Climate and monthly weather forecastNorth Key Largo, FL
Climate and monthly weather forecast
Weather in January
January, like December, in North Key Largo, Florida, is another warm winter month, with an average temperature varying between 63.1°F (17.3°C) and 73.9°F (23.3°C). North Key Largo notes the coldest temperatures in January, with a high average of 73.9°F (23.3°C) and a low of 63.1°F (17.3°C). Weather in January »Weather in February
The last month of the winter, February, is another warm month in North Key Largo, Florida, with temperature in the range of an average low of 65.3°F (18.5°C) and an average high of 75.9°F (24.4°C). North Key Largo experiences a subtle adjustment in high-temperatures to a still warm 75.9°F (24.4°C) with the onset of February, maintaining near parity with January's 73.9°F (23.3°C). Weather in February »Weather in March
March, the first month of the spring in North Key Largo, is also a moderately hot month, with an average temperature fluctuating between 77.5°F (25.3°C) and 67.1°F (19.5°C). North Key Largo registers an average high-temperature of a still warm 77.5°F (25.3°C) with the arrival of March, showing minor deviation from the preceding month. Weather in March »Weather in April
April, the same as March, is a moderately hot spring month in North Key Largo, Florida, with temperature in the range of an average high of 82.2°F (27.9°C) and an average low of 73°F (22.8°C). North Key Largo in April witnesses an average high-temperature of a still warm 82.2°F (27.9°C), indicating a slight variation from March's 77.5°F (25.3°C). Weather in April »Weather in May
The last month of the spring, May, is also a moderately hot month in North Key Largo, Florida, with an average temperature fluctuating between 76.6°F (24.8°C) and 84.2°F (29°C). With the onset of May, the average high-temperature registers at a still warm 84.2°F (29°C), subtly different from April's 82.2°F (27.9°C). Weather in May »Weather in June
June, the first month of the summer in North Key Largo, is a tropical month, with temperature in the range of an average low of 79.5°F (26.4°C) and an average high of 86.7°F (30.4°C). June's climate shows a minor adjustment in average high-temperatures to a hot 86.7°F (30.4°C) from May's 84.2°F (29°C). Weather in June »Weather in July
July, the same as June, in North Key Largo, Florida, is another tropical summer month, with an average temperature fluctuating between 88.3°F (31.3°C) and 81.1°F (27.3°C). The arrival of July denotes a barely perceptible change in the average high-temperatures to a still hot 88.3°F (31.3°C) from June's 86.7°F (30.4°C). Weather in July »Weather in August
The last month of the summer, August, is another tropical month in North Key Largo, Florida, with an average temperature varying between 81.7°F (27.6°C) and 88.9°F (31.6°C). August, having an average high-temperature of 88.9°F (31.6°C) and an average low-temperature of 81.7°F (27.6°C), is the warmest month. August's mean heat index is evaluated at a scorching 104°F (40°C). Weather in August »Weather in September
September, the first month of the autumn in North Key Largo, is still a tropical month, with an average temperature varying between 80.4°F (26.9°C) and 87.3°F (30.7°C). The arrival of September is marked by an average high-temperature of a still hot 87.3°F (30.7°C), bearing a close resemblance to August. Weather in September »Weather in October
October, the same as September, is a moderately hot autumn month in North Key Largo, Florida, with temperature in the range of an average low of 76.3°F (24.6°C) and an average high of 84.2°F (29°C). The advent of October denotes an average high-temperature of a moderately hot 84.2°F (29°C), subtly different from September's 87.3°F (30.7°C). Weather in October »Weather in November
The last month of the autumn, November, is also a moderately hot month in North Key Largo, Florida, with an average temperature fluctuating between 79.7°F (26.5°C) and 70.7°F (21.5°C). With the start of November, North Key Largo measures an average high-temperature of a still warm 79.7°F (26.5°C), not significantly differing from October's 84.2°F (29°C). Weather in November »Weather in December
December, the first month of the winter in North Key Largo, is also a moderately hot month, with temperature in the range of an average low of 67.1°F (19.5°C) and an average high of 76.6°F (24.8°C). North Key Largo's average high-temperature in December is a still moderately hot 76.6°F (24.8°C), indicating a subtle variation from November. Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
North Key Largo, FL
The warmest month (with the highest average high temperature) is August (88.9°F).
The month with the lowest average high temperature is January (73.9°F).
The month with the highest average low temperature is August (81.7°F).
The coldest month (with the lowest average low temperature) is January (63.1°F).
