Weather in Key Largo

14-day forecast · updated today, Wednesday, October 28, at 5:56 pm (EDT)

Now · clear sky 80 °F

Feels like: 86 °F
Low / high: 75 / 82 °F
Rain: 27% · 0.62 in
Wind: 10 mph ENE

→ 29.89 inHg · steady UV 7 · high

Today in Key Largo: light drizzle, 75 °F to 82 °F, with a 27% chance of rain (0.62 in) and a gentle breeze from the east-northeast (10 mph). Tomorrow, heavy drizzle, 74 °F to 85 °F and a 9% chance of rain. The warmest day of the week is Thursday 29, at 85 °F. Next likely rain: Sunday 1 (47%).

Temperatures for the next 14 days

82° 75°
Today
85° 74°
Thu 29
85° 75°
Fri 30
85° 76°
Sat 31
84° 76°
Sun 1
83° 74°
Mon 2
83° 73°
Tue 3
84° 74°
Wed 4
83° 74°
Thu 5
83° 73°
Fri 6
82° 71°
Sat 7
82° 70°
Sun 8
79° 65°
Mon 9
79° 64°
Tue 10

Day by day

Day	Sky	Low / high	Rain	Max wind	Max wave	High tides	Model
Today · 28	Light drizzle	75 / 82 °F	27% · 0.62 in	14 mph NE	2.6 ft	11:18 am · 11:23 pm	HRRR
Thu 29	Heavy drizzle	74 / 85 °F	9% · 0.01 in	7 mph NE	2.0 ft	12:11 pm	HRRR + NBM
Fri 30	Light drizzle	75 / 85 °F	15%	9 mph NE	1.8 ft	12:17 am · 1:06 pm	NBM
Sat 31	Light drizzle	76 / 85 °F	32% · 0.01 in	11 mph ENE	2.0 ft	1:16 am · 2:05 pm	NBM
Sun 1	Showers	76 / 84 °F	47% · 0.17 in	11 mph E	2.8 ft	1:21 am · 2:08 pm	NBM
Mon 2	Showers	74 / 83 °F	36% · 0.10 in	11 mph E	3.1 ft	2:30 am · 3:11 pm	NBM
Tue 3	Light drizzle	73 / 83 °F	13%	9 mph N	2.8 ft	3:40 am · 4:12 pm	NBM
Wed 4	Light drizzle	74 / 84 °F	9%	7 mph NE	2.0 ft	4:45 am · 5:07 pm	NBM
Thu 5	Light drizzle	74 / 83 °F	12%	7 mph SSW	0.9 ft	5:44 am · 5:58 pm	NBM
Fri 6	Light showers	73 / 83 °F	14% · 0.04 in	7 mph W	2.3 ft	6:35 am · 6:44 pm	NBM
Sat 7	Light drizzle	71 / 82 °F	11% · 0.07 in	8 mph NNE	2.0 ft	7:21 am · 7:26 pm	NBM
Sun 8	Light drizzle	70 / 82 °F	29% · 0.03 in	9 mph NNE	1.6 ft	8:03 am · 8:06 pm	NBM + ECMWF
Mon 9	Mainly clear	65 / 79 °F	25%	9 mph NNW	1.5 ft	8:42 am · 8:44 pm	ECMWF
Tue 10	Overcast	64 / 79 °F	25%	8 mph NNW	1.1 ft	9:20 am · 9:21 pm	ECMWF

Each hour comes from the best model for this spot: HRRR until Thursday 29 12:00 pm; then NBM until Sunday 8 2:00 pm; then ECMWF until Thursday 12 10:00 am; then GFS.

Each day comes from the best model covering this spot: regional ones first (HRRR and NBM in the U.S., AROME, ICON-EU), then ECMWF; day 16, NOAA GFS. Waves: Météo-France up to day 10, then ECMWF WAM, coarser and further offshore. High tides: our own tide calculation.

