December weather forecast
Upper Grand Lagoon, FL

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Weather in December

December, the first month of the winter in Upper Grand Lagoon, is still a comfortable month, with an average temperature fluctuating between 63.5°F (17.5°C) and 51.8°F (11°C).

Temperature

Upper Grand Lagoon experiences a moderate temperature shift at the start of December, with average high-temperatures adjusting a bit from a pleasant 68.9°F (20.5°C) in November to a comfortable 63.5°F (17.5°C). December nights in Upper Grand Lagoon observe an average temperature dip to a fresh 51.8°F (11°C).

Humidity

The most humid month in Upper Grand Lagoon is December, with an average relative humidity of 77%.

Rainfall

In Upper Grand Lagoon, Florida, during December, the rain falls for 12.4 days and regularly aggregates up to 3.78" (96mm) of precipitation. Throughout the year, there are 166.1 rainfall days, and 35.83" (910mm) of precipitation is accumulated.

Snowfall

In Upper Grand Lagoon, snow does not fall in February, April through December.

Ocean temperature

In Upper Grand Lagoon, the average seawater temperature in December is 66.9°F (19.4°C).
Note: Swimming is not a pleasant activity for most individuals in 66.9°F (19.4°C). Breathing becomes increasingly challenging to control as the water temperature dips from 69.8°F (21°C) to 59°F (15°C).

Daylight

The month with the shortest days in Upper Grand Lagoon is December, with an average of 10h and 12min of daylight.
On the first day of December in Upper Grand Lagoon, Florida, sunrise is at 6:22 am and sunset at 4:42 pm. On the last day of the month, sunrise is at 6:39 am and sunset at 4:53 pm CST.

Sunshine

In Upper Grand Lagoon, Florida, the average sunshine in December is 5.8h.

UV index

The months with the lowest UV index are January, February and December, with an average maximum UV index of 4. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the average person.
Note: A maximum high UV index of 4 in December translates into the following recommendations:
Undertake precautions - Guarding against sun damage is counselled. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
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Frequently asked questions

What is the temperature in December in Upper Grand Lagoon?

The high-temperature, in December, in Upper Grand Lagoon, records 63.5°F (17.5°C), while the low-temperature is 51.8°F (11°C). The average heat index (a.k.a. 'real feel', 'feels like'), which represents the influence of relative humidity on air temperature, in September is computed to be 95°F (35°C).

What is the most humid month in Upper Grand Lagoon?

With an average relative humidity of 77%, December is the most humid month in Upper Grand Lagoon, Florida.

What is the average humidity in December in Upper Grand Lagoon?

The average relative humidity in December is 77%.

How much does it rain in Upper Grand Lagoon in December?

In December, the rain falls for 12.4 days. Throughout December, 3.78" (96mm) of precipitation is accumulated.

When it does not snow in Upper Grand Lagoon?

February, April through December are months without snowfall in Upper Grand Lagoon.

Does it snow in Upper Grand Lagoon in December?

In Upper Grand Lagoon, Florida, in December, it doesn't snow. In January, it regularly snows.

How cold is the water in December in Upper Grand Lagoon?

In Upper Grand Lagoon, in December, the average water temperature is 66.9°F (19.4°C). Swimming in 66.9°F (19.4°C) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 69.8°F (21°C).

What is the month with the shortest days in Upper Grand Lagoon?

With an average of 10h and 12min of daylight, December has the shortest days of the year.

How many hours of daylight does Upper Grand Lagoon have in December?

In December, the average day length is 10h and 14min.

When is the sunrise / sunset in December in Upper Grand Lagoon?

On the first day of December in Upper Grand Lagoon, sunrise is at 6:22 am and sunset at 4:42 pm. On the last day of the month, sunrise is at 6:39 am and sunset at 4:53 pm CST.

How long on average sun shines in December in Upper Grand Lagoon?

In Upper Grand Lagoon, Florida, the average sunshine duration in December is 5.8h.

