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's arrival signals a moderate reduction in the average high-temperature, easing from an enjoyable 64.6°F (18.1°C) in November to a still refreshing 56.3°F (13.5°C). During the month of December, the nighttime temperature falls to an average of 43.2°F (6.2°C).Humidity
In December, the average relative humidity is 80%.Rainfall
In Alto, in December, it is raining for 13.3 days, with typically 3.43" (87mm) of accumulated precipitation. In Alto, during the entire year, the rain falls for 156.1 days and collects up to 36.1" (917mm) of precipitation.Snowfall
April through December are months without snowfall.Daylight
The month with the shortest days is December, with an average of 10h and 6min of daylight.On the first day of December, sunrise is at 6:51 am and sunset at 5:02 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 5:12 pm CST.
Sunshine
The average sunshine in December is 4.9h.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The daily high UV index of 3 in December translates into this advice:
Adopt protective measures - It is advised to guard against sun damage. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in December?
What is the average humidity in December?
How many days does it rain in December?
When it does not snow?
Does it snow in Alto in December?
What is the month with the shortest days?
How many hours of daylight does Alto have in December?
What time are sunrise and sunset in December?
How long on average sun shines in December?
What are the months with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Alto, LA
- Average high temperature in December: 56.3°F
The warmest month (with the highest average high temperature) is July (91.8°F).
The month with the lowest average high temperature is January (53.6°F).
- Average low temperature in December: 43.2°F
The month with the highest average low temperature is July (73.6°F).
The coldest month (with the lowest average low temperature) is January (39.6°F).
Average pressure in December
Alto, 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
Alto, LA
- Average wind speed in December: 7.7mph
The windiest month (with the highest average wind speed) is February (8.5mph).
The calmest months (with the lowest average wind speed) are August and September (5.5mph).
Average humidity in December
Alto, 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 (68%).
Average rainfall in December
Alto, LA
- Average rainfall in December: 3.43"
The wettest month (with the highest rainfall) is April (4.06").
The driest month (with the least rainfall) is September (1.69").
Average rainfall days in December
Alto, LA
- Average rainfall days in December: 13.3 days
The month with the highest number of rainy days is July (15.6 days).
The month with the least rainy days is November (9.3 days).
Average snowfall in December
Alto, LA
- Average snowfall in December: 0"
The months with the highest snowfall are January and February (0.16").
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0").
Average snowfall days in December
Alto, LA
- Average snowfall days in December: 0.2 days
The month with the highest number of snowfall days is February (0.7 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
Alto, 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 February (Average sunshine: 4h and 48min).
Average sunshine days in December
Alto, LA
- Average sunshine days in December: 15.5 days
The month with the most sunshine days is October (20.2 days).
The month with the least sunshine days is July (12.8 days).
Average UV index in December
Alto, 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
Alto, LA
- Average cloud cover in December: 46
The month with the most cloud cover is February (Cloud cover 49).
The months with the least cloud cover are June and October (Cloud cover 27).
Average visibility in December
Alto, 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).
Alto, Louisiana, USA
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