Today, every 3 hours

Time	12:00 am	3:00 am	6:00 am	9:00 am	12:00 pm	3:00 pm	6:00 pm	9:00 pm
Sky	Clear	Mainly clear	Partly cloudy	Light drizzle	Light drizzle	Clear sky	Clear sky	Clear
Temperature	75°	76°	76°	78°	82°	82°	80°	76°
Chance of rain	20%	22%	10%	1%	2%	1%	1%	1%
Rain	0.00 in	0.00 in	0.00 in	0.00 in	0.00 in	0.00 in	0.00 in	0.00 in
Wind (mph)	12 N	9 ENE	12 ENE	8 N	13 NE	13 ENE	10 ENE	7 NE
Humidity	89%	91%	88%	91%	84%	86%	85%	90%
UV	0	0	0	1	7	5	0	0
Model	HRRR	HRRR	HRRR	HRRR	HRRR	HRRR	HRRR	HRRR

Do the models agree?

Low confidence

They don't agree on rain today: it may change, so check again closer to the day.

What 6 forecast models say for the next few days. The closer they are, the more reliable the forecast.

HighRainWind

Do the models agree? · High
High (°F)	Today	Thu 29	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3
ECMWF	84°	83°	83°	83°	81°	80°	83°
AIFS	83°	83°	82°	81°	79°	76°	78°
GFS	83°	83°	83°	83°	82°	82°	81°
ICON	84°	85°	83°	83°	81°	81°	81°
HRRR	82°	84°	—	—	—	—	—
NBM	85°	85°	85°	85°	84°	83°	83°
Confidence	high	high	high	high	high	high	high

Do the models agree? · Rain
Rain	Today	Thu 29	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3
ECMWF	0.04 in	0.17 in	0.02 in	0.06 in	0.59 in	0.89 in	0.02 in
AIFS	0.07 in	0.05 in	0.11 in	0.24 in	0.89 in	1.63 in	0.25 in
GFS	0.02 in	0	0	0.03 in	0.08 in	0.02 in	0
ICON	0.00 in	0.04 in	0.03 in	0.02 in	0.41 in	0.38 in	0.12 in
HRRR	0.62 in	0	—	—	—	—	—
NBM	0.09 in	0.01 in	0	0.01 in	0.17 in	0.10 in	0
Confidence	low	medium	high	low	medium	medium	low

Do the models agree? · Wind
Wind (mph)	Today	Thu 29	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3
ECMWF	1323	814	1018	1218	1321	1114	1123
AIFS	13	8	10	12	15	15	13
GFS	1322	1117	1115	1216	1016	1113	1211
ICON	919	614	817	919	716	921	720
HRRR	1430	911	—	—	—	—	—
NBM	1523	915	916	1117	1117	1115	913
Confidence	high	high	high	high	high	high	high

Chance of rain from the ensemble models

Model	Today	Thu 29	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3
ECMWF (51 scenarios)	57%	77%	73%	86%	82%	66%	38%
GFS (GEFS, 31 scenarios)	81%	14%	16%	48%	58%	28%	13%
NBM (NOAA)	27%	9%	15%	32%	47%	36%	13%
Thunderstorm (NBM)	2%	3%	19%	22%	30%	25%	12%

Each model's day runs midnight to midnight local time; models that reach fewer days are left blank. Rain: daily total. Wind: the day's highest average wind and, in small type, the strongest gust. Highlighted: values that stand out from the rest. The chance of rain comes from many runs of the same model with slightly different starting data.

Outlook

How the coming weeks and months compare with what is normal for the time of year. It is a trend, not a day-by-day forecast.

Next few weeks, compared with normal: normal temperatures, normal rain and a slightly warmer sea.

