National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Mason City Municipal Airport (KMCW)

Lat: 43.15°NLon: 93.33°WElev: 1188ft.

Fair

37°F

3°C

Humidity 59%
Wind Speed NW 12 mph
Barometer 30.16 in (1021.7 mb)
Dewpoint 24°F (-4°C)
Visibility 10.00 mi
Wind Chill29°F (-2°C)
Last update 9 Apr 8:53 am CDT
Extended Forecast for

Clear Lake IA

  • Today

    Today: A 10 percent chance of showers after 5pm. Increasing clouds, with a high near 54. Northwest wind 5 to 7 mph.

    High: 54 °F

    Sunny then
    Slight Chance
    Showers

  • Tonight

    Tonight: A 50 percent chance of showers, mainly before 11pm. Mostly cloudy, with a low around 31. North wind 5 to 8 mph. New precipitation amounts of less than a tenth of an inch possible.

    Low: 31 °F

    Chance
    Showers then
    Slight Chance
    Showers

  • Friday

    Friday: Partly sunny, then gradually becoming sunny, with a high near 55. North wind around 8 mph.

    High: 55 °F

    Becoming
    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 35. Light and variable wind becoming east southeast around 6 mph after midnight.

    Low: 35 °F

    Mostly Clear

  • Saturday

    Saturday: Showers likely, with thunderstorms also possible after 4pm. Mostly cloudy, with a high near 58. Breezy, with a southeast wind 9 to 18 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 58 °F

    Showers
    Likely and
    Breezy

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm. Cloudy, with a low around 52. Breezy. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 52 °F

    Showers
    Likely and
    Breezy

  • Sunday

    Sunday: A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 74. Windy. Chance of precipitation is 60%.

    High: 74 °F

    Showers
    Likely and
    Windy

  • Sunday Night

    Sunday Night: A 40 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 58. Windy.

    Low: 58 °F

    Chance
    Showers and
    Windy

  • Monday

    Monday: A 30 percent chance of showers after 1pm. Mostly sunny, with a high near 80. Breezy.

    High: 80 °F

    Mostly Sunny
    then Chance
    Showers and
    Breezy

Detailed Forecast

Today
A 10 percent chance of showers after 5pm. Increasing clouds, with a high near 54. Northwest wind 5 to 7 mph.
Tonight
A 50 percent chance of showers, mainly before 11pm. Mostly cloudy, with a low around 31. North wind 5 to 8 mph. New precipitation amounts of less than a tenth of an inch possible.
Friday
Partly sunny, then gradually becoming sunny, with a high near 55. North wind around 8 mph.
Friday Night
Mostly clear, with a low around 35. Light and variable wind becoming east southeast around 6 mph after midnight.
Saturday
Showers likely, with thunderstorms also possible after 4pm. Mostly cloudy, with a high near 58. Breezy, with a southeast wind 9 to 18 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers likely and possibly a thunderstorm. Cloudy, with a low around 52. Breezy. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Sunday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 74. Windy. Chance of precipitation is 60%.
Sunday Night
A 40 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 58. Windy.
Monday
A 30 percent chance of showers after 1pm. Mostly sunny, with a high near 80. Breezy.
Monday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Partly cloudy, with a low around 52. Breezy. Chance of precipitation is 60%.
Tuesday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 66.
Tuesday Night
Showers likely. Mostly cloudy, with a low around 40. Chance of precipitation is 60%.
Wednesday
A 40 percent chance of showers. Partly sunny, with a high near 59.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Clear Lake IA
 43.15°N 93.37°W
Last Update:
6:21 am CDT Apr 9, 2026
Forecast Valid:
9am CDT Apr 9, 2026-6pm CDT Apr 15, 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