Nearby Harbors
24.7717’ N, 80.9400’ W

Grassy Key, north side, Florida Bay, FL

75°
H 82°
L 77°
N
16mph
Low tide
11:48 am
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Grassy Key, north side, Florida Bay, FL Weather Forecast and Current Conditions

Day Sky High / Low Precip Wind Humidity
Tue
Oct 27 		Partly Cloudy/Wind
Close Hourly 		82º / 77º 24% NNE 20 mph 80%
6am Partly Cloudy 75º 3% N 16 mph 87%
7am Partly Cloudy 75º 4% N 16 mph 87%
8am Partly Cloudy 75º 3% N 16 mph 87%
9am Partly Cloudy 76º 3% N 18 mph 84%
10am Partly Cloudy 78º 3% N 18 mph 81%
11am Partly Cloudy 79º 4% N 18 mph 77%
12pm Partly Cloudy 81º 15% N 18 mph 74%
1pm Mostly Cloudy 81º 15% NNE 18 mph 75%
2pm Mostly Cloudy 81º 20% NNE 17 mph 75%
3pm Mostly Cloudy 82º 18% NNE 18 mph 75%
4pm Mostly Cloudy 82º 15% NNE 17 mph 75%
5pm Mostly Cloudy 82º 15% NNE 18 mph 74%
6pm Mostly Cloudy 81º 24% N 18 mph 76%
7pm Mostly Cloudy 80º 24% N 19 mph 80%
8pm Mostly Cloudy/Wind 79º 23% N 20 mph 81%
9pm Mostly Cloudy/Wind 79º 22% N 20 mph 82%
10pm Mostly Cloudy/Wind 78º 9% N 20 mph 84%
11pm Mostly Cloudy/Wind 78º 9% N 20 mph 85%
Wed
Oct 28 		Partly Cloudy
View Hourly 		83º / 78º 21% NE 14 mph 83%
12am Mostly Cloudy 78º 24% N 19 mph 86%
1am Mostly Cloudy 78º 13% N 18 mph 87%
2am Partly Cloudy 78º 21% N 18 mph 88%
3am Mostly Cloudy 78º 19% N 17 mph 89%
4am Mostly Cloudy 78º 19% N 17 mph 89%
5am Mostly Cloudy 78º 15% N 16 mph 89%
6am Mostly Cloudy 78º 20% N 15 mph 90%
7am Mostly Cloudy 78º 14% N 14 mph 90%
8am Partly Cloudy 78º 20% NNE 14 mph 89%
9am Partly Cloudy 79º 21% NNE 14 mph 89%
10am Partly Cloudy 79º 17% NNE 13 mph 87%
11am Mostly Cloudy 80º 12% NNE 12 mph 84%
12pm Mostly Cloudy 81º 15% NE 11 mph 82%
1pm Partly Cloudy 82º 15% NE 10 mph 80%
2pm Partly Cloudy 82º 15% NE 9 mph 80%
3pm Mostly Cloudy 82º 15% ENE 10 mph 80%
4pm Mostly Cloudy 82º 15% ENE 10 mph 78%
5pm Partly Cloudy 82º 12% ENE 10 mph 77%
6pm Partly Cloudy 82º 12% ENE 9 mph 79%
7pm Partly Cloudy 82º 9% ENE 9 mph 80%
8pm Mostly Cloudy 81º 14% ENE 9 mph 81%
9pm Mostly Cloudy 81º 10% ENE 10 mph 81%
10pm Partly Cloudy 81º 9% ENE 9 mph 81%
11pm Mostly Cloudy 81º 9% ENE 9 mph 82%
Thu
Oct 29 		Partly Cloudy
View Hourly 		83º / 79º 24% E 8 mph 82%
12am Partly Cloudy 81º 13% ENE 10 mph 82%
1am Partly Cloudy 80º 15% E 10 mph 84%
2am Partly Cloudy 80º 14% ENE 10 mph 84%
3am Partly Cloudy 80º 19% ENE 9 mph 84%
4am Partly Cloudy 80º 24% ENE 8 mph 85%
5am Partly Cloudy 80º 24% ENE 8 mph 85%
Fri
Oct 30 		Partly Cloudy 83º / 79º 24% ENE 9 mph 81%
Sat
Oct 31 		Partly Cloudy 83º / 79º 24% E 10 mph 80%
Sun
Nov 1 		Partly Cloudy 83º / 78º 15% E 9 mph 78%
Mon
Nov 2 		Mostly Sunny 82º / 78º 14% ENE 7 mph 79%
Tue
Nov 3 		Partly Cloudy 82º / 78º 22% NE 6 mph 78%

Weather Radar for Grassy Key, north side, Florida Bay, FL See Radar

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* Playback displays weather for the past 6 hours.

