December weather forecast
Rio Vista Isles, FL

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Weather in December

The first month of the winter, December, is also a moderately hot month in Rio Vista Isles, Florida, with temperature in the range of an average high of 75.4°F (24.1°C) and an average low of 68.5°F (20.3°C).

Temperature

As Rio Vista Isles, Florida, transitions into December, the average high-temperature stands at a still warm 75.4°F (24.1°C), offering little variation from the preceding month. Nighttime readings in Rio Vista Isles during December register a minimal drop from daytime highs, averaging at a pleasant 68.5°F (20.3°C).

Humidity

With an average relative humidity of 75%, December is the most humid month in Rio Vista Isles.

Rainfall

In December, in Rio Vista Isles, the rain falls for 10.4 days. Throughout December, 0.67" (17mm) of precipitation is accumulated. Throughout the year, in Rio Vista Isles, there are 179 rainfall days, and 15.55" (395mm) of precipitation is accumulated.

Daylight

The month with the shortest days in Rio Vista Isles, Florida, is December, with an average of 10h and 30min of daylight.
On the first day of December, sunrise is at 6:51 am and sunset at 5:28 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 5:39 pm EST.

Sunshine

January and December, with an average of 6.3h of sunshine, are months with the least sunshine in Rio Vista Isles.

UV index

January and December, with an average maximum UV index of 5, are months with the lowest UV index. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the average person.
Note: A maximum high UV index of 5 in December translates into the following recommendations:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
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Frequently asked questions

What are December temperatures in Rio Vista Isles?

The average high-temperature and low-temperature during December are 75.4°F (24.1°C) and 68.5°F (20.3°C) respectively. In October, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which factors the actual air temperature with the relative humidity, is evaluated at 87.8°F (31°C).

What is the most humid month in Rio Vista Isles?

December is the most humid month in Rio Vista Isles, Florida, with an average relative humidity of 75%.

What is the average humidity in December in Rio Vista Isles?

In December, the average relative humidity is 75%.

How much does it rain in Rio Vista Isles in December?

In December, in Rio Vista Isles, Florida, the rain falls for 10.4 days. Throughout December, 0.67" (17mm) of precipitation is accumulated.

What is the month with the shortest days in Rio Vista Isles?

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

What is the average length of the day in December in Rio Vista Isles?

The average day length in December in Rio Vista Isles is 10h and 32min.

What time are sunrise and sunset in December in Rio Vista Isles?

In December, on the first day of the month, sunrise is at 6:51 am and sunset at 5:28 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 5:39 pm EST.

What are the months with the least sunshine in Rio Vista Isles?

January and December, with an average of 6.3h of sunshine, are months with the least sunshine in Rio Vista Isles.

How many hours of sunshine does Rio Vista Isles have in December?

In December, the average sunshine duration in Rio Vista Isles, Florida, is 6.3h.

When is the lowest UV index in Rio Vista Isles?

The months with the lowest UV index are January and December, with an average maximum UV index of 5.

What is the UV index intensity in December in Rio Vista Isles?

In December, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate health threat from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Rio Vista Isles, FL

Average temperature in December - Rio Vista Isles, FL
  • Average high temperature in December: 75.4°F

The warmest month (with the highest average high temperature) is August (87.4°F).
The month with the lowest average high temperature is January (73°F).

  • Average low temperature in December: 68.5°F

The month with the highest average low temperature is August (82°F).
The coldest month (with the lowest average low temperature) is January (64.2°F).

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Average pressure in December
Rio Vista Isles, FL

Average pressure in December - Rio Vista Isles, FL
  • Average pressure in December: 30.08"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are September and October (29.95"Hg).

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Average wind speed in December
Rio Vista Isles, FL

Average wind speed in December - Rio Vista Isles, FL
  • Average wind speed in December: 10.7mph

The windiest month (with the highest average wind speed) is March (11.3mph).
The calmest month (with the lowest average wind speed) is July (7.8mph).

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Average humidity in December
Rio Vista Isles, FL

Average humidity in December - Rio Vista Isles, FL
  • Average humidity in December: 75%

The month with the highest relative humidity is December (75%).
The month with the lowest relative humidity is March (69%).

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Average rainfall in December
Rio Vista Isles, FL

Average rainfall in December - Rio Vista Isles, FL
  • Average rainfall in December: 0.67"

The wettest month (with the highest rainfall) is August (2.68").
The driest month (with the least rainfall) is January (0.39").

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Average rainfall days in December
Rio Vista Isles, FL

Average rainfall days in December - Rio Vista Isles, FL
  • Average rainfall days in December: 10.4 days

The month with the highest number of rainy days is September (23.6 days).
The month with the least rainy days is February (8.3 days).

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Average daylight in December /
Average sunshine in December
Rio Vista Isles, FL

Average daylight in December / Average sunshine in December - Rio Vista Isles, FL
  • Average daylight in December: 10h and 3min

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 30min).

  • Average sunshine in December: 6h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 54min).
The months with the least sunshine are January and December (Average sunshine: 6h and 18min).

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Average sunshine days in December
Rio Vista Isles, FL

Average sunshine days in December - Rio Vista Isles, FL
  • Average sunshine days in December: 15.1 days

The month with the most sunshine days is January (17.4 days).
The month with the least sunshine days is September (3.9 days).

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Average UV index in December
Rio Vista Isles, FL

Average UV index in December - Rio Vista Isles, FL
  • Average UV index in December: 5

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 December (UV index 5).

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Average cloud cover in December
Rio Vista Isles, FL

Average cloud cover in December - Rio Vista Isles, FL
  • Average cloud cover in December: 33

The month with the most cloud cover is October (Cloud cover 35).
The month with the least cloud cover is April (Cloud cover 27).

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Average visibility in December
Rio Vista Isles, FL

Average visibility in December - Rio Vista Isles, 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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Rio Vista Isles, Florida, USA

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