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.

A Few Clouds

74°F

23°C

Humidity 62%
Wind Speed W 8 mph
Barometer 29.96 in (1013.4 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 12 Jul 6:53 pm CDT
Extended Forecast for

Clear Lake IA

  • Tonight

    Tonight: Mostly clear, with a low around 57. West wind 5 to 8 mph becoming calm.

    Low: 57 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 83. South southwest wind 6 to 13 mph, with gusts as high as 20 mph.

    High: 83 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 64. South southwest wind 6 to 10 mph.

    Low: 64 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 87. South southwest wind around 6 mph.

    High: 87 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 67. South wind around 7 mph.

    Low: 67 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 86.

    High: 86 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 66.

    Low: 66 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 81.

    High: 81 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 61.

    Low: 61 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Mostly clear, with a low around 57. West wind 5 to 8 mph becoming calm.
Sunday
Sunny, with a high near 83. South southwest wind 6 to 13 mph, with gusts as high as 20 mph.
Sunday Night
Mostly clear, with a low around 64. South southwest wind 6 to 10 mph.
Monday
Sunny, with a high near 87. South southwest wind around 6 mph.
Monday Night
Mostly clear, with a low around 67. South wind around 7 mph.
Tuesday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 86.
Tuesday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 66.
Wednesday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 81.
Wednesday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 61.
Thursday
Partly sunny, with a high near 76.
Thursday Night
Mostly cloudy, with a low around 58.
Friday
Mostly sunny, with a high near 76.
Friday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 60.
Saturday
Partly sunny, with a high near 78.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Clear Lake IA
 43.13°N 93.37°W
Last Update:
6:38 pm CDT Jul 12, 2025
Forecast Valid:
7pm CDT Jul 12, 2025-6pm CDT Jul 19, 2025
 
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