Marine Weather Net

Grassy Key, FL Weather Forecast




Grassy Key, Florida

 Lat: 24.72N, Lon: 81.05W

Current Conditions Updated: 753 AM EST TUE NOV 4 2025

Mostly Clear
Temp: 73°F
  • Humidity:
  • 90%
  • Winds:
  • 10 MPH NNE
  • Gusts:
  • 18 MPH
  • Barometer:
  • 30.16 in.
  • Dewpoint:
  • 70°F
  • Heat index:
  • 73°F

  • Sunrise:
  • 6:31 AM EST
  • Sunset:
  • 5:41 PM EST
  • Moonrise:
  • 4:57 PM EST
  • Moonset:
  • 5:26 AM EST

TODAY

PARTLY SUNNY
Hi: 80°F
Lo: 75°F

WEDNESDAY

MOSTLY CLOUDY
Hi: 81°F
Lo: 75°F

THURSDAY

CHANCE OF SHOWERS
Hi: 81°F
Lo: 75°F
Precip: 10%

SATURDAY

CHANCE OF SHOWERS
Hi: 83°F
Lo: 75°F
Precip: 20%
Weather Forecast In Detail:
Forecast Issued: 400 AM EST Tue Nov 04 2025

Today...Partly sunny this morning, then becoming mostly cloudy. Breezy. Highs near 80. Northeast winds 15 to 20 mph, becoming northeast to east.
Tonight...Mostly cloudy. Breezy in the evening. Lows in the mid 70s. Northeast to east winds 15 to 20 mph, Decreasing to near 15 mph.
Wednesday...Mostly cloudy. Highs in the lower 80s. Northeast to east winds near 15 mph, Decreasing to 10 to 15 mph.
Wednesday Night...Mostly cloudy with a slight chance of showers. Lows in the mid 70s. Northeast to east winds 10 to 15 mph. Chance of rain 10 percent.
Thursday...Mostly cloudy with a slight chance of showers. Highs in the lower 80s. Northeast to east winds near 10 mph. Chance of rain 10 percent.
Thursday Night And Friday...Mostly cloudy with a slight chance of showers. Lows in the mid 70s. Highs in the lower 80s. Chance of rain 20 percent.
Friday Night...Partly cloudy with a slight chance of showers. Lows in the mid 70s. Chance of rain 20 percent.
Saturday...Mostly clear with a slight chance of showers. Highs in the lower to mid 80s. Lows in the mid 70s. Chance of rain 20 percent.
Sunday...Mostly clear with a slight chance of showers. Highs in the lower to mid 80s. Lows in the mid 70s. Chance of rain 20 percent.
Sunday Night...Partly cloudy with a slight chance of showers. Lows in the mid 70s. Chance of rain 10 percent.
Monday...Partly cloudy with a slight chance of showers. Becoming breezy. Highs in the lower 80s. Chance of rain 20 percent.
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