Weather World
Grassy Key, FL 7-Day Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Grassy Key Weather Forecast
Grassy Key, FL Weather Forecast Date: 344 AM EDT Sun Sep 20 2026
Weather forecast for Grassy Key, FL
Today Hi: 89°FHi: 32°C Lo: 79°F Lo: 26°C |
Today... Showers likely with a chance of thunderstorms. Highs in the upper 80s. South winds near 5 mph. Chance of rain 70%. |
| Mon Hi: 89°FHi: 32°C Lo: 80°F Lo: 27°C |
Monday... Partly cloudy with a chance of showers and thunderstorms. Highs in the upper 80s. Southwest winds 5 to 10 mph. Chance of rain 50%. |
| Tue Hi: 89°FHi: 32°C Lo: 80°F Lo: 27°C |
Tuesday... Showers likely with a chance of thunderstorms. Highs in the upper 80s. South winds 5 to 10 mph. Chance of rain 70%. |
| Wed Hi: 89°FHi: 32°C Lo: 80°F Lo: 27°C |
Wednesday... Showers likely with a chance of thunderstorms. Lows near 80. Highs in the upper 80s. Chance of rain 70%. |
| Wed Hi: 89°FHi: 32°C Lo: 80°F Lo: 27°C |
Wednesday... Showers likely with a chance of thunderstorms. Lows near 80. Highs in the upper 80s. Chance of rain 70%. |
| Thu Hi: 89°FHi: 32°C Lo: 80°F Lo: 27°C |
Thursday... Showers likely with a chance of thunderstorms. Highs in the upper 80s. Chance of rain 60%. |
| Fri Hi: 89°FHi: 32°C Lo: 80°F Lo: 27°C |
Friday... Mostly sunny with a chance of showers and thunderstorms. Highs in the upper 80s. Chance of rain 40%. |
Grassy Key Radar Loop
Use the map search tool if you want to place a location marker on the radar map...