December weather forecastVacherie, LA

December

Weather in December

The first month of the winter, December, is still a refreshing month in Vacherie, Louisiana, with an average temperature fluctuating between 63°F (17.2°C) and 49.5°F (9.7°C).

Temperature

Vacherie observes a small decrease in the average high-temperature with the arrival of December, falling from November's agreeable 68.9°F (20.5°C) to a comfortable 63°F (17.2°C). In December, the average low-temperature records at a frosty 49.5°F (9.7°C) during the nights.

Humidity

The months with the highest humidity are February, July through September and December, with an average relative humidity of 79%.

Rainfall

In Vacherie, during December, the rain falls for 12.8 days and regularly aggregates up to 2.24" (57mm) of precipitation. In Vacherie, during the entire year, the rain falls for 172.6 days and collects up to 30.2" (767mm) of precipitation.

Snowfall

February through December are months without snowfall.

Daylight

The month with the shortest days is December, with an average of 10h and 18min of daylight.
On the first day of December, sunrise is at 6:41 am and sunset at 5:02 pm. On the last day of the month, sunrise is at 6:58 am and sunset at 5:13 pm CST.

Sunshine

December has the least sunshine of the year, with an average of 5.1h of sunshine.

UV index

December is the month with the lowest UV index, with an average maximum UV index of 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the average person.
Note: In December, a daily UV index of 3 turns into the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.

Frequently asked questions

In Vacherie, 63°F (17.2°C) is the average high-temperature and 49.5°F (9.7°C) is the average low-temperature during December. The average heat index (a.k.a. 'real feel', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, in September is calculated to be 102.2°F (39°C).

The months with the highest humidity are February, July through September and December, with an average relative humidity of 79%.

In December, the average relative humidity is 79%.

In December, the rain falls for 12.8 days. Throughout December, 2.24" (57mm) of precipitation is accumulated.

February through December are months without snowfall.

In Vacherie, in December, it doesn't snow. In January, it regularly snows.

The month with the shortest days is December, with an average of 10h and 18min of daylight.

In December, the average day length is 10h and 15min.

On the first day of December, sunrise is at 6:41 am and sunset at 5:02 pm. On the last day of the month, sunrise is at 6:58 am and sunset at 5:13 pm CST.

December has the least sunshine of the year, with an average of 5.1h of sunshine.

In December, the average sunshine duration is 5.1h.

December is the month with the lowest UV index, with an average maximum UV index of 3.

The average daily maximum UV index in December is 3. A UV Index reading of 3 to 5 represents a moderate health threat from exposure to the Sun's UV radiation.
Average high temperature
Average low temperature
Average pressure
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Vacherie, LA

  • Average high temperature in December: 63°F

The warmest months (with the highest average high temperature) are July and August (89.8°F).
The month with the lowest average high temperature is January (60.3°F).

  • Average low temperature in December: 49.5°F

The month with the highest average low temperature is August (75.4°F).
The coldest month (with the lowest average low temperature) is January (45.1°F).

Average pressure in December
Vacherie, LA

  • Average pressure in December: 30.12"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.97"Hg).

Average wind speed in December
Vacherie, LA

  • Average wind speed in December: 7.5mph

The windiest month (with the highest average wind speed) is February (7.8mph).
The calmest months (with the lowest average wind speed) are July and August (5mph).

Average humidity in December
Vacherie, LA

  • Average humidity in December: 79%

The months with the highest relative humidity are February, July, August, September and December (79%).
The month with the lowest relative humidity is October (74%).

Average rainfall in December
Vacherie, LA

  • Average rainfall in December: 2.24"

The wettest month (with the highest rainfall) is July (4.88").
The driest month (with the least rainfall) is November (1.26").

Average rainfall days in December
Vacherie, LA

  • Average rainfall days in December: 12.8 days

The month with the highest number of rainy days is August (22.3 days).
The month with the least rainy days is November (8 days).

Average snowfall in December
Vacherie, LA

  • Average snowfall in December: 0"

The month with the highest snowfall is January (0.04").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").

Average snowfall days in December
Vacherie, LA

  • Average snowfall days in December: 0.1 days

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

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

  • Average daylight in December: 10h and 18min

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

  • Average sunshine in December: 5h and 6min

The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).

Average sunshine days in December
Vacherie, LA

  • Average sunshine days in December: 16.5 days

The month with the most sunshine days is November (20.3 days).
The month with the least sunshine days is July (6.4 days).

Average UV index in December
Vacherie, LA

  • Average UV index in December: 3

The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).

Average cloud cover in December
Vacherie, LA

  • Average cloud cover in December: 46

The month with the most cloud cover is December (Cloud cover 46).
The month with the least cloud cover is October (Cloud cover 25).

Average visibility in December
Vacherie, 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).