Key Largo Weather Forecast
Key Largo weather: 80°F, mainly clear. Hourly forecast, 14-day outlook, UV, air quality and the best time to visit.
14-day forecast for Key Largo
Daily highs and lows, precipitation and UV.
| Day | Conditions | High / Low | Precip | Wind | UV |
|---|---|---|---|---|---|
| Wed, Sep 16 | 🌦️ Light drizzle | 88° / 77° | 28% · 0,0 in | 16 mph | 8 |
| Thu, Sep 17 | 🌧️ Showers | 81° / 72° | 58% · 1,8 in | 20 mph | 8 |
| Fri, Sep 18 | ⛈️ Thunderstorm | 87° / 79° | 57% · 0,3 in | 14 mph | 6 |
| Sat, Sep 19 | 🌧️ Showers | 88° / 80° | 58% · 0,4 in | 10 mph | 8 |
| Sun, Sep 20 | ⛈️ Thunderstorm | 87° / 82° | 58% · 0,5 in | 9 mph | 8 |
| Mon, Sep 21 | ⛈️ Thunderstorm | 88° / 82° | 57% · 0,2 in | 8 mph | 7 |
| Tue, Sep 22 | 🌦️ Light drizzle | 89° / 82° | 47% · 0,0 in | 10 mph | 8 |
| Wed, Sep 23 | ⛈️ Thunderstorm | 87° / 81° | 51% · 0,3 in | 7 mph | 7 |
| Thu, Sep 24 | 🌦️ Light showers | 85° / 81° | 53% · 0,4 in | 6 mph | 5 |
| Fri, Sep 25 | 🌦️ Light showers | 83° / 78° | 51% · 0,3 in | 9 mph | 3 |
| Sat, Sep 26 | 🌦️ Light showers | 82° / 78° | 61% · 0,6 in | 15 mph | 2 |
| Sun, Sep 27 | ⛈️ Thunderstorm | 82° / 78° | 62% · 0,9 in | 33 mph | 2 |
| Mon, Sep 28 | ⛈️ Thunderstorm | 83° / 80° | 65% · 1,4 in | 32 mph | 1 |
| Tue, Sep 29 | ⛈️ Thunderstorm | 83° / 80° | 62% · 0,9 in | 24 mph | 1 |
The two-week trend
Cooling. The second half of the window averages 35°F cooler than the days immediately ahead.
The window averages 85°F against a September normal of 85°F - right on average.
The next 7 days carry about 2.3 times a normal week's rain for September (3,2 in against 1,4 in).
What this means for Key Largo
Today is about average for September. The forecast high of 88°F is in line with the 85°F typical for this month.
A 28% chance means most of the area stays dry; a passing shower is possible but short.
No weather-related travel disruption is expected today. Roads and airports should run normally.
Northern Hemisphere, so peak summer falls in June to August.
The gap between the warmest and coldest month averages 47°F.
What to pack, what to skip
- Lightweight, light-coloured clothing and a refillable water bottle
- Sunglasses, a brimmed hat and SPF 30+
- A packable rain shell - 6 of the next 7 days carry a real chance of rain
- If your dates are flexible, avoid June, September and October - historically the least comfortable months here.
See the Key Largo forecast by time range
Key Largo weather - more answers
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 80°F (27°C) with mainly clear. Humidity is 77% and wind is 11 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 10:20 PM.
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 16, 2026 at 10:20 PM local time. Live blocks refresh every 15 minutes; climate averages monthly.
