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

77°F

25°C

Humidity 66%
Wind Speed SW 12 mph
Barometer 29.78 in (1007.2 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 16 Jun 9:53 pm CDT
Extended Forecast for

Clear Lake IA

  • Tonight

    Tonight: A chance of showers and thunderstorms before midnight, then a slight chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 63. South southwest wind 7 to 9 mph becoming west northwest after midnight. Chance of precipitation is 30%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 63 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms, mainly after 11am. Mostly cloudy, with a high near 80. North wind 6 to 8 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 80 °F

    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 4am. Mostly cloudy, with a low around 61. Northeast wind around 6 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 61 °F

    Chance
    T-storms then
    Showers
    Likely

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm before 7am, then a chance of showers and thunderstorms after 7am. Partly sunny, with a high near 76. Northeast wind 8 to 11 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    High: 76 °F

    Showers
    Likely then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 58. North wind 6 to 9 mph becoming west after midnight.

    Low: 58 °F

    Mostly Clear

  • Juneteenth

    Juneteenth: Sunny, with a high near 85.

    High: 85 °F

    Sunny

  • Thursday Night

    Thursday Night: A 40 percent chance of showers and thunderstorms. Mostly clear, with a low around 64.

    Low: 64 °F

    Chance
    T-storms

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 86. Breezy.

    High: 86 °F

    Slight Chance
    T-storms and
    Breezy

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 72. Windy.

    Low: 72 °F

    Chance
    T-storms and
    Windy

Detailed Forecast

Tonight
A chance of showers and thunderstorms before midnight, then a slight chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 63. South southwest wind 7 to 9 mph becoming west northwest after midnight. Chance of precipitation is 30%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday
A 40 percent chance of showers and thunderstorms, mainly after 11am. Mostly cloudy, with a high near 80. North wind 6 to 8 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 4am. Mostly cloudy, with a low around 61. Northeast wind around 6 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday
Showers likely and possibly a thunderstorm before 7am, then a chance of showers and thunderstorms after 7am. Partly sunny, with a high near 76. Northeast wind 8 to 11 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday Night
Mostly clear, with a low around 58. North wind 6 to 9 mph becoming west after midnight.
Juneteenth
Sunny, with a high near 85.
Thursday Night
A 40 percent chance of showers and thunderstorms. Mostly clear, with a low around 64.
Friday
A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 86. Breezy.
Friday Night
A 30 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 72. Windy.
Saturday
Sunny, with a high near 91. Breezy.
Saturday Night
Mostly clear, with a low around 73. Breezy.
Sunday
Sunny, with a high near 90. Windy.
Sunday Night
A 30 percent chance of showers and thunderstorms. Mostly clear, with a low around 71. Breezy.
Monday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Clear Lake IA
 43.13°N 93.37°W
Last Update:
9:56 pm CDT Jun 16, 2025
Forecast Valid:
10pm CDT Jun 16, 2025-6pm CDT Jun 23, 2025
 
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