Marine Weather Net

Grassy Key, FL Weather Forecast




Grassy Key, Florida

 Lat: 24.72N, Lon: 81.05W

Current Conditions Updated: 453 AM EST FRI FEB 27 2026

Clear


Temp: 73°F
  • Humidity:
  • 93%
  • Winds:
  • 3 MPH E
  • Gusts:
  • N/A MPH
  • Barometer:
  • 29.99 in.
  • Dewpoint:
  • 71°F
  • Heat index:
  • 73°F

  • Sunrise:
  • 6:49 AM EST
  • Sunset:
  • 6:23 PM EST
  • Moonrise:
  • 2:44 PM EST
  • Moonset:
  • 4:01 AM EST

TODAY

PARTLY SUNNY
Hi: 80°F
Lo: 70°F

SATURDAY

MOSTLY SUNNY
Hi: 80°F
Lo: 69°F
Precip: 10%

SUNDAY

MOSTLY SUNNY
Hi: 79°F
Lo: 69°F
Precip: 10%

MONDAY

MOSTLY SUNNY
Hi: 80°F
Lo: 71°F
Precip: 10%
Weather Forecast In Detail:
Forecast Issued: 401 AM EST Fri Feb 27 2026

Today...Partly sunny. Highs near 80. East to southeast winds 5 to 10 mph.
Tonight...Partly cloudy with a slight chance of showers. Lows near 70. East to southeast winds Decreasing to near 5 mph. Chance of rain 10 percent.
Saturday...Mostly sunny with a slight chance of showers. Highs near 80. Southeast winds near 5 mph. Chance of rain 10 percent.
Saturday Night...Partly cloudy with a slight chance of showers. Lows in the upper 60s. Northeast winds near 5 mph. Chance of rain 20 percent.
Sunday...Mostly sunny with a slight chance of showers. Highs in the upper 70s. Northeast winds near 5 mph. Chance of rain 10 percent.
Sunday Night...Partly cloudy with a slight chance of showers. Lows in the upper 60s. Chance of rain 20 percent.
Monday...Mostly sunny with a slight chance of showers. Highs near 80. Chance of rain 10 percent.
Monday Night...Mostly clear with a slight chance of showers. Lows in the lower 70s. Chance of rain 20 percent.
Tuesday...Mostly sunny with a slight chance of showers. Highs near 80. Chance of rain 10 percent.
Tuesday Night And Wednesday...Partly cloudy with a slight chance of showers. Lows in the lower 70s. Highs near 80. Chance of rain 20 percent.
Wednesday Night And Thursday...Partly cloudy with a slight chance of showers. Lows in the lower 70s. Highs in the lower 80s. Chance of rain 20 percent.
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