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

Flooding Possible in the Southwest U.S.; Coastal Storm to Impact the East

Heavy to excessive rainfall is expected today into Wednesday over New Mexico into far west Texas. Flash flooding and debris flows in wildfire burn areas will be possible. A strong coastal storm will develop off the Mid-Atlantic coast Wednesday, intensifying toward southern New England this weekend. Significant coastal flooding, strong rip currents, and beach erosion from high surf expected. Read More >

Current conditions at

Mason City Municipal Airport (KMCW)

Lat: 43.15°NLon: 93.33°WElev: 1188ft.

Overcast

52°F

11°C

Humidity 93%
Wind Speed E 9 mph
Barometer 30.30 in (1025.9 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Wind Chill49°F (9°C)
Last update 22 Sep 8:53 am CDT
Extended Forecast for

Clear Lake IA

  • Today

    Today: Mostly cloudy, with a high near 59. East wind around 9 mph.

    High: 59 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 43. East wind 3 to 6 mph.

    Low: 43 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 64. Southeast wind 5 to 8 mph.

    High: 64 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 49. East southeast wind 5 to 7 mph.

    Low: 49 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 50 percent chance of showers before 1pm. Mostly cloudy, with a high near 64. South southeast wind around 7 mph. New precipitation amounts of less than a tenth of an inch possible.

    High: 64 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 50.

    Low: 50 °F

    Mostly Cloudy

  • Friday

    Friday: A 30 percent chance of showers after 1pm. Mostly cloudy, with a high near 66.

    High: 66 °F

    Mostly Cloudy
    then Chance
    Showers

  • Friday Night

    Friday Night: A 50 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 51.

    Low: 51 °F

    Mostly Cloudy
    then Chance
    Showers

  • Saturday

    Saturday: Showers likely, mainly before 1pm. Cloudy, with a high near 64. Chance of precipitation is 70%.

    High: 64 °F

    Showers
    Likely

Detailed Forecast

Today
Mostly cloudy, with a high near 59. East wind around 9 mph.
Tonight
Mostly cloudy, with a low around 43. East wind 3 to 6 mph.
Wednesday
Mostly sunny, with a high near 64. Southeast wind 5 to 8 mph.
Wednesday Night
Mostly cloudy, with a low around 49. East southeast wind 5 to 7 mph.
Thursday
A 50 percent chance of showers before 1pm. Mostly cloudy, with a high near 64. South southeast wind around 7 mph. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
Mostly cloudy, with a low around 50.
Friday
A 30 percent chance of showers after 1pm. Mostly cloudy, with a high near 66.
Friday Night
A 50 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 51.
Saturday
Showers likely, mainly before 1pm. Cloudy, with a high near 64. Chance of precipitation is 70%.
Saturday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 53.
Sunday
Partly sunny, with a high near 71.
Sunday Night
Mostly cloudy, with a low around 55.
Monday
Partly sunny, with a high near 73.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Clear Lake IA
 43.13°N 93.4°W
Last Update:
6:46 am CDT Sep 22, 2026
Forecast Valid:
9am CDT Sep 22, 2026-6pm CDT Sep 28, 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