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

48°F

9°C

Humidity 93%
Wind Speed NW 9 mph
Barometer 29.73 in (1006.4 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Wind Chill44°F (7°C)
Last update 15 Apr 7:53 am CDT
Extended Forecast for

Chapin IA

  • Today

    Today: A slight chance of showers and thunderstorms before 2pm, then a chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 69. East northeast wind 5 to 7 mph. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.

    High: 69 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly before 7pm. Some of the storms could be severe. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 49. Northeast wind around 6 mph becoming west northwest after midnight. New precipitation amounts between a quarter and half of an inch possible.

    Low: 49 °F

    Severe
    Thunderstorms
    then Patchy
    Fog

  • Thursday

    Thursday: Sunny, with a high near 74. Northwest wind 5 to 10 mph becoming south southwest in the afternoon.

    High: 74 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 55. South wind 9 to 13 mph, with gusts as high as 18 mph.

    Low: 55 °F

    Mostly Clear

  • Friday

    Friday: A slight chance of showers before 10am, then a slight chance of showers and thunderstorms between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 76. Windy, with a south southeast wind 14 to 24 mph, with gusts as high as 31 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 76 °F

    Windy. Slight
    Chance
    T-storms then
    Showers
    Likely

  • Friday Night

    Friday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 32. Windy. Chance of precipitation is 50%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 32 °F

    Chance
    T-storms and
    Breezy then
    Chance
    Showers and
    Windy

  • Saturday

    Saturday: A slight chance of rain and snow showers before 1pm, then a slight chance of snow showers. Mostly sunny, with a high near 45. Windy. Chance of precipitation is 20%.

    High: 45 °F

    Slight Chance
    Rain/Snow and
    Windy

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 28. Windy.

    Low: 28 °F

    Mostly Cloudy
    and Windy
    then Partly
    Cloudy

  • Sunday

    Sunday: Sunny, with a high near 53.

    High: 53 °F

    Sunny

Detailed Forecast

Today
A slight chance of showers and thunderstorms before 2pm, then a chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 69. East northeast wind 5 to 7 mph. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
A 40 percent chance of showers and thunderstorms, mainly before 7pm. Some of the storms could be severe. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 49. Northeast wind around 6 mph becoming west northwest after midnight. New precipitation amounts between a quarter and half of an inch possible.
Thursday
Sunny, with a high near 74. Northwest wind 5 to 10 mph becoming south southwest in the afternoon.
Thursday Night
Mostly clear, with a low around 55. South wind 9 to 13 mph, with gusts as high as 18 mph.
Friday
A slight chance of showers before 10am, then a slight chance of showers and thunderstorms between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 76. Windy, with a south southeast wind 14 to 24 mph, with gusts as high as 31 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 32. Windy. Chance of precipitation is 50%. New precipitation amounts between a quarter and half of an inch possible.
Saturday
A slight chance of rain and snow showers before 1pm, then a slight chance of snow showers. Mostly sunny, with a high near 45. Windy. Chance of precipitation is 20%.
Saturday Night
Partly cloudy, with a low around 28. Windy.
Sunday
Sunny, with a high near 53.
Sunday Night
Mostly clear, with a low around 33.
Monday
Sunny, with a high near 67. Breezy.
Monday Night
Mostly clear, with a low around 47. Breezy.
Tuesday
Sunny, with a high near 71. Breezy.
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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:
6:46 am CDT Apr 15, 2026
Forecast Valid:
8am CDT Apr 15, 2026-6pm CDT Apr 21, 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