Baton Rouge
Louisiana, USA
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Baton Rouge, LA

Manicured lawns and beautiful trees approaching the State Capitol building in Baton Rouge, Louisiana
Manicured lawns and beautiful trees approaching the State Capitol building in Baton Rouge, Louisiana
December, the first month of the winter, in Baton Rouge, is still a comfortable month, with average temperature varying between 64°F (17.8°C) and 42.6°F (5.9°C).

Temperature

In December, the average high-temperature slightly decreases, from an agreeable 72°F (22.2°C) in November, to an enjoyable 64°F (17.8°C). The average low-temperature, in December, is 42.6°F (5.9°C).

Humidity

In Baton Rouge, the average relative humidity in December is 73.5%.

Rainfall

In Baton Rouge, Louisiana, during December, the rain falls for 9.1 days and regularly aggregates up to 5.6" (142.2mm) of precipitation. Throughout the year, in Baton Rouge, there are 112.8 rainfall days, and 60.6" (1540.4mm) of precipitation is accumulated.

Snowfall

January, March through December are months without snowfall in Baton Rouge.

Daylight

The month with the shortest days is December, with an average of 10.2h of daylight.

Sunshine

Months with the least sunshine in Baton Rouge are January and December, with an average of 5h of sunshine.

UV index

January and December, with an average maximum UV index of 4, are months with the lowest UV index. A UV Index estimate of 3 to 5 represents a medium health hazard from the exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily maximum UV index of 4 interpret into the following advice:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

What is the temperature in December in Baton Rouge?

In Baton Rouge, Louisiana, in December, the average high-temperature is 64°F (17.8°C), and the average low-temperature is 42.6°F (5.9°C).

What is the average humidity in December in Baton Rouge?

In December, the average relative humidity in Baton Rouge, Louisiana, is 73.5%.

How many days does it rain in December in Baton Rouge?

In Baton Rouge, in December, it is raining for 9.1 days, with typically 5.6" (142.2mm) of accumulated precipitation.

When it does not snow in Baton Rouge?

January, March through December are months without snowfall.

What is the month with the shortest days in Baton Rouge?

December has the shortest days of the year in Baton Rouge, with an average of 10.2h of daylight.

How many hours of daylight does Baton Rouge have in December?

In Baton Rouge, the average length of the day in December is 10.2h.

What is the month with the least sunshine in Baton Rouge?

January and December, with an average of 5h of sunshine, are months with the least sunshine.

How long on average sun shines in December in Baton Rouge?

The average sunshine in December is 5h.

What are the months with the lowest UV index in Baton Rouge?

January and December, with an average maximum UV index of 4, are months with the lowest UV index in Baton Rouge, Louisiana.

What is the UV index intensity in December in Baton Rouge?

In Baton Rouge, the average daily maximum UV index in December is 4. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from unsafe exposure to the Sun's UV rays.
Average temperature in December - Baton Rouge, LA
  • Average high temperature in December: 64.1°F

The warmest month (with the highest average high temperature) is August (92.5°F).
The month with the lowest average high temperature is January (62.3°F).

  • Average low temperature in December: 42.7°F

The month with the highest average low temperature is July (73.7°F).
The coldest month (with the lowest average low temperature) is January (41.2°F).

Average humidity in December - Baton Rouge, LA
  • Average humidity in December: 73.5%

The month with the highest relative humidity is August (78%).
The month with the lowest relative humidity is January (62%).

Average rainfall in December - Baton Rouge, LA
  • Average rainfall in December: 5.6"

The wettest month (with the highest rainfall) is June (6.4").
The driest month (with the lowest rainfall) is November (4.1").

Average rainfall days in December - Baton Rouge, LA
  • Average rainfall days in December: 9.1 days

The month with the highest number of rainy days is July (12.9 days).
Months with the lowest number of rainy days are April and October (7.5 days).

Average snowfall in December - Baton Rouge, LA
  • Average snowfall in December: 0"

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

Average daylight in December / Average sunshine in December - Baton Rouge, LA
  • Average daylight in December: 10.2h

The month with the longest days is June (Average daylight: 14.1h).
The month with shortest days is December (Average daylight: 10.2h).

  • Average sunshine in December: 5h

Months with most sunshine are May, June and July (Average sunshine: 9h).
Months with least sunshine are January and December (Average sunshine: 5).

Average UV index in December - Baton Rouge, LA
  • Average UV index in December: 4

Months with the highest UV index are June and July (UV index 11).
Months with the lowest UV index are January and December (UV index 4).