Next 6 weeks

When	TemperatureTemp.	Rain	Sea	Typical high / low
Nov 2 – Nov 8Nov 2–Nov 8	A bit above +2.0 °F	A bit below −33%	A bit above +1.3 °F	—
Nov 9 – Nov 15Nov 9–Nov 15	Normal −0.5 °F	A bit above +30%	A bit above +0.7 °F	78° / 73°
Nov 16 – Nov 22Nov 16–Nov 22	Normal +0.7 °F	A bit above +33%	Normal +0.4 °F	78° / 73°
Nov 23 – Nov 29Nov 23–Nov 29	Normal +0.7 °F	A bit above +31%	A bit above +0.5 °F	77° / 73°
Nov 30 – Dec 6Nov 30–Dec 6	Normal +0.4 °F	A bit above +48%	A bit above +0.5 °F	76° / 72°

Coming months

When	TemperatureTemp.	Rain	Sea
November	A bit above +1.8 °F	A bit above +37%	Above +1.8 °F
December	Normal +0.4 °F	Well above +108%	A bit above +1.4 °F
January	A bit below −0.9 °F	Well above +177%	A bit above +0.5 °F
February	Normal −0.7 °F	Well above +162%	Normal +0.4 °F
March	Normal −0.7 °F	Well above +147%	Normal +0.2 °F

Weeks: ECMWF 46-day (average of its scenarios), against the normal of the last 20 years for those dates. Months: ECMWF SEAS5. Rain: total against normal. The further ahead, the closer it gets to normal and the less detail it can give.

Key Largo climate by monthClimate by month

Normal weather for each month (1991–2020 averages)

The best time to visit Key Largo is from November to April: highs of 75 °F to 82 °F, about 6 rainy days a month and 8 hours of sunshine a day.

Hurricane season: from August to October, peaking in September. In the last 30 years (1996–2025), 13 tropical cyclones passed within 93 mi of Key Largo, about 4 every 10 years; 5 of them with hurricane-force winds (74 mph or more). The most recent: Eta, in November 2020.

75° 62°

JanJ
76° 63°

FebF
79° 66°

MarM
82° 69°

AprA
85° 73°

MayM
89° 76°

JunJ
90° 78°

JulJ
90° 78°

AugA
89° 77°

SepS
86° 74°

OctO
80° 69°

NovN
77° 65°

DecD

Highs and lows
Monthly rainfall
Best time

Month	High	Low	Rain	Rainy daysDays	Sun (h/day)	Water	Waves	Cyclones
JanuaryJan	75°	62°	1.64 in	5	6.6	75°	2.4 ft	–
FebruaryFeb	76°	63°	1.37 in	5	7.5	75°	2.2 ft	–
MarchMar	79°	66°	1.41 in	6	8.4	76°	2.3 ft	–
AprilApr	82°	69°	2.26 in	7	8.8	78°	2.0 ft	–
MayMay	85°	73°	5.87 in	13	8.9	81°	1.9 ft	–
JuneJun	89°	76°	7.90 in	22	7.2	83°	1.6 ft	–
JulyJul	90°	78°	4.20 in	23	8.3	85°	1.5 ft	1
AugustAug	90°	78°	5.76 in	24	7.5	86°	1.6 ft	4
SeptemberSep	89°	77°	6.83 in	23	6.6	85°	1.6 ft	5
OctoberOct	86°	74°	6.00 in	13	6.4	83°	2.2 ft	2
NovemberNov	80°	69°	2.10 in	6	6.7	79°	2.4 ft	1
DecemberDec	77°	65°	1.28 in	5	6.4	77°	2.3 ft	–

Month	Water	Waves	Cyclones
Jan	75°	2.4 ft	–
Feb	75°	2.2 ft	–
Mar	76°	2.3 ft	–
Apr	78°	2.0 ft	–
May	81°	1.9 ft	–
Jun	83°	1.6 ft	–
Jul	85°	1.5 ft	1
Aug	86°	1.6 ft	4
Sep	85°	1.6 ft	5
Oct	83°	2.2 ft	2
Nov	79°	2.4 ft	1
Dec	77°	2.3 ft	–

Days: rainy days in the month. Sun: hours a day.

A normal year brings 46.62 in of rain on about 152 days and about 2,700 hours of sunshine.

Cyclones: how many tropical cyclones (tropical storms, hurricanes and typhoons) passed within 93 mi in each month from 1996 to 2025, according to IBTrACS (NOAA).

