Key Largo, FL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Key Largo, a community in Monroe County, Florida.
This Afternoon
85°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Partly sunny, with a high near 85. East wind around 10 mph. Chance of precipitation is 30%.
7-day forecast for Key Largo
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 85°F | Chance Showers And Thunderstorms | 10 mph E | 33% |
| Tonight | 75°F | Chance Showers And Thunderstorms | 5 to 10 mph E | 38% |
| Wednesday | 85°F | Chance Showers And Thunderstorms | 5 to 10 mph E | 38% |
| Wednesday Night | 74°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 5 to 10 mph NE | 36% |
| Thursday | 85°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph NE | 16% |
| Thursday Night | 73°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 5 to 10 mph NE | 12% |
| Friday | 85°F | Sunny | 5 mph NE | 7% |
| Friday Night | 74°F | Mostly Clear | 5 mph NE | 7% |
| Saturday | 83°F | Sunny | 5 mph NE | 1% |
| Saturday Night | 74°F | Mostly Clear | 5 mph NE | 5% |
| Sunday | 82°F | Sunny | 5 mph E | 9% |
| Sunday Night | 73°F | Slight Chance Rain Showers | 5 to 10 mph N | 15% |
| Monday | 81°F | Slight Chance Rain Showers | 10 to 15 mph N | 24% |
| Monday Night | 71°F | Slight Chance Rain Showers | 15 mph NE | 24% |
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 Nov 3, 2026.