December weather forecast
Jupiter Island, FL

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Weather in December

The first month of the winter, December, is also a moderately hot month in Jupiter Island, Florida, with an average temperature varying between 74.7°F (23.7°C) and 66.7°F (19.3°C).

Temperature

With the advent of December, Jupiter Island experiences an average high-temperature of a still warm 74.7°F (23.7°C), mirroring a close resemblance to the previous month. Jupiter Island experiences a steady nighttime temperature of 66.7°F (19.3°C) throughout the month of December.

Humidity

In Jupiter Island, Florida, the average relative humidity in December is 76%.

Rainfall

In Jupiter Island, in December, it is raining for 15.5 days, with typically 2.2" (56mm) of accumulated precipitation. In Jupiter Island, during the entire year, the rain falls for 227.4 days and collects up to 44.72" (1136mm) of precipitation.

Daylight

With an average of 10h and 30min of daylight, December has the shortest days of the year in Jupiter Island.
On the first day of the month, sunrise is at 6:52 am and sunset at 5:26 pm. On the last day of December, in Jupiter Island, Florida, sunrise is at 7:09 am and sunset at 5:37 pm EST.

Sunshine

The average sunshine in December in Jupiter Island is 6h.

UV index

In Jupiter Island, Florida, the average daily maximum UV index in December is 6. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: The maximum UV index of 6 during December leads to these instructions:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
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Frequently asked questions

What are December temperatures in Jupiter Island?

The average high-temperature and low-temperature in Jupiter Island, Florida, during December are 74.7°F (23.7°C) and 66.7°F (19.3°C) respectively. In October, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines relative humidity and air temperature, is calculated to be 86°F (30°C).

What is the average humidity in December in Jupiter Island?

The average relative humidity in December in Jupiter Island, Florida, is 76%.

How many days does it rain in December in Jupiter Island?

In Jupiter Island, during December, the rain falls for 15.5 days and regularly aggregates up to 2.2" (56mm) of precipitation.

What is the month with the shortest days in Jupiter Island?

The month with the shortest days in Jupiter Island is December, with an average of 10h and 30min of daylight.

What is the average length of the day in December in Jupiter Island?

In December, the average day length is 10h and 28min.

What time are sunrise and sunset in December in Jupiter Island?

On the first day of December in Jupiter Island, sunrise is at 6:52 am and sunset at 5:26 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 5:37 pm EST.

How long on average sun shines in December in Jupiter Island?

In December, the average sunshine duration in Jupiter Island, Florida, is 6h.

What is the UV index reading in December in Jupiter Island?

The average daily maximum UV index in December is 6. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Jupiter Island, FL

Average temperature in December - Jupiter Island, FL
  • Average high temperature in December: 74.7°F

The warmest month (with the highest average high temperature) is August (86.5°F).
The month with the lowest average high temperature is January (71.2°F).

  • Average low temperature in December: 66.7°F

The month with the highest average low temperature is August (81°F).
The coldest month (with the lowest average low temperature) is January (63.1°F).

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Average pressure in December
Jupiter Island, FL

Average pressure in December - Jupiter Island, FL
  • Average pressure in December: 30.09"Hg

The month with the highest atmospheric pressure is January (30.12"Hg).
The months with the lowest atmospheric pressure are September and October (29.96"Hg).

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Average wind speed in December
Jupiter Island, FL

Average wind speed in December - Jupiter Island, FL
  • Average wind speed in December: 10.9mph

The windiest month (with the highest average wind speed) is January (11.4mph).
The calmest month (with the lowest average wind speed) is July (7.8mph).

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Average humidity in December
Jupiter Island, FL

Average humidity in December - Jupiter Island, FL
  • Average humidity in December: 76%

The month with the highest relative humidity is June (78%).
The month with the lowest relative humidity is March (71%).

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Average rainfall in December
Jupiter Island, FL

Average rainfall in December - Jupiter Island, FL
  • Average rainfall in December: 2.2"

The wettest month (with the highest rainfall) is August (7.64").
The driest month (with the least rainfall) is January (1.34").

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Average rainfall days in December
Jupiter Island, FL

Average rainfall days in December - Jupiter Island, FL
  • Average rainfall days in December: 15.5 days

The month with the highest number of rainy days is August (26.7 days).
The month with the least rainy days is January (13 days).

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Average daylight in December /
Average sunshine in December
Jupiter Island, FL

Average daylight in December / Average sunshine in December - Jupiter Island, FL
  • Average daylight in December: 10h and 3min

The month with the longest days is June (Average daylight: 13h and 48min).
The month with the shortest days is December (Average daylight: 10h and 30min).

  • Average sunshine in December: 6h and 0min

The months with the most sunshine are July and August (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 5h and 54min).

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Average sunshine days in December
Jupiter Island, FL

Average sunshine days in December - Jupiter Island, FL
  • Average sunshine days in December: 10.7 days

The month with the most sunshine days is January (14.3 days).
The month with the least sunshine days is August (2.4 days).

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Average UV index in December
Jupiter Island, FL

Average UV index in December - Jupiter Island, FL
  • Average UV index in December: 6

The months with the highest UV index are May, June, July, August and September (UV index 7).
The months with the lowest UV index are January and February (UV index 5).

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Average cloud cover in December
Jupiter Island, FL

Average cloud cover in December - Jupiter Island, FL
  • Average cloud cover in December: 37

The months with the most cloud cover are November and December (Cloud cover 37).
The month with the least cloud cover is July (Cloud cover 28).

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Average visibility in December
Jupiter Island, FL

Average visibility in December - Jupiter Island, FL
  • Average visibility in December: 6mi

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).

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Jupiter Island, Florida, USA

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