1991–2020 averages. Highs, lows and rainfall: TerraClimate; rainy days (0.04 in or more): NASA POWER (MERRA-2); sunshine hours: estimated from solar radiation; water: NOAA OISST; waves (average height): ERA5, 2011–2020. Normals are not a forecast: any given year can turn out very different. Sources and licenses

Temperature

Now80 °Ffeels like 86 °F

Tomorrow74 / 85 °F

It's 80 °F now (feels like 86 °F). Today, 75 °F to 82 °F; tomorrow, 74 °F to 85 °F.

Chance of rain

Today 27% 0.62 in
Thu 29 9% 0.01 in
Fri 30 15%
Sat 31 32% 0.01 in
Sun 1 47% 0.17 in
Mon 2 36% 0.10 in
Tue 3 13%

Today the chance of rain reaches 27%, with 0.62 in in total. The next day with likely rain is Sunday 1: 47% and 0.17 in.

Recent rain: last 24 hours, 0.67 in; last 3 days, 1.02 in; last 7 days, 1.48 in.

Humidity and dew point

Humidity85%

Dew point75 °F

Humidity is 85% now and the dew point is 75 °F. With a dew point this high, it feels muggy.

The dew point is the temperature at which the air becomes saturated: the higher it is, the heavier the air feels.

Visibility and fog

Now10.0 migood

Clouds10%

Visibility is good now (10.0 mi). No fog expected today.

UV index

Now0

Today's peak7high

Thu 29: 7 · Fri 30: 6 · Sat 31: 6

Index	Level	What to do
0–2	low	No special protection needed.
3–5	moderate	Hat, sunglasses and sunscreen around midday.
6–7	high	Sunscreen, hat and shade between 12 and 4 pm.
8–10	very high	Avoid the midday sun; reflection off the water adds to it.
11+	extreme	Avoid the sun between 11 am and 5 pm; protect yourself even if it is cloudy.

Reflection off water and sand adds radiation: protect yourself more on a boat or at the beach.

Barometric pressure

↗ Rising Anglers say fish bite less for a while
→ Steady · now Anglers expect normal activity
↘ Falling Anglers say fish feed more before the change

29.8029.9030.00 30.00

Steady now (+0.02 inHg in 3 hours). Over the next 48 hours: +0.04 inHg. Steady pressure: anglers expect normal activity. Fast changes, either way, tend to affect fishing.

Air and pollen

Air qualityGood · 34

Saharan dustNo

Previous days

The weather over the last 30 days, as the models analyzed it. Tap a day to see it hour by hour.

Day	Sky	Low / high	Rain	Max wind
Tue 27	Light drizzle	73 / 83 °F	0.07 in	18 mph NNE
Mon 26	Drizzle	72 / 83 °F	0.19 in	24 mph NNE
Sun 25	Drizzle	70 / 84 °F	0.32 in	17 mph N
Sat 24	Light drizzle	71 / 83 °F	0.04 in	14 mph N
Fri 23	Light drizzle	70 / 83 °F	0.13 in	12 mph NNE
Thu 22	Light drizzle	70 / 81 °F	0.11 in	13 mph N
Wed 21	Overcast	68 / 84 °F	0	11 mph N

