Big Coppitt Key, Waltz Key Basin, FL Weather Forecast and Current Conditions

Day Sky High / Low Precip Wind Humidity
Wed
Jul 15 		Partly Cloudy
Close Hourly 		90º / 83º 3% ESE 15 mph 66%
9am Partly Cloudy 86º 2% ENE 13 mph 72%
10am Partly Cloudy 87º 2% E 13 mph 69%
11am Partly Cloudy 88º 2% E 13 mph 66%
12pm Partly Cloudy 89º 2% E 15 mph 64%
1pm Partly Cloudy 90º 2% ESE 15 mph 64%
2pm Partly Cloudy 90º 1% ESE 15 mph 63%
3pm Partly Cloudy 90º 1% ESE 15 mph 64%
4pm Partly Cloudy 90º 3% ESE 15 mph 64%
5pm Partly Cloudy 89º 3% ESE 15 mph 65%
6pm Partly Cloudy 89º 3% ESE 12 mph 66%
7pm Partly Cloudy 87º 3% ESE 12 mph 68%
8pm Partly Cloudy 86º 8% ESE 10 mph 71%
9pm Partly Cloudy 85º 4% ESE 10 mph 73%
10pm Partly Cloudy 85º 3% ESE 10 mph 74%
11pm Partly Cloudy 84º 3% ESE 8 mph 74%
Thu
Jul 16 		Partly Cloudy
View Hourly 		90º / 83º 4% ENE 10 mph 65%
12am Partly Cloudy 84º 4% E 8 mph 76%
1am Partly Cloudy 84º 3% E 8 mph 74%
2am Partly Cloudy 84º 3% ENE 7 mph 74%
3am Partly Cloudy 84º 3% E 7 mph 73%
4am Partly Cloudy 84º 3% ENE 7 mph 73%
5am Partly Cloudy 84º 3% ENE 7 mph 74%
6am Partly Cloudy 84º 4% ENE 6 mph 75%
7am Mostly Cloudy 84º 4% ENE 7 mph 75%
8am Mostly Cloudy 85º 4% ENE 7 mph 74%
9am Mostly Cloudy 87º 4% ENE 8 mph 70%
10am Cloudy 88º 3% ENE 9 mph 67%
11am Mostly Cloudy 89º 3% ENE 9 mph 64%
12pm Mostly Cloudy 89º 3% ENE 10 mph 63%
1pm Cloudy 90º 3% ENE 10 mph 62%
2pm Mostly Cloudy 90º 3% E 10 mph 61%
3pm Mostly Cloudy 90º 3% E 9 mph 61%
4pm Mostly Cloudy 90º 3% E 9 mph 61%
5pm Mostly Cloudy 89º 3% ENE 8 mph 62%
6pm Partly Cloudy 89º 3% ENE 7 mph 63%
7pm Partly Cloudy 88º 3% E 7 mph 65%
8pm Partly Cloudy 87º 3% ENE 6 mph 67%
9pm Partly Cloudy 86º 3% ENE 5 mph 69%
10pm Partly Cloudy 86º 3% ENE 5 mph 70%
11pm Partly Cloudy 85º 3% ENE 5 mph 71%
Fri
Jul 17 		Partly Cloudy
View Hourly 		90º / 82º 15% ESE 7 mph 66%
12am Partly Cloudy 85º 3% ENE 5 mph 72%
1am Mostly Cloudy 85º 3% E 4 mph 71%
2am Partly Cloudy 84º 3% ENE 4 mph 72%
3am Partly Cloudy 84º 3% E 4 mph 72%
4am Partly Cloudy 84º 3% E 4 mph 73%
5am Partly Cloudy 84º 3% E 3 mph 73%
6am Partly Cloudy 84º 4% ENE 3 mph 74%
7am Partly Cloudy 84º 4% ENE 3 mph 74%
8am Partly Cloudy 85º 3% ENE 4 mph 72%
Sat
Jul 18 		Partly Cloudy 89º / 82º 16% S 8 mph 66%
Sun
Jul 19 		Partly Cloudy 89º / 83º 11% SW 12 mph 67%
Mon
Jul 20 		Partly Cloudy 89º / 83º 16% SW 14 mph 67%
Tue
Jul 21 		Partly Cloudy 89º / 83º 17% SSW 12 mph 66%
Wed
Jul 22 		Partly Cloudy 89º / 83º 10% SSE 9 mph 65%

