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 heralds a minor drop in average high-temperature, sliding from November's refreshing 64°F (17.8°C) to a mild 56.3°F (13.5°C). During December, Sibley experiences a consistent low-temperature average of 41.4°F (5.2°C).Humidity
The average relative humidity in December is 81%.Rainfall
In Sibley, in December, it is raining for 12.4 days, with typically 3.58" (91mm) of accumulated precipitation. Throughout the year, there are 162 rainfall days, and 39.37" (1000mm) 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 0.6 snowfall days, it receives 0.08" (2mm) of snow. Throughout the year, there are 3.3 snowfall days, and 0.98" (25mm) of snow is accumulated.Daylight
December has the shortest days of the year in Sibley, with an average of 10h and 6min of daylight.On the first day of the month, sunrise is at 6:57 am and sunset at 5:07 pm. On the last day of December, sunrise is at 7:14 am and sunset at 5:18 pm CST.
Sunshine
The months with the least sunshine are February and December, with an average of 5h 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 reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: In December, the maximum UV index of 3 suggests this advice:
Be vigilant - Suggestions to stave off sun damage are provided. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
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 much 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 are sunrise and sunset in December?
What are the months with the least sunshine?
How many hours of sunshine does Sibley have in December?
What is the month with the lowest UV index?
How high is the UV index in December in Sibley?
Average temperature in December
Sibley, LA
- Average high temperature in December: 56.3°F
The warmest months (with the highest average high temperature) are July and August (94.6°F).
The month with the lowest average high temperature is January (53.8°F).
- Average low temperature in December: 41.4°F
The months with the highest average low temperature are July and August (73°F).
The coldest month (with the lowest average low temperature) is January (37.9°F).
Average pressure in December
Sibley, LA
- Average pressure in December: 30.13"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
Sibley, LA
- Average wind speed in December: 6.1mph
The windiest month (with the highest average wind speed) is April (7.1mph).
The calmest months (with the lowest average wind speed) are July, August and September (5mph).
Average humidity in December
Sibley, LA
- Average humidity in December: 81%
The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is August (69%).
Average rainfall in December
Sibley, LA
- Average rainfall in December: 3.58"
The wettest month (with the highest rainfall) is April (4.21").
The driest month (with the least rainfall) is September (2.36").
Average rainfall days in December
Sibley, LA
- Average rainfall days in December: 12.4 days
The month with the highest number of rainy days is March (15.8 days).
The month with the least rainy days is October (10.2 days).
Average snowfall in December
Sibley, LA
- Average snowfall in December: 0.08"
The month with the highest snowfall is February (0.55").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in December
Sibley, LA
- Average snowfall days in December: 0.6 days
The month with the highest number of snowfall days is February (1.2 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
Sibley, LA
- Average daylight in December: 10h and 1min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in December: 5h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The months with the least sunshine are February and December (Average sunshine: 5h and 0min).
Average sunshine days in December
Sibley, LA
- Average sunshine days in December: 16 days
The month with the most sunshine days is October (19.6 days).
The month with the least sunshine days is August (12.9 days).
Average UV index in December
Sibley, 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
Sibley, LA
- Average cloud cover in December: 48
The month with the most cloud cover is February (Cloud cover 51).
The months with the least cloud cover are August and September (Cloud cover 28).
Average visibility in December
Sibley, LA
- Average visibility in December: 5mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).
Sibley, Louisiana, USA
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