Show all 30 days

Day	Sky	Low / high	Rain	Max wind
Tue 20	Light drizzle	73 / 83 °F	0.02 in	16 mph NNE
Mon 19	Overcast	79 / 85 °F	0	18 mph NE
Sun 18	Heavy drizzle	74 / 83 °F	0.30 in	19 mph NNE
Sat 17	Heavy drizzle	76 / 86 °F	0.30 in	11 mph NNE
Fri 16	Drizzle	76 / 88 °F	0.24 in	10 mph ESE
Thu 15	Light drizzle	82 / 88 °F	0.06 in	11 mph E
Wed 14	Light drizzle	78 / 84 °F	0.11 in	12 mph ENE
Tue 13	Light drizzle	78 / 88 °F	0.05 in	11 mph NE
Mon 12	Light drizzle	79 / 89 °F	0.07 in	9 mph NE
Sun 11	Light drizzle	80 / 88 °F	0.08 in	11 mph SE
Sat 10	Light drizzle	83 / 87 °F	0.05 in	13 mph SSE
Fri 9	Light drizzle	83 / 88 °F	0.13 in	13 mph SSE
Thu 8	Light drizzle	77 / 87 °F	0.09 in	12 mph S
Wed 7	Light drizzle	78 / 86 °F	0.11 in	11 mph SSW
Tue 6	Overcast	81 / 87 °F	0	9 mph SSE
Mon 5	Light drizzle	81 / 87 °F	0.02 in	9 mph SE
Sun 4	Light drizzle	83 / 86 °F	0.04 in	12 mph ESE
Sat 3	Light drizzle	83 / 87 °F	0.01 in	14 mph ESE
Fri 2	Light drizzle	83 / 88 °F	0.06 in	14 mph ESE
Thu 1	Thunderstorm	78 / 83 °F	1.44 in	13 mph E
Wed 30	Thunderstorm	76 / 82 °F	0.77 in	13 mph ENE
Tue 29	Light showers	74 / 80 °F	0.71 in	9 mph SE
Mon 28	Light drizzle	73 / 85 °F	0.01 in	11 mph WSW

These are the models at the start of each day (ECMWF and GFS; waves from Météo-France), not readings from a weather station: there can be differences at specific spots.

Questions about the weather in Key LargoQuestions

What's the weather like today in Key Largo?

Light drizzle, from 75 °F to 82 °F, with a gentle breeze from the east-northeast (10 mph) and a 27% chance of rain.

Will it rain tomorrow in Key Largo?

On Thursday 29 the chance of rain is 9% (0.01 in): heavy drizzle.

How warm will it be this week?

Between a low of 73 °F and a high of 85 °F; the warmest day, Thursday 29.

What's the UV index today?

It reaches 7 (high). Sunscreen, hat and shade between 12 and 4 pm.

Is the pressure rising or falling?

It's 29.89 inHg and steady: +0.04 inHg over the last 24 hours.

When is the best time to visit Key Largo?

The best time to visit Key Largo is from November to April: highs of 75 °F to 82 °F, about 6 rainy days a month and 8 hours of sunshine a day.

What is the weather like in Key Largo in October?

In October, Key Largo normally sees highs of 86 °F and lows of 74 °F, with about 13 rainy days (6.00 in for the month) and 6 hours of sunshine a day. The sea is around 83 °F. These are 1991–2020 averages.

What are the warmest and wettest months in Key Largo?

The warmest is August, with average highs of 90 °F, and the coldest January, with lows of 62 °F. The wettest is June (7.90 in) and the driest, December.

When is hurricane season in Key Largo?

Hurricane season: from August to October, peaking in September. In the last 30 years (1996–2025), 13 tropical cyclones passed within 93 mi of Key Largo, about 4 every 10 years; 5 of them with hurricane-force winds (74 mph or more). The most recent: Eta, in November 2020.

More about Key Largo today

Weather near Key Largo

Only places with a different forecast: spots a few miles apart share the same model cell and wouldn't add anything.

Learn more

Weather: Open-Meteo, CC BY 4.0, with the best model for each spot and lead time (NOAA HRRR and NBM in the U.S., Météo-France AROME, DWD ICON-EU, ECMWF IFS and NOAA GFS); ECMWF grid point 12 mi away. The comparison also uses ICON (DWD), AIFS (ECMWF) and ARPEGE (Météo-France). Outlook: ECMWF 46-day and SEAS5. Chance of rain from ensemble models (ECMWF, GEFS and NBM). UV, air quality and pollen: CAMS (Copernicus).

Forecast from Open-Meteo (CC BY 4.0) with models from ECMWF, NOAA, Météo-France, DWD, Copernicus Marine and CAMS. Updated at 5:56 pm (local time).

Spotted a mistake? Tell us · Where the weather and sea data come from