December weather forecast
Rocky Branch, LA

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Weather in December

The first month of the winter, December, is also a moderate month in Rocky Branch, Louisiana, with an average temperature ranging between max 55.6°F (13.1°C) and min 41.5°F (5.3°C).

Temperature

The transition into December involves a small decrease in the average high-temperature, dipping slightly from an enjoyable 63.7°F (17.6°C) in November to a mild 55.6°F (13.1°C). During December, Rocky Branch witnesses a consistent average low-temperature of 41.5°F (5.3°C).

Humidity

In Rocky Branch, the average relative humidity in December is 81%.

Rainfall

In Rocky Branch, during December, the rain falls for 12.4 days and regularly aggregates up to 3.35" (85mm) of precipitation. Throughout the year, there are 155.8 rainfall days, and 37.13" (943mm) of precipitation is accumulated.

Snowfall

January, February and December are months with snowfall. December is the first month it typically snows. Throughout December, in the average 0.3 snowfall days, it receives 0.04" (1mm) of snow. In Rocky Branch, during the entire year, snow falls for 1.6 days and aggregates up to 0.35" (9mm) of snow.

Daylight

The month with the shortest days is December, with an average of 10h and 0min of daylight.
On the first day of the month, sunrise is at 6:53 am and sunset at 5:02 pm. On the last day of December, sunrise is at 7:10 am and sunset at 5:13 pm CST.

Sunshine

The months with the least sunshine are February and December, with an average of 4.9h of sunshine.

UV index

January and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: A maximum UV index of 3 in December translates into the following recommendations:
Undertake precautions - Guarding against sun damage is counselled. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Opt for tightly woven and loose clothing to enhance protection from the Sun. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Updated: Aug 22, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average December temperature?

In December, in Rocky Branch, the average high-temperature is 55.6°F (13.1°C), and the average low-temperature is 41.5°F (5.3°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which factors the actual air temperature with the relative humidity, in September is calculated to be 100.4°F (38°C).

What is the average humidity in December?

In Rocky Branch, the average relative humidity in December is 81%.

How many days does it rain in December?

In Rocky Branch, during December, the rain falls for 12.4 days and regularly aggregates up to 3.35" (85mm) of precipitation.

When does it start snowing?

December is the first month it typically snows. Throughout December, in the average 0.3 snowfall days, it receives 0.04" (1mm) of snow.

What is the month with the shortest days?

With an average of 10h and 0min of daylight, December has the shortest days of the year.

How many hours of daylight does Rocky Branch have in December?

In Rocky Branch, Louisiana, the average day length in December is 10h and 2min.

When are sunrise and sunset in December in Rocky Branch?

On the first day of December in Rocky Branch, sunrise is at 6:53 am and sunset at 5:02 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 5:13 pm CST.

What is the month with the least sunshine?

February and December, with an average of 4.9h of sunshine, are months with the least sunshine.

How long on average sun shines in December?

In Rocky Branch, the average sunshine duration in December is 4.9h.

What are the months with the lowest UV index?

January and December, with an average maximum UV index of 3, are months with the lowest UV index.

What is the UV index reading in December?

In Rocky Branch, the average daily maximum UV index in December is 3. A UV Index estimate of 3 to 5 represents a medium hazard to health from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Rocky Branch, LA

Average temperature in December - Rocky Branch, LA
  • Average high temperature in December: 55.6°F

The warmest months (with the highest average high temperature) are July and August (93.7°F).
The month with the lowest average high temperature is January (53.2°F).

  • Average low temperature in December: 41.5°F

The month with the highest average low temperature is July (73°F).
The coldest month (with the lowest average low temperature) is January (37.9°F).

Average pressure in December
Rocky Branch, LA

Average pressure in December - Rocky Branch, LA
  • Average pressure in December: 30.13"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in December
Rocky Branch, LA

Average wind speed in December - Rocky Branch, LA
  • Average wind speed in December: 6mph

The windiest month (with the highest average wind speed) is April (6.9mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).

Average humidity in December
Rocky Branch, LA

Average humidity in December - Rocky Branch, LA
  • Average humidity in December: 81%

The month with the highest relative humidity is February (82%).
The months with the lowest relative humidity are July, August, September and October (71%).

Average rainfall in December
Rocky Branch, LA

Average rainfall in December - Rocky Branch, LA
  • Average rainfall in December: 3.35"

The wettest month (with the highest rainfall) is April (4.25").
The driest month (with the least rainfall) is September (1.77").

Average rainfall days in December
Rocky Branch, LA

Average rainfall days in December - Rocky Branch, LA
  • Average rainfall days in December: 12.4 days

The month with the highest number of rainy days is August (15.1 days).
The month with the least rainy days is November (9.1 days).

Average snowfall in December
Rocky Branch, LA

Average snowfall in December - Rocky Branch, LA
  • Average snowfall in December: 0.04"

The month with the highest snowfall is February (0.2").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").

Average snowfall days in December
Rocky Branch, LA

Average snowfall days in December - Rocky Branch, LA
  • Average snowfall days in December: 0.3 days

The month with the highest number of snowfall days is February (0.8 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight in December /
Average sunshine in December
Rocky Branch, LA

Average daylight in December / Average sunshine in December - Rocky Branch, LA
  • Average daylight in December: 10h and 0min

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in December: 4h and 5min

The months with the most sunshine are July and August (Average sunshine: 10h and 30min).
The months with the least sunshine are February and December (Average sunshine: 4h and 54min).

Average sunshine days in December
Rocky Branch, LA

Average sunshine days in December - Rocky Branch, LA
  • Average sunshine days in December: 16.2 days

The month with the most sunshine days is October (20.2 days).
The month with the least sunshine days is February (13 days).

Average UV index in December
Rocky Branch, LA

Average UV index in December - Rocky Branch, LA
  • Average UV index in December: 3

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 and December (UV index 3).

Average cloud cover in December
Rocky Branch, LA

Average cloud cover in December - Rocky Branch, LA
  • Average cloud cover in December: 48

The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 28).

Average visibility in December
Rocky Branch, LA

Average visibility in December - Rocky Branch, LA
  • Average visibility in December: 5mi

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

Rocky Branch, Louisiana, USA

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