Hazardous Weather Conditions
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 Chill | 22°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
NOW until 12:00pm Sat

Dense Fog Advisory
Today

High: 43 °F
Dense Fog
Tonight
Low: 33 °F
Patchy Fog
then Chance
Rain and
Areas FogSunday
High: 35 °F⇓
Wintry Mix
and Blowing
SnowSunday Night
Low: 3 °F
Snow Likely
and Blowing
SnowMonday
High: 9 °F
Slight Chance
Snow and
Blowing SnowMonday Night
Low: 3 °F
Mostly Clear
and Blustery
then Mostly
ClearTuesday

High: 28 °F
Partly Sunny
Tuesday Night

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.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Clear Lake IA
43.13°N 93.37°W
43.13°N 93.37°W
7:16 am CST Dec 27, 2025
8am CST Dec 27, 2025-6pm CST Jan 2, 2026



