December weather forecast
Sterlington, LA

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Weather in December

The first month of the winter, December, is also a moderate month in Sterlington, Louisiana, with an average temperature varying between 56.3°F (13.5°C) and 42.6°F (5.9°C).

Temperature

The transition into December involves a small decrease in the average high-temperature, dipping slightly from an enjoyable 64.6°F (18.1°C) in November to a mild 56.3°F (13.5°C). During December, the temperature in Sterlington is averaged to a low of 42.6°F (5.9°C) at night.

Humidity

The average relative humidity in December is 81%.

Rainfall

In December, the rain falls for 13.4 days. Throughout December, 3.46" (88mm) of precipitation is accumulated. Throughout the year, there are 149.8 rainfall days, and 35.51" (902mm) of precipitation is accumulated.

Snowfall

January through March 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 Sterlington, during the entire year, snow falls for 2.1 days and aggregates up to 0.43" (11mm) 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 December, 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 5:12 pm CST.

Sunshine

In December, the average sunshine is 4.9h.

UV index

The months with the lowest UV index are January and December, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the average person.
Note: The daily high UV index of 3 during December translates into the following recommendations:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.

Frequently asked questions

What is the usual temperature for Sterlington in December?

In Sterlington, in December, the average high-temperature is 56.3°F (13.5°C), and the average low-temperature is 42.6°F (5.9°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, in September is appraised at 100.4°F (38°C).

What is the average humidity in December?

The average relative humidity in December is 81%.

How many days does it rain in December?

In Sterlington, in December, during 13.4 rainfall days, 3.46" (88mm) of precipitation is typically accumulated.

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?

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

How many hours of daylight does Sterlington have in December?

In December, the average day length is 10h and 2min.

What time are sunrise and sunset in December?

On the first day of December, 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 5:12 pm CST.

How long on average sun shines in December?

The average sunshine duration in December is 4.9h.

What are the months with the lowest UV index?

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

How high is the UV index in December?

In Sterlington, the average daily maximum UV index in December is 3. A UV Index reading of 3 to 5 represents a medium health risk 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
Sterlington, LA

Average temperature in December - Sterlington, LA
  • Average high temperature in December: 56.3°F

The warmest month (with the highest average high temperature) is July (92.8°F).
The month with the lowest average high temperature is January (53.8°F).

  • Average low temperature in December: 42.6°F

The month with the highest average low temperature is July (73.4°F).
The coldest month (with the lowest average low temperature) is January (39.4°F).

Average pressure in December
Sterlington, LA

Average pressure in December - Sterlington, LA
  • Average pressure in December: 30.14"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

Average wind speed in December
Sterlington, LA

Average wind speed in December - Sterlington, LA
  • Average wind speed in December: 6.9mph

The windiest months (with the highest average wind speed) are March and April (7.6mph).
The calmest months (with the lowest average wind speed) are July, August and September (5.3mph).

Average humidity in December
Sterlington, LA

Average humidity in December - Sterlington, LA
  • Average humidity in December: 81%

The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is October (69%).

Average rainfall in December
Sterlington, LA

Average rainfall in December - Sterlington, LA
  • Average rainfall in December: 3.46"

The wettest month (with the highest rainfall) is April (4.17").
The driest month (with the least rainfall) is September (1.5").

Average rainfall days in December
Sterlington, LA

Average rainfall days in December - Sterlington, LA
  • Average rainfall days in December: 13.4 days

The month with the highest number of rainy days is March (15.2 days).
The month with the least rainy days is November (8.5 days).

Average snowfall in December
Sterlington, LA

Average snowfall in December - Sterlington, LA
  • Average snowfall in December: 0.04"

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

Average snowfall days in December
Sterlington, LA

Average snowfall days in December - Sterlington, LA
  • Average snowfall days in December: 0.3 days

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

Average daylight in December /
Average sunshine in December
Sterlington, LA

Average daylight in December / Average sunshine in December - Sterlington, 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 month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

Average sunshine days in December
Sterlington, LA

Average sunshine days in December - Sterlington, LA
  • Average sunshine days in December: 15 days

The month with the most sunshine days is October (20.6 days).
The month with the least sunshine days is February (13.2 days).

Average UV index in December
Sterlington, LA

Average UV index in December - Sterlington, LA
  • Average UV index in December: 3

The months with the highest UV index are 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
Sterlington, LA

Average cloud cover in December - Sterlington, LA
  • Average cloud cover in December: 48

The month with the most cloud cover is February (Cloud cover 51).
The months with the least cloud cover are June and October (Cloud cover 28).

Average visibility in December
Sterlington, LA

Average visibility in December - Sterlington, LA
  • 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).

Sterlington, Louisiana, USA

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