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 shift from November to December coincides with a small decrease in the average high-temperature, down to a mild 59.7°F (15.4°C) from a refreshing 66.7°F (19.3°C). McNary's average low-temperature in the month of December is recorded at a chilly 44.8°F (7.1°C).Humidity
The average relative humidity in December is 82%.Rainfall
In McNary, Louisiana, in December, during 13.6 rainfall days, 3.35" (85mm) of precipitation is typically accumulated. In McNary, during the entire year, the rain falls for 159.5 days and collects up to 34.25" (870mm) of precipitation.Snowfall
Months with snowfall are January, February and December. December is the first month it typically snows. Throughout December, in the average 0.2 snowfall days, it receives 0.08" (2mm) of snow. Throughout the year, there are 1 snowfall days, and 0.71" (18mm) of snow is accumulated.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 6:51 am and sunset at 5:07 pm. On the last day of December, sunrise is at 7:08 am and sunset at 5:18 pm CST.
Sunshine
With an average of 4.8h of sunshine, December has the least sunshine of the year.UV index
The months with the lowest UV index in McNary are January and December, with an average maximum UV index of 3. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the average person.Note: The maximum daily UV index, 3 in December, converts into the following recommendations:
Act with care - The need to guard against sun damage is communicated. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average December temperature?
What is the average humidity in December in McNary?
How many days does it rain in December?
When does it start to snow in McNary?
What is the month with the shortest days?
What is the average length of the day in December?
When are sunrise and sunset in December?
What is the month with the least sunshine in McNary?
How long on average sun shines in December?
What are the months with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
McNary, LA
- Average high temperature in December: 59.7°F
The warmest month (with the highest average high temperature) is July (92.1°F).
The month with the lowest average high temperature is January (57°F).
- Average low temperature in December: 44.8°F
The month with the highest average low temperature is August (73.2°F).
The coldest month (with the lowest average low temperature) is January (41°F).
Average pressure in December
McNary, LA
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
McNary, LA
- Average wind speed in December: 7.1mph
The windiest month (with the highest average wind speed) is February (7.6mph).
The calmest month (with the lowest average wind speed) is July (5.1mph).
Average humidity in December
McNary, LA
- Average humidity in December: 82%
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
McNary, LA
- Average rainfall in December: 3.35"
The wettest month (with the highest rainfall) is August (3.74").
The driest month (with the least rainfall) is September (2.05").
Average rainfall days in December
McNary, LA
- Average rainfall days in December: 13.6 days
The month with the highest number of rainy days is August (16.8 days).
The month with the least rainy days is October (9.7 days).
Average snowfall in December
McNary, LA
- Average snowfall in December: 0.08"
The month with the highest snowfall is January (0.59").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").
Average snowfall days in December
McNary, LA
- Average snowfall days in December: 0.2 days
The month with the highest number of snowfall days is January (0.5 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in December /
Average sunshine in December
McNary, 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: 4h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).
Average sunshine days in December
McNary, LA
- Average sunshine days in December: 14.4 days
The month with the most sunshine days is October (20 days).
The month with the least sunshine days is August (12.3 days).
Average UV index in December
McNary, LA
- Average UV index in December: 3
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in December
McNary, LA
- Average cloud cover in December: 49
The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is October (Cloud cover 30).
Average visibility in December
McNary, LA
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, October, November and December (6mi).
The months with the lowest visibility are April, May, June, July, August and September (5mi).
McNary, Louisiana, USA
Weather forecast for your location
2. Allow the app to use your location