Key Largo, FL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Key Largo, a community in Monroe County, Florida.
Tonight
78°F
Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
Showers and thunderstorms likely before 8pm, then a chance of showers and thunderstorms. Partly cloudy, with a low around 78. East wind around 5 mph. Chance of precipitation is 60%.
7-day forecast for Key Largo
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 78°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 5 mph E | 55% |
| Saturday | 89°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 mph E | 60% |
| Saturday Night | 77°F | Showers And Thunderstorms Likely | 5 mph SE | 60% |
| Sunday | 89°F | Showers And Thunderstorms Likely | 0 to 5 mph S | 58% |
| Sunday Night | 79°F | Showers And Thunderstorms Likely | 5 mph S | 58% |
| Monday | 89°F | Showers And Thunderstorms Likely | 5 mph S | 57% |
| Monday Night | 81°F | Showers And Thunderstorms Likely | 5 to 10 mph S | 60% |
| Tuesday | 88°F | Showers And Thunderstorms | 5 to 10 mph S | 76% |
| Tuesday Night | 81°F | Showers And Thunderstorms | 5 to 10 mph S | 76% |
| Wednesday | 87°F | Showers And Thunderstorms | 5 mph SE | 81% |
| Wednesday Night | 80°F | Showers And Thunderstorms | 5 mph SE | 81% |
| Thursday | 87°F | Showers And Thunderstorms | 5 mph SE | 77% |
| Thursday Night | 80°F | Showers And Thunderstorms | 5 mph SE | 77% |
| Friday | 87°F | Showers And Thunderstorms Likely | 5 mph NE | 68% |
Forecast source: National Weather Service (api.weather.gov) for Key Largo (25.123, -80.412). Updated through the day.
Growing snapshot for Key Largo
Growing season
365 days
Hardiness zone
11a
More local growing data for Key Largo: nearby ZIP 33037 weather · frost dates · planting calendar · Florida frost dates
Nearby towns & communities
Big Coppitt Key
Big Pine Key
Cudjoe Key
Duck Key
Islamorada, Village of Islands
Key Colony Beach
Key West
Layton
Marathon
North Key Largo
Stock Island
Tavernier
Climate data from the nearest NOAA station, John Pennekamp Sp, Fl (4.6 mi from Key Largo). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.