What is today's weather forecast for Grassy Key, FL?

Today's forecast for Grassy Key shows a high of 81 degrees and a low of 69 degrees Fahrenheit. Sunny, with a high near 81.

What is the 7-day weather forecast for Grassy Key, FL?

The 7-day forecast for Grassy Key shows highs from 68 to 81 degrees and lows from 56 to 70 degrees Fahrenheit. Expect precipitation on 2 days with chances of 20% or higher.

Will it rain in Grassy Key, FL this week?

Yes, rain is possible in Grassy Key this week. Precipitation chances: Sunday (26% chance), Monday (34% chance).

How accurate is the Grassy Key weather forecast?

WeatherForYou provides highly accurate Grassy Key forecasts using National Weather Service data and current conditions from the nearest available weather stations, often miles closer than regional airports, for the most precise local forecasts.

Grassy Key, FL Weather Forecast and Current Conditions

WEATHER ALERTS - Small Craft Advisory

Current Conditions From Nearby Local Station

69°F
Feels Like 69°F

Humidity N/A Dew Point N/A Wind NE 17 MPH Gusts 20 Barometer 30.16 in.766.1 mm

Solar Rad 421 w/m2

Report from a MADIS/MESONET station 1.3 miles NNE of central Grassy Key
at 10:00 AM Sat, Oct 25, 2025

WEATHER ALERTS - Small Craft Advisory

Current Conditions From Nearby Local Station

69°F
Feels Like 69°F

Humidity N/A Dew Point N/A Wind NE 17 MPH Gusts 20 Barometer 30.16 in.766.1 mm

Solar Rad 421 w/m2

Report from a MADIS/MESONET station 1.3 miles NNE of central Grassy Key
at 10:00 AM Sat, Oct 25, 2025

Point Forecast at a Glance

SatOct 25

81°

69°

SunOct 26

81°

70°

MonOct 27

30%

77°

65°

TueOct 28

75°

63°

WedOct 29

20%

74°

62°

ThuOct 30

69°

58°

FriOct 31

68°

56°

7-Day Temperature Trend

Week Ahead Summary

Cooling trend continues with high temperatures dropping from 81°F to 68°F. Some rain possible with at least 2 days showing precipitation chances of 20% or higher.

Climate Context

This week's forecast shows temperatures running 6°F below the historical average for October. Normal highs for this period are around 81°F with lows around 62°F.

This Date in Weather History

1921 - A hurricane with 100 mph winds hit Tampa, FL, causing several million dollars damage.

Grassy Key 7 Day Weather Forecast Details

Saturday Oct 25

Day: Sunny, with a high near 81. East northeast wind around 15 mph, with gusts as high as 21 mph.

Night: Partly cloudy, with a low around 69. East northeast wind 13 to 18 mph, with gusts as high as 24 mph.

Sunday Oct 26

Day: Mostly sunny, with a high near 81. East northeast wind 12 to 15 mph, with gusts as high as 18 mph.

Night: A chance of rain showers after 8pm. Mostly cloudy, with a low around 70. East northeast wind 10 to 15 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.

Monday Oct 27

Day: A chance of rain showers. Partly sunny, with a high near 77. South southeast wind around 12 mph. Chance of precipitation is 30%.

Night: A slight chance of rain showers before 8pm. Partly cloudy, with a low around 65. North northeast wind around 12 mph. Chance of precipitation is 20%.

Tuesday Oct 28

Day: Mostly sunny, with a high near 75. North northeast wind 12 to 15 mph, with gusts as high as 20 mph.

Night: Partly cloudy, with a low around 63. North northeast wind 12 to 16 mph, with gusts as high as 21 mph.

Wednesday Oct 29

Day: A slight chance of rain showers after 2pm. Mostly sunny, with a high near 74. South southeast wind 10 to 17 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.

Night: A slight chance of rain showers before 2am. Partly cloudy, with a low around 62. Chance of precipitation is 20%.