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

Heavy Great Lakes Snow through Friday; Extreme Cold and Potential for Major Winter Storm Late Week into this Weekend

Multiple clipper systems will bring cold temperatures and enhance lake-effect snow downwind of the Great Lakes. An arctic blast will bring frigid temperatures accompanied with gusty winds that may lead to dangerous wind chills beginning in the Northern Plains Thursday before expanding to the South and East. An expansive winter storm will start Friday in the Southern Rockies/Plains and Mid-South. Read More >

Current conditions at

Key West Naval Air Station (KNQX)

Lat: 24.58°NLon: 81.68°WElev: 3ft.

A Few Clouds

66°F

19°C

Humidity 68%
Wind Speed NE 13 G 25 mph
Barometer 30.28 in (1025.1 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 20 Jan 9:53 pm EST
Extended Forecast for

Big Coppitt Key FL

  • Tonight

    Tonight: Partly cloudy, with a low around 66. Breezy, with a northeast wind around 20 mph.

    Low: 66 °F

    Partly Cloudy
    and Breezy

  • Wednesday

    Wednesday: A slight chance of showers. Mostly sunny, with a high near 77. Northeast wind around 15 mph. Chance of precipitation is 10%.

    High: 77 °F

    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers. Mostly cloudy, with a low around 69. Northeast wind around 15 mph. Chance of precipitation is 30%.

    Low: 69 °F

    Chance
    Showers

  • Thursday

    Thursday: A chance of showers. Partly sunny, with a high near 78. Northeast wind around 10 mph. Chance of precipitation is 30%.

    High: 78 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A slight chance of showers. Partly cloudy, with a low around 71. East wind around 10 mph. Chance of precipitation is 20%.

    Low: 71 °F

    Slight Chance
    Showers

  • Friday

    Friday: A slight chance of showers. Mostly sunny, with a high near 79. Chance of precipitation is 20%.

    High: 79 °F

    Slight Chance
    Showers

  • Friday Night

    Friday Night: A slight chance of showers. Mostly clear, with a low around 71. Chance of precipitation is 10%.

    Low: 71 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Saturday Night

    Saturday Night: A slight chance of showers. Mostly clear, with a low around 72. Chance of precipitation is 10%.

    Low: 72 °F

    Slight Chance
    Showers

Detailed Forecast

Tonight
Partly cloudy, with a low around 66. Breezy, with a northeast wind around 20 mph.
Wednesday
A slight chance of showers. Mostly sunny, with a high near 77. Northeast wind around 15 mph. Chance of precipitation is 10%.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 69. Northeast wind around 15 mph. Chance of precipitation is 30%.
Thursday
A chance of showers. Partly sunny, with a high near 78. Northeast wind around 10 mph. Chance of precipitation is 30%.
Thursday Night
A slight chance of showers. Partly cloudy, with a low around 71. East wind around 10 mph. Chance of precipitation is 20%.
Friday
A slight chance of showers. Mostly sunny, with a high near 79. Chance of precipitation is 20%.
Friday Night
A slight chance of showers. Mostly clear, with a low around 71. Chance of precipitation is 10%.
Saturday
Sunny, with a high near 80.
Saturday Night
A slight chance of showers. Mostly clear, with a low around 72. Chance of precipitation is 10%.
Sunday
A slight chance of showers. Sunny, with a high near 80. Chance of precipitation is 10%.
Sunday Night
A slight chance of showers. Mostly clear, with a low around 67. Chance of precipitation is 10%.
Monday
A slight chance of showers. Mostly sunny, with a high near 77. Chance of precipitation is 10%.
Monday Night
A slight chance of showers. Mostly clear, with a low around 64. Chance of precipitation is 10%.
Tuesday
A slight chance of showers. Mostly sunny, with a high near 72. Chance of precipitation is 10%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Big Coppitt Key FL
 24.59°N 81.67°W (Elev. 3 ft)
Last Update:
9:15 pm EST Jan 20, 2026
Forecast Valid:
10pm EST Jan 20, 2026-6pm EST Jan 27, 2026
 
Forecast Discussion
 
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Additional Resources

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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