Current conditions at

Mason City Municipal Airport (KMCW)

Lat: 43.15°NLon: 93.33°WElev: 1188ft.

Fog

33°F

1°C

Humidity 100%
Wind Speed SE 17 mph
Barometer 29.80 in (1009.9 mb)
Dewpoint 33°F (1°C)
Visibility 0.50 mi
Wind Chill22°F (-6°C)
Last update 27 Dec 7:53 am CST
Extended Forecast for

Clear Lake IA

Winter Storm Watch December 28, 06:00am until December 29, 06:00am
Dense Fog Advisory December 27, 08:02am until December 27, 12:00pm
Click here for hazard details and duration
Winter Storm Watch
Dense Fog Advisory
  •  
    Dense Fog Advisory December 27, 08:02am until December 27, 12:00pm

    NOW until 12:00pm Sat

    Dense Fog Advisory

  • Today

    High: 43 °F

    Dense Fog

  • Tonight

    Tonight: A 30 percent chance of rain after 5am.  Patchy fog.  Otherwise, cloudy, with a low around 33. Light and variable wind becoming north 6 to 11 mph after midnight.

    Low: 33 °F

    Patchy Fog
    then Chance
    Rain and
    Areas Fog

  • Sunday

    Sunday: Rain, snow, and sleet before 11am, then snow likely, possibly mixed with sleet between 11am and noon, then snow after noon.  Widespread blowing snow, mainly after 5pm. Areas of fog before 7am. Temperature falling to around 15 by 5pm. Wind chill values as low as -5. Windy, with a northwest wind 15 to 20 mph increasing to 27 to 32 mph in the afternoon. Winds could gust as high as 44 mph.  Chance of precipitation is 90%. New snow and sleet accumulation of 1 to 2 inches possible.

    High: 35 °F

    Wintry Mix
    and Blowing
    Snow

  • Sunday Night

    Sunday Night: Snow likely, mainly before midnight.  Widespread blowing snow. Cloudy, with a low around 3. Wind chill values as low as -20. Windy, with a northwest wind 31 to 33 mph, with gusts as high as 44 mph.  Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    Low: 3 °F

    Snow Likely
    and Blowing
    Snow

  • Monday

    Monday: A 20 percent chance of snow before noon.  Widespread blowing snow, mainly before 7am. Partly sunny and cold, with a high near 9. Windy, with a northwest wind 20 to 30 mph, with gusts as high as 36 mph.

    High: 9 °F

    Slight Chance
    Snow and
    Blowing Snow

  • Monday Night

    Monday Night: Mostly clear, with a low around 3. Blustery.

    Low: 3 °F

    Mostly Clear
    and Blustery
    then Mostly
    Clear

  • Tuesday

    Tuesday: Partly sunny, with a high near 28.

    High: 28 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 15.

    Low: 15 °F

    Mostly Cloudy

Detailed Forecast

Today
Widespread dense fog, mainly before noon. Otherwise, cloudy, with a high near 43. South southeast wind 9 to 14 mph, with gusts as high as 21 mph.
Tonight
A 30 percent chance of rain after 5am. Patchy fog. Otherwise, cloudy, with a low around 33. Light and variable wind becoming north 6 to 11 mph after midnight.
Sunday
Rain, snow, and sleet before 11am, then snow likely, possibly mixed with sleet between 11am and noon, then snow after noon. Widespread blowing snow, mainly after 5pm. Areas of fog before 7am. Temperature falling to around 15 by 5pm. Wind chill values as low as -5. Windy, with a northwest wind 15 to 20 mph increasing to 27 to 32 mph in the afternoon. Winds could gust as high as 44 mph. Chance of precipitation is 90%. New snow and sleet accumulation of 1 to 2 inches possible.
Sunday Night
Snow likely, mainly before midnight. Widespread blowing snow. Cloudy, with a low around 3. Wind chill values as low as -20. Windy, with a northwest wind 31 to 33 mph, with gusts as high as 44 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Monday
A 20 percent chance of snow before noon. Widespread blowing snow, mainly before 7am. Partly sunny and cold, with a high near 9. Windy, with a northwest wind 20 to 30 mph, with gusts as high as 36 mph.
Monday Night
Mostly clear, with a low around 3. Blustery.
Tuesday
Partly sunny, with a high near 28.
Tuesday Night
Mostly cloudy, with a low around 15.
Wednesday
Mostly cloudy, with a high near 23.
Wednesday Night
Mostly cloudy, with a low around -1.
New Year's Day
Sunny and cold, with a high near 7.
Thursday Night
Mostly clear, with a low around -4.
Friday
Mostly sunny, with a high near 15.
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ABOUT THIS FORECAST

 
Point Forecast:
Clear Lake IA
 43.13°N 93.37°W
7:16 am CST Dec 27, 2025
8am CST Dec 27, 2025-6pm CST Jan 2, 2026
 
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Additional Resources

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