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 42%
Wind Speed SW 13 mph
Barometer 29.89 in (1012.2 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 15 Feb 2:53 pm CST
Extended Forecast for

Clear Lake IA

  • This Afternoon

    This Afternoon: Sunny, with a high near 58. Southwest wind around 6 mph.

    High: 58 °F

    Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 41. South wind 6 to 14 mph, with gusts as high as 24 mph.

    Low: 41 °F

    Mostly Cloudy

  • Washington's Birthday

    Washington's Birthday: Patchy fog between 8am and 9am. Otherwise, mostly sunny, with a high near 55. West southwest wind 6 to 11 mph becoming east northeast in the afternoon. Winds could gust as high as 18 mph.

    High: 55 °F

    Patchy Fog
    then Mostly
    Sunny

  • Monday Night

    Monday Night: Patchy fog between 1am and 3am. Otherwise, mostly cloudy, with a low around 38. East wind 6 to 9 mph.

    Low: 38 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Tuesday

    Tuesday: Partly sunny, with a high near 58. Windy, with an east southeast wind 10 to 15 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 58 °F

    Partly Sunny
    and Windy

  • Tuesday Night

    Tuesday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 42. Breezy. New precipitation amounts of less than a tenth of an inch possible.

    Low: 42 °F

    Chance Rain
    and Breezy

  • Wednesday

    Wednesday: A 20 percent chance of rain before noon. Sunny, with a high near 53. Windy.

    High: 53 °F

    Windy. Slight
    Chance Rain
    then Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 28.

    Low: 28 °F

    Mostly Clear

  • Thursday

    Thursday: A 30 percent chance of snow after noon. Partly sunny, with a high near 42. Breezy.

    High: 42 °F

    Mostly Sunny
    then Chance
    Snow and
    Breezy

Detailed Forecast

This Afternoon
Sunny, with a high near 58. Southwest wind around 6 mph.
Tonight
Mostly cloudy, with a low around 41. South wind 6 to 14 mph, with gusts as high as 24 mph.
Washington's Birthday
Patchy fog between 8am and 9am. Otherwise, mostly sunny, with a high near 55. West southwest wind 6 to 11 mph becoming east northeast in the afternoon. Winds could gust as high as 18 mph.
Monday Night
Patchy fog between 1am and 3am. Otherwise, mostly cloudy, with a low around 38. East wind 6 to 9 mph.
Tuesday
Partly sunny, with a high near 58. Windy, with an east southeast wind 10 to 15 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 30 mph.
Tuesday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 42. Breezy. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
A 20 percent chance of rain before noon. Sunny, with a high near 53. Windy.
Wednesday Night
Mostly clear, with a low around 28.
Thursday
A 30 percent chance of snow after noon. Partly sunny, with a high near 42. Breezy.
Thursday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 21.
Friday
Partly sunny, with a high near 30. Blustery.
Friday Night
Mostly cloudy, with a low around 15.
Saturday
Mostly sunny, with a high near 31.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Clear Lake IA
 43.13°N 93.37°W
Last Update:
2:51 pm CST Feb 15, 2026
Forecast Valid:
3pm CST Feb 15, 2026-6pm CST Feb 21, 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