Average pressure
North Key Largo, FL
- Average pressure in January:
30.1"Hg - Average pressure in February:
30.09"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
30.02"Hg - Average pressure in May:
30"Hg - Average pressure in June:
30"Hg
- Average pressure in July:
30.03"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
29.94"Hg - Average pressure in October:
29.94"Hg - Average pressure in November:
30.03"Hg - Average pressure in December:
30.08"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are September and October (29.94"Hg).
Average wind speed
North Key Largo, FL
- Average wind speed in January:
9.9mph - Average wind speed in February:
9.6mph - Average wind speed in March:
10.2mph - Average wind speed in April:
10.1mph - Average wind speed in May:
9.5mph - Average wind speed in June:
7.6mph
- Average wind speed in July:
7.1mph - Average wind speed in August:
7.5mph - Average wind speed in September:
7.5mph - Average wind speed in October:
9.7mph - Average wind speed in November:
9.8mph - Average wind speed in December:
9.5mph
The windiest month (with the highest average wind speed) is March (10.2mph).
The calmest month (with the lowest average wind speed) is July (7.1mph).
Average humidity
North Key Largo, FL
The month with the highest relative humidity is December (75%).
The month with the lowest relative humidity is March (68%).
Average rainfall
North Key Largo, FL
- Average rainfall in January:
1.26" - Average rainfall in February:
1.14" - Average rainfall in March:
1.26" - Average rainfall in April:
2.13" - Average rainfall in May:
4.61" - Average rainfall in June:
5.2"
The wettest month (with the highest rainfall) is August (6.77").
The driest month (with the least rainfall) is February (1.14").
Average rainfall days
North Key Largo, FL
- Average rainfall days in January:
12.5 days - Average rainfall days in February:
12.5 days - Average rainfall days in March:
12.9 days - Average rainfall days in April:
14.4 days - Average rainfall days in May:
19.7 days - Average rainfall days in June:
24.4 days
- Average rainfall days in July:
26 days - Average rainfall days in August:
26.8 days - Average rainfall days in September:
26.5 days - Average rainfall days in October:
21.2 days - Average rainfall days in November:
14.8 days - Average rainfall days in December:
14.2 days
The month with the highest number of rainy days is August (26.8 days).
The months with the least rainy days are January and February (12.5 days).
Average sea temperature
North Key Largo, FL
The best month for swimming (with the highest average sea temperature) is August (86.5°F).
The coldest month (with the lowest average sea temperature) is February (74°F).
Average daylight / Average sunshine
North Key Largo, FL
- Average daylight in January:
10h and 48min - Average daylight in February:
11h and 18min - Average daylight in March:
12h and 0min - Average daylight in April:
12h and 48min - Average daylight in May:
13h and 24min - Average daylight in June:
13h and 42min
- Average daylight in July:
13h and 30min - Average daylight in August:
13h and 0min - Average daylight in September:
12h and 18min - Average daylight in October:
11h and 36min - Average daylight in November:
10h and 54min - Average daylight in December:
10h and 36min
The month with the longest days is June (Average daylight: 13h and 42min).
The month with the shortest days is December (Average daylight: 10h and 36min).
- Average sunshine in January:
6h and 36min - Average sunshine in February:
8h and 30min - Average sunshine in March:
8h and 36min - Average sunshine in April:
9h and 42min - Average sunshine in May:
10h and 30min - Average sunshine in June:
10h and 24min
- Average sunshine in July:
11h and 0min - Average sunshine in August:
10h and 24min - Average sunshine in September:
8h and 54min - Average sunshine in October:
6h and 42min - Average sunshine in November:
6h and 30min - Average sunshine in December:
6h and 18min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 18min).
Average sunshine days
North Key Largo, FL
- Average sunshine days in January:
13.4 days - Average sunshine days in February:
11.8 days - Average sunshine days in March:
14.3 days - Average sunshine days in April:
11.7 days - Average sunshine days in May:
8.6 days - Average sunshine days in June:
3.8 days
- Average sunshine days in July:
3.6 days - Average sunshine days in August:
2.1 days - Average sunshine days in September:
2.5 days - Average sunshine days in October:
6.4 days - Average sunshine days in November:
10.2 days - Average sunshine days in December:
12.3 days
The month with the most sunshine days is March (14.3 days).
The month with the least sunshine days is August (2.1 days).
Average UV index
North Key Largo, FL
The months with the highest UV index are April, May, June, July, August and September (UV index 7).
The month with the lowest UV index is January (UV index 5).
Average cloud cover
North Key Largo, FL
The month with the most cloud cover is October (Cloud cover 36).
The month with the least cloud cover is April (Cloud cover 26).
Average visibility
North Key Largo, FL
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).





