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
With the beginning of December, the average high-temperature shows a small decrease, transitioning from a pleasant 68.9°F (20.5°C) in November to an enjoyable 61.9°F (16.6°C). During the nights in December, Westchester experiences a consistent average temperature of 46.9°F (8.3°C).Humidity
February and December, with an average relative humidity of 81%, are the most humid months.Rainfall
In Westchester, in December, during 14.3 rainfall days, 3.43" (87mm) of precipitation is typically accumulated. In Westchester, during the entire year, the rain falls for 187.5 days and collects up to 40" (1016mm) of precipitation.Snowfall
Months with snowfall are January and December. December is the first month it typically snows. Throughout December, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow. In Westchester, during the entire year, snow falls for 0.4 days and aggregates up to 0.24" (6mm) of snow.Daylight
The month with the shortest days is December, with an average of 10h and 12min of daylight.On the first day of the month, sunrise is at 6:43 am and sunset at 5:03 pm. On the last day of December, sunrise is at 7:00 am and sunset at 5:14 pm CST.
Sunshine
December has the least sunshine of the year in Westchester, with an average of 5h of sunshine.UV index
December is the month with the lowest UV index, with an average maximum UV index of 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: A daily high UV index of 3 in December leads to these guidelines:
Exercise caution. Those with pale skin may experience burns in less than half an hour. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. To cut down UV radiation exposure by about half, sport a wide-brim hat. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average December temperature?
What are the most humid months?
What is the average humidity in December?
How many days does it rain in December?
When does it start snowing?
What is the month with the shortest days?
What is the average length of the day in December in Westchester?
When are sunrise and sunset in December?
What is the month with the least sunshine?
How many hours of sunshine does Westchester have in December?
When is the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Westchester, LA
- Average high temperature in December: 61.9°F
The warmest month (with the highest average high temperature) is July (91.6°F).
The month with the lowest average high temperature is January (59°F).
- Average low temperature in December: 46.9°F
The month with the highest average low temperature is August (74.7°F).
The coldest month (with the lowest average low temperature) is January (43.2°F).
Average pressure in December
Westchester, 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 and August (29.96"Hg).
Average wind speed in December
Westchester, LA
- Average wind speed in December: 6.5mph
The windiest month (with the highest average wind speed) is February (6.8mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).
Average humidity in December
Westchester, LA
- Average humidity in December: 81%
The months with the highest relative humidity are February and December (81%).
The month with the lowest relative humidity is October (73%).
Average rainfall in December
Westchester, LA
- Average rainfall in December: 3.43"
The wettest month (with the highest rainfall) is July (5.47").
The driest month (with the least rainfall) is November (1.93").
Average rainfall days in December
Westchester, LA
- Average rainfall days in December: 14.3 days
The month with the highest number of rainy days is August (23.8 days).
The month with the least rainy days is November (8.9 days).
Average snowfall in December
Westchester, LA
- Average snowfall in December: 0.04"
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
Westchester, 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
Westchester, 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 0min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).
Average sunshine days in December
Westchester, LA
- Average sunshine days in December: 15.4 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is July (5.9 days).
Average UV index in December
Westchester, 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
Westchester, LA
- Average cloud cover in December: 48
The month with the most cloud cover is December (Cloud cover 48).
The month with the least cloud cover is October (Cloud cover 27).
Average visibility in December
Westchester, LA
- Average visibility in December: 6mi
The months with the highest visibility are January, October, November and December (6mi).
The months with the lowest visibility are February, March, April, May, June, July, August and September (5mi).
Westchester, Louisiana, USA
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