When is the lowest UV index in Upper Grand Lagoon?

The months with the lowest UV index in Upper Grand Lagoon are January, February and December, with an average maximum UV index of 4.

What is the UV index reading in December in Upper Grand Lagoon?

In December, the average daily maximum UV index in Upper Grand Lagoon is 4. A UV Index of 3 to 5 symbolizes a medium health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Upper Grand Lagoon, FL

Average temperature in December - Upper Grand Lagoon, FL
  • Average high temperature in December: 63.5°F

The warmest month (with the highest average high temperature) is August (88.3°F).
The month with the lowest average high temperature is January (60.1°F).

  • Average low temperature in December: 51.8°F

The month with the highest average low temperature is July (78.6°F).
The coldest month (with the lowest average low temperature) is January (47.7°F).

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Average pressure in December
Upper Grand Lagoon, FL

Average pressure in December - Upper Grand Lagoon, FL
  • Average pressure in December: 30.13"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.98"Hg).

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Average wind speed in December
Upper Grand Lagoon, FL

Average wind speed in December - Upper Grand Lagoon, FL
  • Average wind speed in December: 8.7mph

The windiest month (with the highest average wind speed) is January (9.2mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).

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Average humidity in December
Upper Grand Lagoon, FL

Average humidity in December - Upper Grand Lagoon, FL
  • Average humidity in December: 77%

The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in December
Upper Grand Lagoon, FL

Average rainfall in December - Upper Grand Lagoon, FL
  • Average rainfall in December: 3.78"

The wettest month (with the highest rainfall) is August (5.04").
The driest month (with the least rainfall) is November (1.69").

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Average rainfall days in December
Upper Grand Lagoon, FL

Average rainfall days in December - Upper Grand Lagoon, FL
  • Average rainfall days in December: 12.4 days

The month with the highest number of rainy days is August (23.8 days).
The month with the least rainy days is November (7.9 days).

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Average snowfall days in December
Upper Grand Lagoon, FL

Average snowfall days in December - Upper Grand Lagoon, FL
  • Average snowfall days in December: 0 days

The months with the highest number of snowfall days are January and March (0.1 days).
The months with the least snowfall days are February, April, May, June, July, August, September, October, November and December (0 days).

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Average sea temperature in December
Upper Grand Lagoon, FL

Average sea temperature in December - Upper Grand Lagoon, FL
  • Average sea temperature in December: 66.9°F

The best month for swimming (with the highest average sea temperature) is August (86°F).
The coldest month (with the lowest average sea temperature) is February (62.9°F).

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Average daylight in December /
Average sunshine in December
Upper Grand Lagoon, FL

Average daylight in December / Average sunshine in December - Upper Grand Lagoon, FL
  • Average daylight in December: 10h and 1min

The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).

  • Average sunshine in December: 5h and 5min

The months with the most sunshine are May and June (Average sunshine: 11h and 6min).
The month with the least sunshine is February (Average sunshine: 5h and 42min).

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Average sunshine days in December
Upper Grand Lagoon, FL

Average sunshine days in December - Upper Grand Lagoon, FL
  • Average sunshine days in December: 17.1 days

The month with the most sunshine days is November (21 days).
The month with the least sunshine days is August (5.7 days).

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Average UV index in December
Upper Grand Lagoon, FL

Average UV index in December - Upper Grand Lagoon, FL
  • Average UV index in December: 4

The months with the highest UV index are May, June, July and August (UV index 7).
The months with the lowest UV index are January, February and December (UV index 4).

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Average cloud cover in December
Upper Grand Lagoon, FL

Average cloud cover in December - Upper Grand Lagoon, FL
  • Average cloud cover in December: 38

The month with the most cloud cover is December (Cloud cover 38).
The months with the least cloud cover are May and October (Cloud cover 22).

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Average visibility in December
Upper Grand Lagoon, FL

Average visibility in December - Upper Grand Lagoon, 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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Upper Grand Lagoon, Florida, USA

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