friday Night
Mostly cloudy, with a low around -20.
Saturday
Mostly sunny and cold, with a high near -3.
Saturday Night
Partly cloudy, with a low around -13.
Sunday
Mostly sunny and cold, with a high near 9.
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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:
3:16 pm CST Jan 19, 2026
Forecast Valid:
3pm CST Jan 19, 2026-6pm CST Jan 25, 2026
 
Forecast Discussion
 
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Additional Resources

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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