Key Largo Weather Forecast
Key Largo weather: 82°F, overcast. Hourly forecast, 14-day outlook, UV, air quality and the best time to visit.
Summary
Key Largo is an island in Florida. Key Largo is an island known for diving on the Florida Reef.
Right now it is 82°F (28°C) in Key Largo with overcast. It feels like 90°F. Today runs from 72°F to 85°F. Chance of precipitation is 46%. Sightseeing conditions score 8.2/10 - good conditions.
The best time to visit Key Largo is January, February, April, May and November. The climate is temperate. June, September and October tend to be the least comfortable months. August is the warmest month with average highs near 87°F, while January is the coldest with lows near 66°F.
The closest major airport is Miami International Airport (MIA), about 50 mi away. Nearby highlights include Biscayne National Park, Everglades (UNESCO World Heritage Site), Everglades National Park and South Beach.
In plain terms. Today is about average for September. The forecast high of 85°F is in line with the 85°F typical for this month. The best window to be outside is roughly 7 AM to 10 AM, when temperature, rain chance and wind line up best. fishing is the strongest bet in Key Largo today at 9/10. No weather-related travel disruption is expected today. Roads and airports should run normally.
Compiled from this page's own data: atlas facts plus live Open-Meteo readings.
Active alerts for Key Largo
Derived from the forecast. No official alert feed is wired for this country yet.
Weather in Key Largo right now
Source: Open-Meteo. Updated 2:00 AM, Sep 21 local time.
See the Key Largo forecast by time range
Next 24 hours
Hour-by-hour temperature, precipitation chance and wind.
16-day forecast for Key Largo
Daily highs and lows, precipitation and UV.
| Day | Conditions | High / Low | Precip | Wind | UV |
|---|---|---|---|---|---|
| Sun, Sep 20 | ⛈️ Violent showers | 85° / 72° | 46% · 2,3 in | 15 mph | 8 |
| Mon, Sep 21 | ☁️ Overcast | 84° / 75° | 25% | 15 mph | 8 |
| Tue, Sep 22 | 🌧️ Heavy rain | 85° / 75° | 68% · 1,9 in | 14 mph | 5 |
| Wed, Sep 23 | 🌦️ Drizzle | 82° / 79° | 72% · 0,1 in | 12 mph | 3 |
| Thu, Sep 24 | ⛈️ Thunderstorm | 83° / 79° | 68% · 0,5 in | 8 mph | 5 |
| Fri, Sep 25 | 🌦️ Drizzle | 87° / 77° | 63% · 0,3 in | 8 mph | 7 |
| Sat, Sep 26 | ⛈️ Thunderstorm | 84° / 76° | 64% · 1,0 in | 9 mph | 8 |
| Sun, Sep 27 | 🌧️ Heavy drizzle | 82° / 78° | 64% · 0,2 in | 12 mph | 5 |
| Mon, Sep 28 | 🌦️ Light showers | 83° / 78° | 57% · 0,2 in | 11 mph | 5 |
| Tue, Sep 29 | 🌧️ Showers | 80° / 74° | 53% · 0,7 in | 15 mph | 7 |
| Wed, Sep 30 | ⛈️ Thunderstorm | 83° / 77° | 46% · 0,1 in | 9 mph | 7 |
| Thu, Oct 1 | ⛈️ Thunderstorm | 80° / 74° | 62% · 0,9 in | 10 mph | 2 |
| Fri, Oct 2 | 🌦️ Light showers | 81° / 76° | 67% · 0,4 in | 14 mph | 7 |
| Sat, Oct 3 | 🌦️ Drizzle | 85° / 78° | 55% · 0,1 in | 11 mph | 6 |
| Sun, Oct 4 | ⛈️ Thunderstorm | 83° / 76° | 46% · 0,4 in | 11 mph | 3 |
| Mon, Oct 5 | 🌧️ Showers | 83° / 75° | 42% · 0,9 in | 16 mph | 6 |
Climate in Key Largo month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| Month | Avg high | Avg low | Rainfall | Rating |
|---|---|---|---|---|
| January | 72° | 66° | 1,6 in | ★★★★☆ |
| February | 72° | 67° | 1,6 in | ★★★★☆ |
| March | 76° | 72° | 3,3 in | ★★★★☆ |
| April | 78° | 74° | 1,3 in | ★★★★★ |
| May | 83° | 79° | 2,7 in | ★★★★☆ |
| June | 85° | 81° | 6,5 in | ★★★☆☆ |
| July | 86° | 82° | 3,5 in | ★★★★☆ |
| August | 87° | 82° | 4,2 in | ★★★★☆ |
| September | 85° | 81° | 5,9 in | ★★★☆☆ |
| October | 82° | 78° | 5,5 in | ★★★☆☆ |
| November | 79° | 74° | 1,9 in | ★★★★☆ |
| December | 75° | 70° | 3,7 in | ★★★★☆ |
Climate type: Temperate. Source: Open-Meteo archive (ERA5).
Weather map for Key Largo
Animated model layers. Pick a layer to load it.
Animated layers by Windy. For pin-level detail and nearby places, see the interactive map below.
Air quality and pollen in Key Largo
Air quality: Open-Meteo (CAMS). US AQI scale.
Sun, twilight and moon
Golden and blue hour are the standard photographic approximation around sunrise and sunset.
Best time to visit Key Largo
Go in January, February, April, May and November. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: June, September and October - expect the least comfortable mix of heat, cold or rain.
Explore Key Largo
Every topic we hold for this place, and the same topic for the places around it.
Weather for related places
Frequently asked questions
Where is Key Largo?
Key Largo is an island in Florida. Its coordinates are 25.0865, -80.4473. It lies in North America.
What is the weather like in Key Largo right now?
It is currently 82°F (28°C) with overcast. Humidity is 79% and wind is 7 mph.
When is the best time to visit Key Largo?
January, February, April, May and November offer the most comfortable conditions in Key Largo, which has a temperate climate. June, September and October are usually the hardest months for outdoor plans.
What time zone is Key Largo in?
Key Largo observes America/New_York (UTC-04:00). The local time is 2:00 AM.
What is the nearest airport to Key Largo?
The closest airports are Miami International Airport (MIA), 50 mi away and Orlando International Airport (MCO), 237 mi away.
What are the top things to do in Key Largo?
Popular options include Biscayne National Park, Everglades (UNESCO World Heritage Site), Everglades National Park, South Beach, Dry Tortugas National Park and Myakka River State Park.
Related articles
Data sources and methodology
| Place data | USPOTUS Atlas dataset (islands) - coordinates, hierarchy and facts. |
|---|---|
| Forecast and observations | Open-Meteo (ECMWF and national models). |
| Air quality and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Climate averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Official alerts | US National Weather Service. |
| Method | Scores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing - the block is simply not shown. |
Last updated September 21, 2026 at 2:00 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.
