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.

Partly Cloudy

62°F

17°C

Humidity 93%
Wind Speed S 7 mph
Barometer 29.95 in (1013.2 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 21 Sep 12:53 am CDT
Extended Forecast for

Chapin IA

  • Overnight

    Overnight: Mostly cloudy, with a low around 57. South southwest wind 3 to 5 mph.

    Low: 57 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after 4pm. Patchy fog before 9am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 76. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 76 °F

    Patchy Fog
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 40 percent chance of showers and thunderstorms, mainly after 7pm. Partly cloudy, with a low around 58. South wind 3 to 5 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 58 °F

    Chance
    T-storms

  • Monday

    Monday: A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 76. Calm wind becoming south southwest around 5 mph in the afternoon. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 76 °F

    Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 4am, then a slight chance of showers. Mostly cloudy, with a low around 57. Calm wind. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 57 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A 20 percent chance of showers. Partly sunny, with a high near 74.

    High: 74 °F

    Slight Chance
    Showers

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 56.

    Low: 56 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 72.

    High: 72 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 52.

    Low: 52 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 57. South southwest wind 3 to 5 mph.
Sunday
A 20 percent chance of showers and thunderstorms after 4pm. Patchy fog before 9am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 76. Calm wind becoming southwest around 6 mph in the afternoon.
Sunday Night
A 40 percent chance of showers and thunderstorms, mainly after 7pm. Partly cloudy, with a low around 58. South wind 3 to 5 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 76. Calm wind becoming south southwest around 5 mph in the afternoon. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday Night
A chance of showers and thunderstorms before 4am, then a slight chance of showers. Mostly cloudy, with a low around 57. Calm wind. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday
A 20 percent chance of showers. Partly sunny, with a high near 74.
Tuesday Night
Mostly cloudy, with a low around 56.
Wednesday
Partly sunny, with a high near 72.
Wednesday Night
Partly cloudy, with a low around 52.
Thursday
Mostly sunny, with a high near 70.
Thursday Night
Partly cloudy, with a low around 51.
Friday
Sunny, with a high near 74.
Friday Night
Mostly clear, with a low around 49.
Saturday
Sunny, with a high near 74.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Chapin IA
 42.82°N 93.23°W
Last Update:
10:50 pm CDT Sep 20, 2025
Forecast Valid:
1am CDT Sep 21, 2025-6pm CDT Sep 27, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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