National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Mason City Municipal Airport (KMCW)

Lat: 43.15°NLon: 93.33°WElev: 1188ft.

Overcast

40°F

4°C

Humidity 93%
Wind Speed Calm
Barometer 30.00 in (1016.7 mb)
Dewpoint 38°F (3°C)
Visibility 8.00 mi
Last update 4 Mar 7:53 pm CST
Extended Forecast for

Chapin IA

  • Tonight

    Tonight: Patchy fog after midnight. Otherwise, cloudy, with a low around 37. Light and variable wind.

    Low: 37 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Thursday

    Thursday: Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 53. Southeast wind 3 to 8 mph.

    High: 53 °F

    Patchy Fog
    then Partly
    Sunny

  • Thursday Night

    Thursday Night: A chance of showers, then showers and possibly a thunderstorm after 3am. Patchy fog after 2am. Low around 43. Southeast wind 7 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 43 °F

    Mostly Cloudy
    then Showers
    and Patchy
    Fog

  • Friday

    Friday: Rain and possibly a thunderstorm. High near 64. South southwest wind 11 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    High: 64 °F

    Rain then
    Rain Likely

  • Friday Night

    Friday Night: Rain and possibly a thunderstorm. Low around 31. Blustery, with a south southwest wind 14 to 18 mph becoming northwest after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 31 °F

    Rain and
    Breezy then
    Chance Rain
    and Blustery

  • Saturday

    Saturday: Mostly sunny, with a high near 47. Breezy.

    High: 47 °F

    Partly Sunny
    and Breezy
    then Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 34.

    Low: 34 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 62. Breezy.

    High: 62 °F

    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 42.

    Low: 42 °F

    Mostly Clear

Detailed Forecast

Tonight
Patchy fog after midnight. Otherwise, cloudy, with a low around 37. Light and variable wind.
Thursday
Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 53. Southeast wind 3 to 8 mph.
Thursday Night
A chance of showers, then showers and possibly a thunderstorm after 3am. Patchy fog after 2am. Low around 43. Southeast wind 7 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Friday
Rain and possibly a thunderstorm. High near 64. South southwest wind 11 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Friday Night
Rain and possibly a thunderstorm. Low around 31. Blustery, with a south southwest wind 14 to 18 mph becoming northwest after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Saturday
Mostly sunny, with a high near 47. Breezy.
Saturday Night
Mostly clear, with a low around 34.
Sunday
Sunny, with a high near 62. Breezy.
Sunday Night
Mostly clear, with a low around 42.
Monday
Sunny, with a high near 69. Breezy.
Monday Night
Mostly clear, with a low around 40.
Tuesday
A 50 percent chance of rain. Partly sunny, with a high near 55. Windy.
Tuesday Night
A chance of rain and snow. Mostly cloudy, with a low around 22. Blustery. Chance of precipitation is 40%.
Wednesday
Partly sunny, with a high near 33. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
Chapin IA
 42.84°N 93.23°W
Last Update:
8:17 pm CST Mar 4, 2026
Forecast Valid:
8pm CST Mar 4, 2026-6pm CDT Mar 11, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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