GRASSY KEY, FL 33050 Weather Forecast & Current Conditions

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MARATHON KEY ARPT, FL
Current Weather

2:53 AM EDT JUL 12, 2025
Few Clouds
84°F
Feels Like: 96°F
Dewpoint: 79°F
Rel. Hum.: 85%
Visibility: 10 miles
Wind: ESE at 13 mph
Pressure: 30.06 inches
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GRASSY KEY, FL 33050
Weather Forecast

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TONIGHT
Partly cloudy with a chance of showers and a slight chance of thunderstorms. Lows in the lower 80s. East to southeast winds near 10 mph. Chance of rain 30 percent.
SATURDAY
Partly cloudy with a chance of showers and a slight chance of thunderstorms. Highs in the upper 80s. East to southeast winds near 10 mph, decreasing to 5 to 10 mph. Chance of rain 30 percent.
SATURDAY NIGHT AND SUNDAY
Partly cloudy with a chance of showers and a slight chance of thunderstorms. Lows in the lower 80s. Highs in the upper 80s. East to southeast winds 5 to 10 mph. Chance of rain 30 percent.
SUNDAY NIGHT
Partly cloudy with a chance of showers and a slight chance of thunderstorms. Lows in the lower 80s. Variable winds near 5 mph. Chance of rain 30 percent.
MONDAY AND MONDAY NIGHT
Partly cloudy with a chance of showers and a slight chance of thunderstorms. Highs in the upper 80s. Lows in the lower 80s. Chance of rain 30 percent.
TUESDAY THROUGH THURSDAY
Partly to mostly cloudy with a chance of showers and a slight chance of thunderstorms. Highs in the upper 80s. Lows in the lower 80s. Chance of rain 40 percent.
THURSDAY NIGHT AND FRIDAY
Partly cloudy with a chance of showers and a slight chance of thunderstorms. Lows in the lower 80s. Highs in the upper 80s. Chance of rain 30 percent.

Visible Weather Satellite
GRASSY KEY, FL 33050
Infrared Weather Satellite
GRASSY KEY, FL 33050
NEXRAD Weather Radar
GRASSY KEY, FL 33050

MARATHON KEY ARPT, FL 3 hourly weather forecast

weather forecast created  8:00 PM EDT  7/11/2025
Saturday
12 JUL 2025
GRASSY KEY, FL 33050 weather forecast Day 1, 0 hours 2 AM 84° 94° Partly Cloudy 15%
RAIN
***
0% Thunder
( 30% severe)
ESE   10 80% 77°
Low 83° GRASSY KEY, FL 33050 weather forecast Day 1, 3 hours 5 AM 84° 94° Partly Cloudy SE   9 80% 77°
High 89° GRASSY KEY, FL 33050 weather forecast Day 1, 6 hours 8 AM 85° 96° Partly Cloudy 32%
RAIN
.25–.5 in
0% Thunder
( 40% severe)
SE   8 77% 77°

Partly Cloudy

Chance of Rain

GRASSY KEY, FL 33050 weather forecast Day 1, 9 hours 11 AM 87° 100° Partly Cloudy SE   8 75% 78°
GRASSY KEY, FL 33050 weather forecast Day 1, 12 hours 2 PM 87° 99° Partly Cloudy 30%
RAIN
.01–.1 in
0% Thunder
( 48% severe)
ESE   8 72% 77°
GRASSY KEY, FL 33050 weather forecast Day 1, 15 hours 5 PM 87° 99° Partly Cloudy E   7 72% 77°
GRASSY KEY, FL 33050 weather forecast Day 1, 18 hours 8 PM 86° 97° Mostly Cloudy 10%
RAIN
<.01 in
0% Thunder
( 45% severe)
E   7 75% 77°
GRASSY KEY, FL 33050 weather forecast Day 1, 21 hours 11 PM 84° 94° Partly Cloudy ESE   6 80% 77°
Sunday
13 JUL 2025
GRASSY KEY, FL 33050 weather forecast Day 2, 0 hours 2 AM 83° 92° Partly Cloudy 13%
RAIN
<.01 in
0% Thunder
( 34% severe)
SE   6 82% 77°
Low 82° GRASSY KEY, FL 33050 weather forecast Day 2, 3 hours 5 AM 83° 91° Partly Cloudy SE   5 80% 76°
High 89° GRASSY KEY, FL 33050 weather forecast Day 2, 6 hours 8 AM 84° 94° Mostly Cloudy 32%
RAIN
.01–.1 in
0% Thunder
( 39% severe)
ESE   3 80% 77°

Mostly Cloudy

Chance of Rain

GRASSY KEY, FL 33050 weather forecast Day 2, 9 hours 11 AM 87° 98° Partly Cloudy E   5 70% 76°
GRASSY KEY, FL 33050 weather forecast Day 2, 12 hours 2 PM 86° 96° Mostly Cloudy 23%
RAIN
<.01 in
0% Thunder
( 48% severe)
SE   6 72% 76°
GRASSY KEY, FL 33050 weather forecast Day 2, 15 hours 5 PM 86° 96° Partly Cloudy S   3 72% 76°
GRASSY KEY, FL 33050 weather forecast Day 2, 18 hours 8 PM 85° 93° Mostly Cloudy 22%
RAIN
<.01 in
0% Thunder
( 35% severe)
ENE   2 72% 75°
GRASSY KEY, FL 33050 weather forecast Day 2, 21 hours 11 PM 84° 92° Mostly Cloudy E   2 74% 75°

MARATHON KEY ARPT, FL extended weather forecast

BAD DAY
BAD DATE
BAD DAY
BAD DATE
BAD DAY
BAD DATE
BAD DAY
BAD DATE
BAD DAY
BAD DATE
Low 81° Low 78° Low 77° Low 79° Low 80°
High 92° High 91° High 87° High 88° High 92°
GRASSY KEY, FL 33050 weather forecast Day 3 GRASSY KEY, FL 33050 weather forecast Day 4 GRASSY KEY, FL 33050 weather forecast Day 5 GRASSY KEY, FL 33050 weather forecast Day 6 GRASSY KEY, FL 33050 weather forecast Day 7
Partly Cloudy
68% Rain
Overcast
58% Rain
Overcast
66% Rain
Overcast
66% Rain
Partly Cloudy
43% Rain
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