Duck Key
Florida, USA
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Duck Key, FL

January, like December, is another pleasant winter month in Duck Key, Florida, with average temperature varying between 67.5°F (19.7°C) and 72.9°F (22.7°C). The coldest month is January, with an average high-temperature of 72.9°F (22.7°C) and an average low-temperature of 67.5°F (19.7°C). Weather in January »

February, the last month of the winter, in Duck Key, is a moderately hot month, with average temperature fluctuating between 70°F (21.1°C) and 73.4°F (23°C). In Duck Key, the average high-temperature in February is relatively the same as in January - a moderately hot 73.4°F (23°C). Weather in February »

March, the first month of the spring, in Duck Key, is still a warm month, with average temperature fluctuating between 70.5°F (21.4°C) and 74.3°F (23.5°C). In March, the average high-temperature is almost the same as in February - a still moderately hot 74.3°F (23.5°C). Weather in March »

April, the same as March, is another warm spring month in Duck Key, Florida, with average temperature varying between 77.4°F (25.2°C) and 75°F (23.9°C). In Duck Key, the average high-temperature is essentially the same as in March - a still moderately hot 77.4°F (25.2°C). Weather in April »

The last month of the spring, May, is also a moderately hot month in Duck Key, Florida, with average temperature fluctuating between 80.4°F (26.9°C) and 77.7°F (25.4°C). In Duck Key, the average high-temperature is practically the same as in April - a still moderately hot 80.4°F (26.9°C). Weather in May »

The first month of the summer, June, is still a warm month in Duck Key, Florida, with average temperature varying between 81.3°F (27.4°C) and 83.5°F (28.6°C). In June, the average high-temperature is relatively the same as in May - a still warm 83.5°F (28.6°C). Weather in June »

July, the same as June, is another warm summer month in Duck Key, Florida, with temperature in the range of an average low of 82.6°F (28.1°C) and an average high of 84.6°F (29.2°C). In Duck Key, the average high-temperature is essentially the same as in June - a still moderately hot 84.6°F (29.2°C). Weather in July »

The last month of the summer, August, is another warm month in Duck Key, Florida, with temperature in the range of an average high of 85.5°F (29.7°C) and an average low of 82.9°F (28.3°C). With an average high-temperature of 85.5°F (29.7°C) and an average low-temperature of 82.9°F (28.3°C), August is the warmest month. The average heat index is appraised at a very hot 95.4°F (35.2°C). Weather in August »

September, the first month of the autumn, in Duck Key, is also a moderately hot month, with average temperature ranging between min 82°F (27.8°C) and max 84.6°F (29.2°C). In Duck Key, the average high-temperature in September is practically the same as in August - a still moderately hot 84.6°F (29.2°C). Weather in September »

October, the same as September, is a moderately hot autumn month in Duck Key, Florida, with average temperature ranging between max 82.2°F (27.9°C) and min 79.3°F (26.3°C). In Duck Key, the average high-temperature in October is relatively the same as in September - a still moderately hot 82.2°F (27.9°C). Weather in October »

November, the last month of the autumn, in Duck Key, is another warm month, with average temperature varying between 74.1°F (23.4°C) and 77.9°F (25.5°C). In Duck Key, the average high-temperature is almost the same as in October - a still warm 77.9°F (25.5°C). Weather in November »

The first month of the winter, December, is still a warm month in Duck Key, Florida, with average temperature varying between 71.4°F (21.9°C) and 75.6°F (24.2°C). In Duck Key, the average high-temperature is almost the same as in November - a still warm 75.6°F (24.2°C). Weather in December »

What is the coldest month in Duck Key?

With an average high-temperature of 72.9°F (22.7°C) and an average low-temperature of 67.5°F (19.7°C), January is the coldest month in Duck Key, Florida.

How much does it rain in Duck Key?

Throughout the year, in Duck Key, there are 186.2 rainfall days, and 24.45" (621mm) of precipitation is accumulated.

When is the ocean coldest in Duck Key?

Months with the coldest seawater are January and February, with an average ocean temperature of 73.9°F (23.3°C).

When is the lowest UV index in Duck Key?

January is the month with the lowest UV index, with an average maximum UV index of 5.

What are the most humid months in Duck Key?

February and December, with an average relative humidity of 77%, are most humid months in Duck Key.

What is the least humid month in Duck Key?

March is the least humid month in Duck Key, with an average relative humidity of 73%.

What is the driest month in Duck Key?

March is the month with the least rainfall. Rain falls for 10.8 days and accumulates 0.43" (11mm) of precipitation.

What are the months with the highest UV index in Duck Key?

April through October, with an average maximum UV index of 7, are months with the highest UV index.

When are the longest days in Duck Key?

With an average of 13.7h of daylight, June has the longest days of the year in Duck Key.

What month has the most sunshine in Duck Key?

The month with the most sunshine is July, with an average of 11.1h of sunshine.

What is the warmest month in Duck Key?

The warmest month in Duck Key, Florida, is August, with an average high-temperature of 85.5°F (29.7°C) and an average low-temperature of 82.9°F (28.3°C).

When is the ocean warmest in Duck Key?

August is the month with the warmest seawater in Duck Key, Florida, with an average ocean temperature of 86.5°F (30.3°C).

What is the rainiest month in Duck Key?

The month with the most rainfall in Duck Key is September when the rain falls for 23 days and typically aggregates up to 4.21" (107mm) of precipitation.

What is the month with the shortest days in Duck Key?

December has the shortest days of the year, with an average of 10.6h of daylight.

What is the month with the least sunshine in Duck Key?

The month with the least sunshine in Duck Key is December, with an average of 6.6h of sunshine.
Average temperature - Duck Key, FL
Average humidity - Duck Key, FL
Average rainfall - Duck Key, FL

The wettest month (with the highest rainfall) is September (4.21").
The driest month (with the lowest rainfall) is March (0.43").

Average rainfall days - Duck Key, FL

The month with the highest number of rainy days is September (23 days).
The month with the lowest number of rainy days is February (10.3 days).

Average sea temperature - Duck Key, FL

The best month for swimming (with the highest average sea temperature) is August (86.6°F).
Coldest months (with the lowest average sea temperature) are January and February (73.9°F).

Average daylight / Average sunshine - Duck Key, FL

The month with the longest days is June (Average daylight: 13.7h).
The month with shortest days is December (Average daylight: 10.6h).

The month with most sunshine is July (Average sunshine: 11.1h).
The month with least sunshine is December (Average sunshine: 6.6h).

Average UV index - Duck Key, FL