NOAA Weather Marine Forecast for Grassy Key, north side, Florida Bay, FL

Today
High : 82ºF
NNE wind around 15 kt. A chance of showers and thunderstorms. Seas 1 ft or less.
Tonight
Low : 76ºF
N wind 10 to 15 kt. A chance of showers. Seas 1 ft or less.
Wednesday
High : 84ºF
N wind 5 to 10 kt becoming variable and less than 5 kt in the morning. A chance of showers and thunderstorms. Seas 1 ft or less.
Wednesday Night
Low : 77ºF
Variable winds 5 kt or less. A slight chance of showers and thunderstorms. Seas 1 ft or less.
Thursday
High : 85ºF
Variable winds 5 kt or less. A slight chance of showers and thunderstorms. Seas 1 ft or less.
Thursday Night
Low : 77ºF
Variable winds 5 kt or less. A slight chance of showers and thunderstorms. Seas 1 ft or less.
Friday
High : 85ºF
Variable winds 5 kt or less. A slight chance of showers and thunderstorms. Seas 1 ft or less.
Friday Night
Low : 77ºF
ENE wind around 10 kt. A slight chance of showers. Seas 1 ft or less.
Saturday
High : 82ºF
E wind 5 to 10 kt. A slight chance of showers. Seas 1 ft or less.

NOAA Buoy Data Near Grassy Key, north side, Florida Bay, FL See Map

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    Wind Speed Forecast for Grassy Key, north side, Florida Bay, FL

    TuesdayWednesdayThursday
    Wind Speed (MPH) 161817182018151399910
    10am2pm6pm10pm2am6am10am2pm6pm10pm2am6am
    MPH 161817182018151399910
    DIR NNNNENNNNNNENEENEENEENE

    Current Weather Conditions In Grassy Key, north side, Florida Bay, FL

    As Of: 4 minutes ago

    • 75ºF
    • 75ºF
    • 16mph
    • 0º (N)
    • 21mph
    • Partly Cloudy
    • 10mi
    • 29.88"
    • 87%
    • 0ºF

    The weather right now in Grassy Key, north side, Florida Bay, FL is Partly Cloudy. The current temperature is 75°F, and the expected high and low for today, Tuesday, October 27, 2026, are 82° high temperature and 77°F low temperature. The wind is currently blowing at 16 miles per hour, and coming from the North. The wind is gusting to 21 mph. With the wind and the atmosphere the temperature feels like 75° Fahrenheit. Expected precipitation is 3 percent, with current humidity at 87 percent, and air pressure at 29.88 in. Visibility is 10 nautical miles. There are 2 current weather alert(s).

    Weather Alerts
    Coastal Flood Warning - 4:00am Tue Oct 27 2026

    ...COASTAL FLOOD WARNING IN EFFECT...

    WHAT: Major saltwater flooding.

    WHERE: Florida Keys.

    WHEN: Until 5 AM EDT Wednesday, especially at the times of high
    tide with little relief at the times of low tide, especially in
    the Upper Keys.

    IMPACTS: Numerous roads may be closed. Low lying property
    including homes, businesses, and some critical infrastructure
    will be inundated. Some shoreline erosion will occur.

    PRECAUTIONARY / PREPAREDNESS ACTIONS:

    Take the necessary actions to protect flood-prone property. If
    travel is required, do not drive around barricades or through
    water of unknown depth.

    &&

    Small Craft Advisory - 4:25am Tue Oct 27 2026

    ...SMALL CRAFT ADVISORY IN EFFECT... ...GALE WARNING IS CANCELLED...

    WHAT: North to northeast winds 20 to 25 kt with gusts up to 30
    kt and seas 8 to 11 ft, especially the extreme western Straits
    and SE Gulf.

    WHERE: Hawk Channel from Craig Key to Halfmoon Shoal, Gulf
    waters including the Dry Tortugas, Florida Bay, Straits of
    Florida from Halfmoon Shoal to 20 NM west of Dry Tortugas out
    20 NM, and Straits of Florida from Halfmoon Shoal to 20 NM
    west of Dry Tortugas 20 to 60 NM out.

    WHEN: In Effect.

    IMPACTS: A Small Craft Advisory means that wind speeds of 20
    to 33 knots, or seas of 7 feet or greater, are expected to
    produce hazardous conditions for small craft. These hazardous
    conditions may result in poor vessel handling and steering
    response, broaching, overturned dinghies and kayaks, slips and
    falls on slippery decks, rub damage along docks and seawalls,
    swamped bows at reef tract mooring balls, and dragging anchors.

    PRECAUTIONARY / PREPAREDNESS ACTIONS:

    Inexperienced boaters, especially those with smaller vessels,
    should avoid operating in these conditions.

    &&

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