Extreme Heat and Fire Weather Conditions in the West; Heavy Rain in the Southeast; Poor Air Quality

Extreme heat will begin to peak across the Desert Southwest. Multiple days of hot, dry and windy conditions are expected to bring fire weather concerns for portions of the Four Corners region into the central Great Basin and Rockies. Heavy rainfall and a flash flooding threat continues in the Southeast. Poor air quality persists from the Upper Midwest into the Northeast due to wildfire smoke. Read More >

Current conditions at

Mason City Municipal Airport (KMCW)

Lat: 43.15°NLon: 93.33°WElev: 1188ft.

Light Rain Fog/Mist and Windy

64°F

18°C

Humidity 93%
Wind Speed S 28 G 36 mph
Barometer 30.14 in (1019.5 mb)
Dewpoint 62°F (17°C)
Visibility 5.00 mi
Last update 6 Aug 8:53 am CDT
Extended Forecast for

Clear Lake IA

  • Today

    Today: Showers likely and possibly a thunderstorm before 11am, then a chance of showers and thunderstorms between 11am and 1pm.  Mostly cloudy, with a high near 81. South wind around 11 mph, with gusts as high as 18 mph.  Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 81 °F

    Showers
    Likely then
    Chance
    T-storms

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly after 1am.  Mostly cloudy, with a low around 67. South southeast wind 7 to 9 mph.  New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 67 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Thursday

    Thursday: A slight chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 4pm, then a slight chance of showers and thunderstorms after 4pm.  Mostly sunny, with a high near 85. South wind 7 to 10 mph.  Chance of precipitation is 20%.

    High: 85 °F

    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: A slight chance of thunderstorms before 7pm.  Mostly clear, with a low around 69. South southeast wind around 10 mph.  Chance of precipitation is 10%.

    Low: 69 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 88. South wind 10 to 15 mph, with gusts as high as 24 mph.

    High: 88 °F

    Sunny

  • Friday Night

    Friday Night: A 40 percent chance of showers and thunderstorms after 1am.  Partly cloudy, with a low around 71. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 71 °F

    Mostly Clear
    then Chance
    T-storms

  • Saturday

    Saturday: A 50 percent chance of showers and thunderstorms.  Partly sunny, with a high near 84.

    High: 84 °F

    Chance
    Showers then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am.  Mostly cloudy, with a low around 66. Chance of precipitation is 60%.

    Low: 66 °F

    Chance
    T-storms then
    Showers
    Likely

  • Sunday

    Sunday: A 30 percent chance of showers before 1pm.  Partly sunny, with a high near 84.

    High: 84 °F

    Chance
    Showers

Detailed Forecast

Today
Showers likely and possibly a thunderstorm before 11am, then a chance of showers and thunderstorms between 11am and 1pm. Mostly cloudy, with a high near 81. South wind around 11 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 67. South southeast wind 7 to 9 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
A slight chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 4pm, then a slight chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 85. South wind 7 to 10 mph. Chance of precipitation is 20%.
Thursday Night
A slight chance of thunderstorms before 7pm. Mostly clear, with a low around 69. South southeast wind around 10 mph. Chance of precipitation is 10%.
Friday
Sunny, with a high near 88. South wind 10 to 15 mph, with gusts as high as 24 mph.
Friday Night
A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 71. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 84.
Saturday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 66. Chance of precipitation is 60%.
Sunday
A 30 percent chance of showers before 1pm. Partly sunny, with a high near 84.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Chance of precipitation is 50%.
Monday
A 30 percent chance of showers. Partly sunny, with a high near 81.
Monday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 63.
Tuesday
Mostly sunny, with a high near 82.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Clear Lake IA
 43.13°N 93.37°W
8:21 am CDT Aug 6, 2025
9am CDT Aug 6, 2025-6pm CDT Aug 12, 2025
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database