Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
The start of December involves a subtle temperature drop, shifting from a pleasant 68.9°F (20.5°C) in November to an enjoyable 61.5°F (16.4°C). In Westlake, in December, the average low-temperature is a chilly 48°F (8.9°C).Humidity
The average relative humidity in December is 79%.Rainfall
In Westlake, in December, it is raining for 13.8 days, with typically 3.31" (84mm) of accumulated precipitation. In Westlake, during the entire year, the rain falls for 182.1 days and collects up to 39.25" (997mm) of precipitation.Snowfall
January and December are months with snowfall. December is the first month it typically snows. Throughout December, in the average 0.1 snowfall days, it receives 0.12" (3mm) of snow. In Westlake, during the entire year, snow falls for 0.4 days and aggregates up to 0.31" (8mm) of snow.Daylight
December has the shortest days of the year, with an average of 10h and 12min of daylight.On the first day of the month, sunrise is at 6:52 am and sunset at 5:12 pm. On the last day of December, sunrise is at 7:09 am and sunset at 5:23 pm CST.
Sunshine
December has the least sunshine of the year, with an average of 5.1h of sunshine.UV index
The month with the lowest UV index is December, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for average individuals.Note: In December, a daily UV index of 3 turns into the following recommendations:
Take precautions - Protection against sun damage is advised. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are December temperatures?
What is the average humidity in December?
How many days does it rain in December in Westlake?
When does it start to snow?
What is the month with the shortest days?
What is the average length of the day in December?
When is the sunrise / sunset in December in Westlake?
What is the month with the least sunshine?
How many hours of sunshine does Westlake have in December?
When is the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Westlake, LA
- Average high temperature in December: 61.5°F
The warmest month (with the highest average high temperature) is August (91.4°F).
The month with the lowest average high temperature is January (59.4°F).
- Average low temperature in December: 48°F
The month with the highest average low temperature is July (75.7°F).
The coldest month (with the lowest average low temperature) is January (44.4°F).
Average pressure in December
Westlake, LA
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June and August (29.94"Hg).
Average wind speed in December
Westlake, LA
- Average wind speed in December: 8.5mph
The windiest month (with the highest average wind speed) is April (9.3mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in December
Westlake, LA
- Average humidity in December: 79%
The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Westlake, LA
- Average rainfall in December: 3.31"
The wettest month (with the highest rainfall) is August (5.75").
The driest month (with the least rainfall) is February (2.32").
Average rainfall days in December
Westlake, LA
- Average rainfall days in December: 13.8 days
The month with the highest number of rainy days is August (22.2 days).
The month with the least rainy days is November (10.1 days).
Average snowfall in December
Westlake, LA
- Average snowfall in December: 0.12"
The month with the highest snowfall is January (0.2").
The months with the least snowfall are February, March, April, May, June, July, August, September, October and November (0").
Average snowfall days in December
Westlake, LA
- Average snowfall days in December: 0.1 days
The month with the highest number of snowfall days is January (0.3 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
Westlake, LA
- Average daylight in December: 10h and 1min
The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).
- Average sunshine in December: 5h and 1min
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
Westlake, LA
- Average sunshine days in December: 15.6 days
The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is August (7.3 days).
Average UV index in December
Westlake, LA
- Average UV index in December: 3
The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in December
Westlake, LA
- Average cloud cover in December: 45
The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is October (Cloud cover 25).
Average visibility in December
Westlake, 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).
Westlake, Louisiana, USA
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