Key Largo, South Sound, FL Weather Forecast and Current Conditions

Day	Sky	High / Low	Precip	Wind	Humidity
Mon Sep 21	Isolated Thunderstorms Close Hourly	-º / 80º	33%	S 10 mph	79%
5pm	Mostly Cloudy	83º	15%	SSW 10 mph	75%
6pm	Mostly Cloudy	82º	15%	S 8 mph	75%
7pm	Partly Cloudy	82º	10%	SSW 6 mph	76%
8pm	Mostly Cloudy	81º	17%	SSW 6 mph	80%
9pm	Mostly Cloudy	81º	15%	S 6 mph	80%
10pm	Mostly Cloudy	81º	15%	S 8 mph	80%
11pm	Mostly Cloudy	81º	16%	S 7 mph	81%
Tue Sep 22	AM Thunderstorms View Hourly	84º / 79º	44%	SSW 10 mph	78%
12am	Mostly Cloudy	82º	20%	S 8 mph	79%
1am	Cloudy	82º	20%	S 9 mph	79%
2am	Mostly Cloudy	82º	24%	S 10 mph	80%
3am	Mostly Cloudy	82º	24%	S 8 mph	80%
4am	Mostly Cloudy	82º	24%	SSW 7 mph	81%
5am	Isolated Thunderstorms	82º	33%	S 8 mph	82%
6am	Isolated Thunderstorms	82º	31%	SSW 9 mph	82%
7am	Mostly Cloudy	82º	24%	SSW 9 mph	81%
8am	Mostly Cloudy	82º	24%	SSW 8 mph	81%
9am	Scattered Thunderstorms	83º	44%	SSW 8 mph	80%
10am	Scattered Thunderstorms	83º	43%	SSW 9 mph	79%
11am	Scattered Thunderstorms	83º	40%	SSW 9 mph	77%
12pm	Isolated Thunderstorms	84º	31%	SSW 10 mph	76%
1pm	Cloudy	83º	24%	SSW 9 mph	78%
2pm	Cloudy	84º	24%	SSW 10 mph	77%
3pm	Mostly Cloudy	84º	24%	SSW 10 mph	77%
4pm	Cloudy	84º	17%	SSW 10 mph	75%
5pm	Cloudy	83º	23%	SSW 10 mph	77%
6pm	Scattered Thunderstorms	84º	50%	SSW 9 mph	77%
7pm	Scattered Thunderstorms	83º	57%	S 9 mph	79%
8pm	Cloudy	82º	20%	SSW 6 mph	80%
9pm	Mostly Cloudy	82º	24%	S 6 mph	80%
10pm	Cloudy	82º	19%	S 7 mph	81%
11pm	Cloudy	82º	22%	S 7 mph	83%
Wed Sep 23	Scattered Thunderstorms View Hourly	84º / 79º	56%	SW 9 mph	81%
12am	Mostly Cloudy	82º	24%	S 7 mph	82%
1am	Scattered Thunderstorms	81º	49%	SSW 9 mph	83%
2am	Scattered Thunderstorms	81º	48%	SSW 9 mph	84%
3am	Scattered Thunderstorms	81º	53%	SSW 8 mph	84%
4am	Scattered Thunderstorms	81º	35%	SSW 7 mph	84%
5am	Scattered Thunderstorms	80º	35%	SSW 6 mph	85%
6am	Scattered Thunderstorms	80º	36%	SSW 7 mph	86%
7am	Isolated Thunderstorms	80º	32%	SSW 6 mph	86%
8am	Isolated Thunderstorms	80º	32%	SW 5 mph	86%
9am	Showers	81º	35%	SW 5 mph	84%
10am	Few Showers	83º	32%	SSW 7 mph	80%
11am	Showers	83º	37%	SSW 8 mph	78%
12pm	Cloudy	83º	24%	SW 8 mph	78%
1pm	Showers	83º	46%	SW 8 mph	80%
2pm	Scattered Thunderstorms	82º	53%	SW 9 mph	80%
3pm	Scattered Thunderstorms	82º	57%	SW 9 mph	80%
4pm	Cloudy	82º	24%	SW 8 mph	80%
Thu Sep 24	Showers	85º / 78º	50%	W 7 mph	79%
Fri Sep 25	PM Showers	85º / 78º	46%	NNE 8 mph	77%
Sat Sep 26	PM Showers	85º / 77º	36%	NNE 8 mph	74%
Sun Sep 27	Partly Cloudy	84º / 78º	24%	NNE 8 mph	73%
Mon Sep 28	Showers	83º / 78º	49%	ENE 8 mph	75%

Buoy Data
For Key Largo, South Sound, FL
Wind Forecast
In Key Largo, South Sound, FL
Radar
In Key Largo, South Sound, FL
Marine Forecast
In Key Largo, South Sound, FL

NOAA Weather Marine Forecast for Key Largo, South Sound, FL

This Afternoon

High : 88ºF
Variable winds 5 kt or less. A chance of showers and thunderstorms. Seas 1 ft or less.

Tonight

Low : 78ºF
SSE wind 5 to 10 kt. Showers likely and possibly a thunderstorm. Seas 1 ft or less.

Tuesday

High : 88ºF
SSW wind 5 to 10 kt. Showers likely and possibly a thunderstorm. Seas 1 ft or less.

Tuesday Night

Low : 77ºF
SSE wind 5 to 10 kt. Showers likely and possibly a thunderstorm. Seas 1 ft or less.

Wednesday

High : 88ºF
Variable winds 5 kt or less. Showers and possibly a thunderstorm. Seas 1 ft or less.

Wednesday Night

Low : 77ºF
Variable winds 5 kt or less. Showers likely and possibly a thunderstorm. Seas 1 ft or less.

Thursday

High : 88ºF
Variable winds 5 kt or less. Showers likely and possibly a thunderstorm. Seas 1 ft or less.

Thursday Night

Low : 79ºF
Variable winds 5 kt or less. A slight chance of showers and thunderstorms. Seas 1 ft or less.

Friday

High : 87ºF
Variable winds 5 kt or less. Showers likely and possibly a thunderstorm. Seas 1 ft or less.

Current Weather Conditions In Key Largo, South Sound, FL

As Of: 5 minutes ago

Temperature: 83ºF
Feels Like: 89ºF

Wind Speed: 10mph
Direction: 0º (SSW)
Gusts: 10mph

Cloud Cover: Mostly Cloudy
Visibility: 10mi

Pressure: 29.86"
Humidity: 75%
Dew Point: 0ºF

The weather right now in Key Largo, South Sound, FL is Mostly Cloudy. The current temperature is 83°F, and the expected high and low for today, Monday, September 21, 2026, are -° high temperature and 80°F low temperature. The wind is currently blowing at 10 miles per hour, and coming from the South Southwest. The wind is gusting to 10 mph. With the wind and the atmosphere the temperature feels like 89° Fahrenheit. Expected precipitation is 15 percent, with current humidity at 75 percent, and air pressure at 29.86 in. Visibility is 10 nautical miles. There are 1 current weather alert(s).