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

Areas of Severe Thunderstorms and Excessive Rainfall; Heat Wave Builds in the Intermountain West and Plains

A slow moving front will bring rounds of strong to severe thunderstorms and heavy rainfall to the central Plains eastward to the east-central U.S.. The first widespread significant heat wave of summer for the Intermountain West and Plains is expected to develop today and expand through next week. Dangerous heat will continue to impact portions of the Southwest and Southeast. Read More >

Hazardous Weather Conditions

Current conditions at

Mason City Municipal Airport (KMCW)

Lat: 43.15°NLon: 93.33°WElev: 1188ft.

Fair

66°F

19°C

Humidity 93%
Wind Speed NW 3 mph
Barometer 29.93 in (1012.2 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 10 Jul 6:53 am CDT
Extended Forecast for

Clear Lake IA

  • Today

    Today: Partly sunny, with a high near 83. East northeast wind around 5 mph becoming calm in the afternoon.

    High: 83 °F

    Partly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 64. Light east southeast wind.

    Low: 64 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 84. South southeast wind 3 to 6 mph.

    High: 84 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 64. South southeast wind 3 to 5 mph.

    Low: 64 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 85. South wind 3 to 6 mph.

    High: 85 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 65.

    Low: 65 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 66.

    Low: 66 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

Detailed Forecast

Today
Partly sunny, with a high near 83. East northeast wind around 5 mph becoming calm in the afternoon.
Tonight
Partly cloudy, with a low around 64. Light east southeast wind.
Saturday
Sunny, with a high near 84. South southeast wind 3 to 6 mph.
Saturday Night
Mostly clear, with a low around 64. South southeast wind 3 to 5 mph.
Sunday
Sunny, with a high near 85. South wind 3 to 6 mph.
Sunday Night
Clear, with a low around 65.
Monday
Sunny, with a high near 87.
Monday Night
Clear, with a low around 66.
Tuesday
Sunny, with a high near 88.
Tuesday Night
Mostly clear, with a low around 66.
Wednesday
Sunny, with a high near 88.
Wednesday Night
Mostly clear, with a low around 67.
Thursday
Sunny, with a high near 87.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Clear Lake IA
 43.13°N 93.37°W
Last Update:
6:51 am CDT Jul 10, 2026
Forecast Valid:
7am CDT Jul 10, 2026-6pm CDT Jul 16, 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