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

26°F

-3°C

Humidity 78%
Wind Speed SW 6 mph
Barometer 29.81 in (1010.7 mb)
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Wind Chill19°F (-7°C)
Last update 25 Feb 9:53 pm CST
Extended Forecast for

Chapin IA

  • Tonight

    Tonight: Mostly cloudy, with a low around 20. Calm wind becoming south 5 to 7 mph after midnight.

    Low: 20 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, then gradually becoming sunny, with a high near 43. West southwest wind 6 to 10 mph.

    High: 43 °F

    Becoming
    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 29. West southwest wind 6 to 10 mph.

    Low: 29 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 51. West southwest wind 11 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.

    High: 51 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 21. North wind around 10 mph.

    Low: 21 °F

    Partly Cloudy

  • Saturday

    Saturday: A 50 percent chance of snow. Mostly cloudy, with a high near 28. Blustery.

    High: 28 °F

    Chance Snow
    and Blustery

  • Saturday Night

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

    Low: 9 °F

    Partly Cloudy

  • Sunday

    Sunday: A 30 percent chance of snow, mainly after noon. Mostly cloudy, with a high near 23.

    High: 23 °F

    Chance Snow

  • Sunday Night

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

    Low: 13 °F

    Chance Snow
    then Mostly
    Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 20. Calm wind becoming south 5 to 7 mph after midnight.
Thursday
Partly sunny, then gradually becoming sunny, with a high near 43. West southwest wind 6 to 10 mph.
Thursday Night
Mostly clear, with a low around 29. West southwest wind 6 to 10 mph.
Friday
Mostly sunny, with a high near 51. West southwest wind 11 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.
Friday Night
Partly cloudy, with a low around 21. North wind around 10 mph.
Saturday
A 50 percent chance of snow. Mostly cloudy, with a high near 28. Blustery.
Saturday Night
Partly cloudy, with a low around 9.
Sunday
A 30 percent chance of snow, mainly after noon. Mostly cloudy, with a high near 23.
Sunday Night
A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 13.
Monday
Mostly sunny, with a high near 31.
Monday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 19.
Tuesday
Partly sunny, with a high near 36.
Tuesday Night
Partly cloudy, with a low around 21.
Wednesday
Mostly sunny, with a high near 40.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Chapin IA
 42.84°N 93.23°W
Last Update:
10:11 pm CST Feb 25, 2026
Forecast Valid:
10pm CST Feb 25, 2026-6pm CST Mar 4, 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