Monroe County Climate and Average Weather
Climate of Monroe County: average temperatures, rainfall and seasons month by month.
Climate in Monroe County 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° | 67° | 1,3 in | ★★★★☆ |
| February | 72° | 68° | 1,2 in | ★★★★☆ |
| March | 76° | 72° | 2,4 in | ★★★★☆ |
| April | 78° | 74° | 0,9 in | ★★★★★ |
| May | 83° | 80° | 2,3 in | ★★★★☆ |
| June | 85° | 81° | 6,9 in | ★★★☆☆ |
| July | 86° | 82° | 3,1 in | ★★★★☆ |
| August | 87° | 82° | 4,6 in | ★★★☆☆ |
| September | 85° | 81° | 6,7 in | ★★★☆☆ |
| October | 82° | 78° | 5,5 in | ★★★☆☆ |
| November | 78° | 75° | 2,1 in | ★★★★☆ |
| December | 74° | 71° | 3,8 in | ★★★★☆ |
Climate type: Temperate. Source: Open-Meteo archive (ERA5).
Recent extremes in Monroe County
Highest and lowest readings observed in the last 3 years of reanalysis data - not all-time records.
How Monroe County compares with nearby places
Annual averages, and the difference against Monroe County.
| Place | Distance | Avg temp | vs here | Annual rain |
|---|---|---|---|---|
| Key West | 0 mi | 78°F | about the same | 41 in |
| Dry Tortugas National Park | 69 mi | 78°F | about the same | 37 in |
| Everglades (UNESCO World Heritage Site) | 75 mi | 76°F | 34°F cooler | 52 in |
| Everglades National Park | 75 mi | 76°F | 34°F cooler | 52 in |
| Key Largo | 91 mi | 78°F | about the same | 42 in |
Best time to visit Monroe County
Go in January, February, April and May. 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.
What this means for Monroe County
Today is about average for September. The forecast high of 85°F is in line with the 85°F typical for this month.
A 40% chance means rain is likely somewhere nearby at some point - carry a layer, but do not cancel.
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 - 7 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.
Summary
Monroe County is a county in Florida. Monroe County is a county in the United States. It has a population of about 82.000.
Right now it is 78°F (25°C) in Monroe County with overcast. It feels like 83°F. Today runs from 76°F to 85°F. Chance of precipitation is 40%. Sightseeing conditions score 8.4/10 - good conditions.
The best time to visit Monroe County is January, February, April and May. 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 67°F.
The closest major airport is Miami International Airport (MIA), about 127 mi away. Nearby highlights include Dry Tortugas National Park, Everglades (UNESCO World Heritage Site), Everglades National Park and Key Largo.
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 Monroe County 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.
Quick facts about Monroe County
| Type | County |
|---|---|
| State | Florida |
| Country | United States |
| Continent | North America |
| Coordinates | 24°33′18.4″N 81°46′48″W (24.5551, -81.78) |
| Population | 82.000 |
| Local time | 3:49 AM (UTC-04:00) |
| Best months | January, February, April and May |
| Climate | Temperate |
Weather map for Monroe County
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.
Explore Monroe County
Every topic we hold for this place, and the same topic for the places around it.
Climate for related places
Frequently asked questions
Where is Monroe County?
Monroe County is a county in Florida. Its coordinates are 24.5551, -81.78. It lies in North America.
What is the weather like in Monroe County right now?
It is currently 78°F (25°C) with overcast. Humidity is 86% and wind is 10 mph.
When is the best time to visit Monroe County?
January, February, April and May offer the most comfortable conditions in Monroe County, which has a temperate climate. June, September and October are usually the hardest months for outdoor plans.
What time zone is Monroe County in?
Monroe County observes America/New_York (UTC-04:00). The local time is 3:49 AM.
How many people live in Monroe County?
Monroe County has a population of approximately 82.000.
What is the nearest airport to Monroe County?
The closest airports are Miami International Airport (MIA), 127 mi away and Orlando International Airport (MCO), 269 mi away.
What are the top things to do in Monroe County?
Popular options include Dry Tortugas National Park, Everglades (UNESCO World Heritage Site), Everglades National Park, Key Largo, Biscayne National Park and South Beach.
Related articles
Data sources and methodology
| Place data | USPOTUS Atlas dataset (us-counties) - 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 3:49 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.