Weather Radar for Big Coppitt Key, Waltz Key Basin, FL See Radar

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NOAA Weather Marine Forecast for Big Coppitt Key, Waltz Key Basin, FL

Today
High : 91ºF
E wind 5 to 10 kt. A slight chance of showers and thunderstorms after 7am. Seas 1 ft or less.
Tonight
Low : 84ºF
E wind 5 to 10 kt. A slight chance of showers and thunderstorms. Seas 1 ft or less.
Thursday
High : 91ºF
Variable winds 5 kt or less. A slight chance of showers and thunderstorms. Seas 1 ft or less.
Thursday Night
Low : 83ºF
Variable winds 5 kt or less. A slight chance of showers and thunderstorms. Seas 1 ft or less.
Friday
High : 91ºF
Variable winds 5 kt or less. A slight chance of showers and thunderstorms. Seas 1 ft or less.
Friday Night
Low : 84ºF
Variable winds 5 kt or less. A slight chance of showers and thunderstorms. Seas 1 ft or less.
Saturday
High : 91ºF
Variable winds 5 kt or less. A slight chance of showers and thunderstorms. Seas 1 ft or less.
Saturday Night
Low : 83ºF
Variable winds 5 kt or less. Partly cloudy. Seas 1 ft or less.
Sunday
High : 90ºF
Variable winds 5 kt or less. Mostly sunny. Seas 1 ft or less.

NOAA Buoy Data Near Big Coppitt Key, Waltz Key Basin, FL See Map

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    Wind Speed Forecast for Big Coppitt Key, Waltz Key Basin, FL

    WednesdayThursdayFriday
    Wind Speed (MPH) 13151510878108543
    1pm5pm9pm1am5am9am1pm5pm9pm1am5am9am
    MPH 13151510878108543
    DIR ENEESEESEESEEENEENEENEENEENEEE

    Current Weather Conditions In Big Coppitt Key, Waltz Key Basin, FL

    As Of: 7 minutes ago

    • 86ºF
    • 96ºF
    • 13mph
    • 0º (ENE)
    • 13mph
    • Partly Cloudy
    • 10mi
    • 30.09"
    • 72%
    • 0ºF

    The weather right now in Big Coppitt Key, Waltz Key Basin, FL is Partly Cloudy. The current temperature is 86°F, and the expected high and low for today, Wednesday, July 15, 2026, are 90° high temperature and 83°F low temperature. The wind is currently blowing at 13 miles per hour, and coming from the East Northeast. The wind is gusting to 13 mph. With the wind and the atmosphere the temperature feels like 96° Fahrenheit. Expected precipitation is 2 percent, with current humidity at 72 percent, and air pressure at 30.09 in. Visibility is 10 nautical miles. There are 1 current weather alert(s).

    Weather Alerts
    Coastal Flood Statement - 4:02am Wed Jul 15 2026

    ...COASTAL FLOOD STATEMENT REMAINS IN EFFECT UNTIL NOON EDT TODAY...

    WHAT: Minor saltwater flooding.

    WHERE: Lower Florida Keys.

    WHEN: Until noon EDT today.

    IMPACTS: Minor saltwater flooding of low elevation streets
    and lots is likely. Some storm drains will overflow, and some
    seawalls and docks will be overtopped. Boaters can expect less
    clearance under fixed bridges. Motorists should remember that
    persistent puddles around the times of high tide are almost
    certain to contain a mix of saltwater.

    PRECAUTIONARY / PREPAREDNESS ACTIONS:

    Do not drive through flooded roadways.

    &&