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 arrival of December suggests a slight decrease in the average high-temperature, moving from an agreeable 68.9°F (20.5°C) in November to a refreshing 61.9°F (16.6°C). Johnson Bayou Landing, in December, observes a steady average low-temperature of 50.2°F (10.1°C).Humidity
The average relative humidity in December in Johnson Bayou Landing is 79%.Rainfall
In Johnson Bayou Landing, in December, during 8.7 rainfall days, 0.71" (18mm) of precipitation is typically accumulated. Throughout the year, there are 132.6 rainfall days, and 12.09" (307mm) of precipitation is accumulated.Snowfall
The only month with snowfall is December. December is the month with the most snowfall. Snow falls for 0.1 days and accumulates 0.04" (1mm) of snow.Daylight
The month with the shortest days is December, with an average of 10h and 18min of daylight.On the first day of the month, sunrise is at 6:53 am and sunset at 5:15 pm. On the last day of December, sunrise is at 7:10 am and sunset at 5:26 pm CST.
Sunshine
December has the least sunshine of the year in Johnson Bayou Landing, with an average of 5h of sunshine.UV index
The month with the lowest UV index is December, with an average maximum UV index of 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for average individuals.Note: The UV index of 3 during December translates into the following guidance:
Undertake precautions - Guarding against sun damage is counselled. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Johnson Bayou Landing in December?
What is the average humidity in December?
How much does it rain in December?
When does it snow the most?
When does it start to snow?
What is the month with the shortest days?
How many hours of daylight does Johnson Bayou Landing have in December?
When is the sunrise / sunset in December?
What is the month with the least sunshine?
How many hours of sunshine does Johnson Bayou Landing have in December?
What is the month with the lowest UV index?
How high is the UV index in December?
Average temperature in December
Johnson Bayou Landing, LA
- Average high temperature in December: 61.9°F
The warmest month (with the highest average high temperature) is August (91°F).
The month with the lowest average high temperature is January (59.5°F).
- Average low temperature in December: 50.2°F
The month with the highest average low temperature is July (78.4°F).
The coldest month (with the lowest average low temperature) is January (46.9°F).
Average pressure in December
Johnson Bayou Landing, LA
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Johnson Bayou Landing, LA
- Average wind speed in December: 8.9mph
The windiest month (with the highest average wind speed) is April (10.1mph).
The calmest month (with the lowest average wind speed) is August (7mph).
Average humidity in December
Johnson Bayou Landing, 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 (71%).
Average rainfall in December
Johnson Bayou Landing, LA
- Average rainfall in December: 0.71"
The wettest month (with the highest rainfall) is August (2.09").
The driest month (with the least rainfall) is April (0.43").
Average rainfall days in December
Johnson Bayou Landing, LA
- Average rainfall days in December: 8.7 days
The month with the highest number of rainy days is August (17.9 days).
The months with the least rainy days are January and November (7.8 days).
Average snowfall in December
Johnson Bayou Landing, LA
- Average snowfall in December: 0.04"
The month with the highest snowfall is December (0.04").
The months with the least snowfall are January, February, March, April, May, June, July, August, September, October and November (0").
Average snowfall days in December
Johnson Bayou Landing, 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 March, April, May, June, July, August, September, October and November (0 days).
Average daylight in December /
Average sunshine in December
Johnson Bayou Landing, LA
- Average daylight in December: 10h and 2min
The month with the longest days is June (Average daylight: 14h and 0min).
The month with the shortest days is December (Average daylight: 10h and 18min).
- Average sunshine in December: 5h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).
Average sunshine days in December
Johnson Bayou Landing, LA
- Average sunshine days in December: 19.5 days
The month with the most sunshine days is January (21.3 days).
The month with the least sunshine days is August (8.8 days).
Average UV index in December
Johnson Bayou Landing, 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
Johnson Bayou Landing, LA
- Average cloud cover in December: 47
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is October (Cloud cover 26).
Average visibility in December
Johnson Bayou Landing, 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).
Johnson Bayou Landing, Louisiana, USA
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