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
December brings a slight decrease in the average high-temperature, shifting from a pleasant 68.9°F (20.5°C) in November to a refreshing 61.9°F (16.6°C). During December, the average low-temperature is a frosty 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, it is raining for 14.3 days, with typically 3.43" (87mm) of accumulated precipitation. Throughout the year, there are 187.5 rainfall days, and 40" (1016mm) of precipitation is accumulated.Snowfall
Months with snowfall in Westchester are January and December. December is the first month it typically snows in Westchester. Throughout December, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow. Throughout the year, there are 0.4 snowfall days, and 0.24" (6mm) of snow is accumulated.Daylight
December has the shortest days of the year in Westchester, with an average of 10h and 12min of daylight.On the first day of December in Westchester, sunrise is at 6:43 am and sunset at 5:03 pm. On the last day of the month, 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
The month with the lowest UV index in Westchester is December, with an average maximum UV index of 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum UV index of 3 during December leads to these instructions:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. 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. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Frequently asked questions
What is the usual temperature for Westchester in December?
What is the most humid month in Westchester?
What is the average humidity in December in Westchester?
How many days does it rain in December in Westchester?
When does it start snowing in Westchester?
What is the month with the shortest days in Westchester?
What is the average length of the day in December in Westchester?
When is the sunrise / sunset in December in Westchester?
What is the month with the least sunshine in Westchester?
How many hours of sunshine does Westchester have in December?
What is the month with the lowest UV index in Westchester?
How high is the UV index in December in Westchester?
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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