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 arrival of December, Mason experiences a modest decline in average high-temperatures, transitioning from a comfortable 64.9°F (18.3°C) in November to a moderate 57°F (13.9°C). Mason's nighttime temperature during December is consistently averaged at a frosty 43.7°F (6.5°C).Humidity
In December, the average relative humidity is 80%.Rainfall
In December, the rain falls for 13 days. Throughout December, 3.35" (85mm) of precipitation is accumulated. Throughout the year, there are 163.6 rainfall days, and 37.48" (952mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through March and December. December is the first month it typically snows. Throughout December, in the average 0.4 snowfall days, it receives 0.08" (2mm) of snow. Throughout the year, there are 1.9 snowfall days, and 0.87" (22mm) of snow is accumulated.Daylight
With an average of 10h and 6min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 6:50 am and sunset at 5:02 pm. On the last day of December, sunrise is at 7:08 am and sunset at 5:13 pm CST.
Sunshine
The month with the least sunshine is December, with an average of 4.9h of sunshine.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 3. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the ordinary person.Note: A daily high UV index of 3 in December leads to these guidelines:
Act with care - Obligation to protect against skin and eye damage is highlighted. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Boost your sun resistance with garments that are densely woven yet spacious. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in December?
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?
When is the sunrise / sunset in December in Mason?
What is the month with the least sunshine?
How long on average sun shines in December?
What is the month with the lowest UV index?
How high is the UV index in December?
Average temperature in December
Mason, LA
- Average high temperature in December: 57°F
The warmest month (with the highest average high temperature) is July (91.4°F).
The month with the lowest average high temperature is January (54.7°F).
- Average low temperature in December: 43.7°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 (39.9°F).
Average pressure in December
Mason, 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
Mason, LA
- Average wind speed in December: 7.6mph
The windiest month (with the highest average wind speed) is February (8.3mph).
The calmest month (with the lowest average wind speed) is September (5.3mph).
Average humidity in December
Mason, LA
- Average humidity in December: 80%
The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is October (69%).
Average rainfall in December
Mason, LA
- Average rainfall in December: 3.35"
The wettest month (with the highest rainfall) is April (3.54").
The driest months (with the least rainfall) are September and November (2.28").
Average rainfall days in December
Mason, LA
- Average rainfall days in December: 13 days
The month with the highest number of rainy days is August (17.8 days).
The month with the least rainy days is November (9.1 days).
Average snowfall in December
Mason, LA
- Average snowfall in December: 0.08"
The month with the highest snowfall is January (0.35").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in December
Mason, LA
- Average snowfall days in December: 0.4 days
The month with the highest number of snowfall days is January (0.7 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Mason, LA
- Average daylight in December: 10h and 1min
The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in December: 4h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).
Average sunshine days in December
Mason, LA
- Average sunshine days in December: 15.7 days
The month with the most sunshine days is October (20.7 days).
The month with the least sunshine days is August (11.3 days).
Average UV index in December
Mason, 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
Mason, LA
- Average cloud cover in December: 46
The month with the most cloud cover is February (Cloud cover 48).
The months with the least cloud cover are June and October (Cloud cover 27).
Average visibility in December
Mason, 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).
Mason, Louisiana, USA
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