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.

Fair

57°F

14°C

Humidity 87%
Wind Speed W 8 mph
Barometer 29.97 in (1014.0 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 25 Jun 3:53 am CDT
Extended Forecast for

Clear Lake IA

  • Today

    Today: Mostly sunny, with a high near 76. North northwest wind 5 to 9 mph.

    High: 76 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 55. Calm wind becoming east around 5 mph after midnight.

    Low: 55 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 78. East wind 7 to 10 mph.

    High: 78 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 58. East southeast wind 7 to 10 mph.

    Low: 58 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 80. Breezy, with a southeast wind 9 to 18 mph, with gusts as high as 25 mph.

    High: 80 °F

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67. Breezy. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 67 °F

    Breezy.
    Chance
    Showers then
    Chance
    T-storms

  • Sunday

    Sunday: Mostly sunny, with a high near 91. Windy.

    High: 91 °F

    Mostly Sunny
    and Windy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 74. Windy.

    Low: 74 °F

    Mostly Clear
    and Windy

  • Monday

    Monday: Sunny, with a high near 94. Windy.

    High: 94 °F

    Sunny and
    Windy

Detailed Forecast

Today
Mostly sunny, with a high near 76. North northwest wind 5 to 9 mph.
Tonight
Partly cloudy, with a low around 55. Calm wind becoming east around 5 mph after midnight.
Friday
Mostly sunny, with a high near 78. East wind 7 to 10 mph.
Friday Night
Partly cloudy, with a low around 58. East southeast wind 7 to 10 mph.
Saturday
Mostly sunny, with a high near 80. Breezy, with a southeast wind 9 to 18 mph, with gusts as high as 25 mph.
Saturday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67. Breezy. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
Mostly sunny, with a high near 91. Windy.
Sunday Night
Mostly clear, with a low around 74. Windy.
Monday
Sunny, with a high near 94. Windy.
Monday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73. Windy.
Tuesday
Mostly sunny, with a high near 92. Breezy.
Tuesday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71. Breezy.
Wednesday
Mostly sunny, with a high near 91.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Clear Lake IA
 43.13°N 93.37°W
Last Update:
4:32 am CDT Jun 25, 2026
Forecast Valid:
4am CDT Jun 25, 2026-6pm CDT Jul 1, 2026
 
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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