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.

Fair

41°F

5°C

Humidity 93%
Wind Speed SE 6 mph
Barometer 29.93 in (1014.4 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Wind Chill37°F (3°C)
Last update 18 Mar 6:53 pm CDT
Extended Forecast for

Chapin IA

  • Tonight

    Tonight: Mostly cloudy, with a low around 33. South wind around 6 mph becoming west northwest after midnight.

    Low: 33 °F

    Mostly Cloudy

  • Thursday

    Thursday: Patchy fog before 10am. Otherwise, partly sunny, with a high near 52. East northeast wind around 6 mph becoming light and variable.

    High: 52 °F

    Patchy Fog
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 40. South wind 5 to 9 mph.

    Low: 40 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 67. Northwest wind around 10 mph.

    High: 67 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 40. Northwest wind around 6 mph becoming west southwest after midnight.

    Low: 40 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 74.

    High: 74 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 40. Breezy.

    Low: 40 °F

    Mostly Clear
    then Partly
    Cloudy and
    Breezy

  • Sunday

    Sunday: Mostly cloudy, with a high near 48. Breezy.

    High: 48 °F

    Mostly Cloudy
    and Breezy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 26.

    Low: 26 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 33. South wind around 6 mph becoming west northwest after midnight.
Thursday
Patchy fog before 10am. Otherwise, partly sunny, with a high near 52. East northeast wind around 6 mph becoming light and variable.
Thursday Night
Mostly cloudy, with a low around 40. South wind 5 to 9 mph.
Friday
Mostly sunny, with a high near 67. Northwest wind around 10 mph.
Friday Night
Partly cloudy, with a low around 40. Northwest wind around 6 mph becoming west southwest after midnight.
Saturday
Sunny, with a high near 74.
Saturday Night
Partly cloudy, with a low around 40. Breezy.
Sunday
Mostly cloudy, with a high near 48. Breezy.
Sunday Night
Mostly cloudy, with a low around 26.
Monday
Mostly sunny, with a high near 46.
Monday Night
Mostly cloudy, with a low around 31.
Tuesday
Mostly cloudy, with a high near 52.
Tuesday Night
Mostly cloudy, with a low around 34.
Wednesday
Mostly cloudy, with a high near 61. Breezy.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Chapin IA
 42.84°N 93.23°W
Last Update:
6:16 pm CDT Mar 18, 2026
Forecast Valid:
7pm CDT Mar 18, 2026-6pm CDT Mar 25, 2026
 
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