December weather forecast and climate
Keystone Heights, FL

Weather in December

December, the first month of the winter, in Keystone Heights, is also an agreeable month, with average temperature varying between 68.4°F (20.2°C) and 51.4°F (10.8°C).

Temperature

In Keystone Heights, Florida, the average high-temperature in December is relatively the same as in November - a still pleasant 68.4°F (20.2°C). In December, the average low-temperature is 51.4°F (10.8°C).

Humidity

The average relative humidity in December is 77%.

Rainfall

In Keystone Heights, during December, the rain falls for 10.9 days and regularly aggregates up to 2.24" (57mm) of precipitation. In Keystone Heights, during the entire year, the rain falls for 188.6 days and collects up to 33.5" (851mm) of precipitation.

Snowfall

The only month with snowfall in Keystone Heights is December. The month with the most snowfall days is December when snow falls for 0.1 days.

Daylight

The month with the shortest days is December, with an average of 10.3h of daylight.

Sunshine

With an average of 5.9h of sunshine, December has the least sunshine of the year in Keystone Heights, Florida.

UV index

January and December, with an average maximum UV index of 4, are months with the lowest UV index. A UV Index of 3 to 5 symbolizes a moderate threat to health from the exposure to the Sun's UV radiation for the average person.
Note: The average daily UV index of 4 transform into the following instructions:
Take precautions - Protection against the skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in December in Keystone Heights?

In December, the average high-temperature is 68.4°F (20.2°C), and the average low-temperature is 51.4°F (10.8°C).

What is the average humidity in December in Keystone Heights?

In December, the average relative humidity in Keystone Heights is 77%.

How many days does it rain in December in Keystone Heights?

In Keystone Heights, in December, during 10.9 rainfall days, 2.24" (57mm) of precipitation is typically accumulated.

When does it start to snow in Keystone Heights?

December is the first month it typically snows in Keystone Heights, Florida. Throughout December, there are 0.1 snowfall days.

What is the snowiest month in Keystone Heights?

December has the most snowfall days of the year. Snow falls for 0.1 days.

What is the month with the shortest days in Keystone Heights?

December has the shortest days of the year, with an average of 10.3h of daylight.

What is the average length of the day in December in Keystone Heights?

The average length of the day in December is 10.3h.

What is the month with the least sunshine in Keystone Heights?

The month with the least sunshine is December, with an average of 5.9h of sunshine.

How long on average sun shines in December in Keystone Heights?

In Keystone Heights, Florida, the average sunshine in December is 5.9h.

When is the lowest UV index in Keystone Heights?

Months with the lowest UV index are January and December, with an average maximum UV index of 4.

How high is the UV index in December in Keystone Heights?

In Keystone Heights, Florida, the average daily maximum UV index in December is 4. A UV Index value of 3 to 5 symbolizes a medium health risk from unprotected exposure to the UV radiation.

Average temperature in December
Keystone Heights, FL

Average temperature in December - Keystone Heights, FL
  • Average high temperature in December: 68.4°F

The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is January (64.2°F).

  • Average low temperature in December: 51.4°F

The month with the highest average low temperature is August (74.8°F).
The coldest month (with the lowest average low temperature) is January (46.6°F).

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Average pressure in December
Keystone Heights, FL

Average pressure in December - Keystone Heights, FL
  • Average pressure in December: 30.12"

The month with the highest atmospheric pressure is January (30.14").
The month with the lowest atmospheric pressure is September (29.97").

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Average wind speed in December
Keystone Heights, FL

Average wind speed in December - Keystone Heights, FL
  • Average wind speed in December: 5.7mph

The windiest month (with the highest average wind speed) is April (6.3mph).
The calmest month (with the lowest average wind speed) is July (4.5mph).

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Average humidity in December
Keystone Heights, FL

Average humidity in December - Keystone Heights, FL
  • Average humidity in December: 77%

Months with the highest relative humidity are August and September (78%).
The month with the lowest relative humidity is March (71%).

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Average rainfall in December
Keystone Heights, FL

Average rainfall in December - Keystone Heights, FL
  • Average rainfall in December: 2.24"

The wettest month (with the highest rainfall) is July (5.31").
The driest months (with the least rainfall) are January and November (1.5").

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Average rainfall days in December
Keystone Heights, FL

Average rainfall days in December - Keystone Heights, FL
  • Average rainfall days in December: 10.9 days

The month with the highest number of rainy days is August (25.9 days).
The month with the least rainy days is November (9 days).

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Average snowfall days in December
Keystone Heights, FL

Average snowfall days in December - Keystone Heights, FL
  • Average snowfall days in December: 0.1 days

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

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Average daylight in December /
Average sunshine in December
Keystone Heights, FL

Average daylight in December / Average sunshine in December - Keystone Heights, FL
  • Average daylight in December: 10.3h

The month with the longest days is June (Average daylight: 14h).
The month with the shortest days is December (Average daylight: 10.3h).

  • Average sunshine in December: 5.9h

The month with the most sunshine is July (Average sunshine: 10.7h).
The month with the least sunshine is December (Average sunshine: 5.9h).

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Average sunshine days in December
Keystone Heights, FL

Average sunshine days in December - Keystone Heights, FL
  • Average sunshine days in December: 17.5 days

The month with the most sunshine days is January (19.9 days).
The month with the least sunshine days is July (3.6 days).

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Average UV index in December
Keystone Heights, FL

Average UV index in December - Keystone Heights, FL
  • Average UV index in December: 4

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

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Average cloud cover in December
Keystone Heights, FL

Average cloud cover in December - Keystone Heights, FL
  • Average cloud cover in December: 40

The month with the most cloud cover is December (Cloud cover 40).
Months with the least cloud cover are May and October (Cloud cover 31).

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Average visibility in December
Keystone Heights, FL

Average visibility in December - Keystone Heights, FL
  • Average visibility in December: 5mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is December (5mi).

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