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.

Overcast and Breezy

17°F

-8°C

Humidity 80%
Wind Speed NW 23 G 32 mph
Barometer 30.31 in (1028.0 mb)
Dewpoint 12°F (-11°C)
Visibility 9.00 mi
Wind Chill-1°F (-18°C)
Last update 11 Jan 2:53 am CST
Extended Forecast for

Clear Lake IA

  • Overnight

    Overnight: A chance of flurries before 4am. Mostly cloudy, with a steady temperature around 18. Wind chill values as low as zero. Windy, with a northwest wind 15 to 21 mph, with gusts as high as 29 mph.

    Low: 18 °F

    Chance
    Flurries and
    Windy

  • Sunday

    Sunday: Mostly sunny, with a high near 30. Wind chill values as low as zero. Northwest wind 9 to 14 mph becoming southwest in the afternoon. Winds could gust as high as 20 mph.

    High: 30 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Increasing clouds, with a low around 26. Breezy, with a south southwest wind 8 to 16 mph becoming west after midnight. Winds could gust as high as 21 mph.

    Low: 26 °F

    Mostly Clear
    and Breezy
    then Mostly
    Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 41. West southwest wind 7 to 9 mph.

    High: 41 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 33. Southwest wind 8 to 15 mph, with gusts as high as 20 mph.

    Low: 33 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 45. Breezy.

    High: 45 °F

    Mostly Sunny
    and Breezy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 21. Windy.

    Low: 21 °F

    Mostly Cloudy
    and Windy

  • Wednesday

    Wednesday: Partly sunny, with a high near 25. Windy.

    High: 25 °F

    Partly Sunny
    and Windy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 15.

    Low: 15 °F

    Partly Cloudy

Detailed Forecast

Overnight
A chance of flurries before 4am. Mostly cloudy, with a steady temperature around 18. Wind chill values as low as zero. Windy, with a northwest wind 15 to 21 mph, with gusts as high as 29 mph.
Sunday
Mostly sunny, with a high near 30. Wind chill values as low as zero. Northwest wind 9 to 14 mph becoming southwest in the afternoon. Winds could gust as high as 20 mph.
Sunday Night
Increasing clouds, with a low around 26. Breezy, with a south southwest wind 8 to 16 mph becoming west after midnight. Winds could gust as high as 21 mph.
Monday
Mostly sunny, with a high near 41. West southwest wind 7 to 9 mph.
Monday Night
Mostly cloudy, with a low around 33. Southwest wind 8 to 15 mph, with gusts as high as 20 mph.
Tuesday
Mostly sunny, with a high near 45. Breezy.
Tuesday Night
Mostly cloudy, with a low around 21. Windy.
Wednesday
Partly sunny, with a high near 25. Windy.
Wednesday Night
Partly cloudy, with a low around 15.
Thursday
A 40 percent chance of snow after noon. Mostly cloudy, with a high near 31.
Thursday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 23. Breezy.
Friday
A 40 percent chance of snow. Mostly cloudy, with a high near 28. Windy.
Friday Night
Mostly cloudy, with a low around 8. Blustery.
Saturday
Partly sunny, with a high near 14. Blustery.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Clear Lake IA
 43.13°N 93.37°W
Last Update:
3:16 am CST Jan 11, 2026
Forecast Valid:
3am CST Jan 11, 2026-6pm CST Jan 17, 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