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.

Fog/Mist

40°F

4°C

Humidity 100%
Wind Speed Calm
Barometer 29.83 in (1009.7 mb)
Dewpoint 40°F (4°C)
Visibility 6.00 mi
Last update 21 Mar 4:53 am CDT
Extended Forecast for

Chapin IA

  • Today

    Today: Sunny, with a high near 81. Breezy, with a south wind 6 to 11 mph becoming west southwest 12 to 17 mph in the afternoon. Winds could gust as high as 26 mph.

    High: 81 °F

    Sunny and
    Breezy

  • Tonight

    Tonight: A chance of sprinkles after 4am. Increasing clouds, with a low around 42. Windy, with a south southwest wind 7 to 12 mph becoming north northeast 16 to 21 mph after midnight. Winds could gust as high as 26 mph.

    Low: 42 °F

    Mostly Clear
    then Windy

  • Sunday

    Sunday: A chance of sprinkles before 7am. Partly sunny, with a steady temperature around 45. Windy, with a north wind 20 to 22 mph, with gusts as high as 28 mph.

    High: 45 °F

    Chance
    Sprinkles and
    Windy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 28. North wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 28 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 51. Light and variable wind becoming south southeast 5 to 7 mph in the morning.

    High: 51 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 37.

    Low: 37 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 59.

    High: 59 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of rain after 1am. Mostly cloudy, with a low around 39.

    Low: 39 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 61.

    High: 61 °F

    Mostly Cloudy

Detailed Forecast

Today
Sunny, with a high near 81. Breezy, with a south wind 6 to 11 mph becoming west southwest 12 to 17 mph in the afternoon. Winds could gust as high as 26 mph.
Tonight
A chance of sprinkles after 4am. Increasing clouds, with a low around 42. Windy, with a south southwest wind 7 to 12 mph becoming north northeast 16 to 21 mph after midnight. Winds could gust as high as 26 mph.
Sunday
A chance of sprinkles before 7am. Partly sunny, with a steady temperature around 45. Windy, with a north wind 20 to 22 mph, with gusts as high as 28 mph.
Sunday Night
Mostly clear, with a low around 28. North wind 5 to 15 mph, with gusts as high as 20 mph.
Monday
Mostly sunny, with a high near 51. Light and variable wind becoming south southeast 5 to 7 mph in the morning.
Monday Night
Mostly cloudy, with a low around 37.
Tuesday
Partly sunny, with a high near 59.
Tuesday Night
A 20 percent chance of rain after 1am. Mostly cloudy, with a low around 39.
Wednesday
Mostly cloudy, with a high near 61.
Wednesday Night
Mostly cloudy, with a low around 45.
Thursday
Partly sunny, with a high near 58. Windy.
Thursday Night
Mostly cloudy, with a low around 27. Blustery.
Friday
Partly sunny, with a high near 46.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Chapin IA
 42.84°N 93.23°W
Last Update:
1:51 am CDT Mar 21, 2026
Forecast Valid:
5am CDT Mar 21, 2026-6pm CDT Mar 27, 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