December weather forecastGrand Coteau, LA
December
Weather in December
The first month of the winter, December, is still a refreshing month in Grand Coteau, Louisiana, with an average temperature varying between 46.4°F (8°C) and 61°F (16.1°C).Temperature
The onset of December aligns with a soft reduction in the average high-temperature, gently falling from a pleasant 68°F (20°C) in November to a comfortable 61°F (16.1°C). Throughout December, an average low-temperature of 46.4°F (8°C) is expected.Humidity
The average relative humidity in December is 81%.Rainfall
In Grand Coteau, in December, during 9.5 rainfall days, 0.98" (25mm) of precipitation is typically accumulated. Throughout the year, there are 135 rainfall days, and 12.44" (316mm) of precipitation is accumulated.Snowfall
January and December are months with snowfall in Grand Coteau. The month with the most snowfall is December, when snow falls for 0.1 days and typically aggregates up to 0.08" (2mm) of snow.Daylight
December has the shortest days of the year in Grand Coteau, with an average of 10h and 12min of daylight.On the first day of the month, sunrise is at 6:47 am and sunset at 5:07 pm. On the last day of December, sunrise is at 7:04 am and sunset at 5:18 pm CST.
Sunshine
The month with the least sunshine is December, with an average of 4.9h of sunshine.UV index
With an average maximum UV index of 3, December is the month with the lowest UV index. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index, 3 in December, converts into the following recommendations:
Prioritize safety - Recommendations to avert sunburn are shared. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Grand Coteau, LA
- Average high temperature in December: 61°F
The warmest month (with the highest average high temperature) is July (90.3°F).
The month with the lowest average high temperature is January (58.3°F).
- Average low temperature in December: 46.4°F
The month with the highest average low temperature is August (73.8°F).
The coldest month (with the lowest average low temperature) is January (43°F).
Average pressure in December
Grand Coteau, 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 (29.95"Hg).
Average wind speed in December
Grand Coteau, LA
- Average wind speed in December: 7.5mph
The windiest month (with the highest average wind speed) is February (8mph).
The calmest month (with the lowest average wind speed) is July (5mph).
Average humidity in December
Grand Coteau, LA
- Average humidity in December: 81%
The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is October (73%).
Average rainfall in December
Grand Coteau, LA
- Average rainfall in December: 0.98"
The wettest month (with the highest rainfall) is July (1.77").
The driest month (with the least rainfall) is March (0.59").
Average rainfall days in December
Grand Coteau, LA
- Average rainfall days in December: 9.5 days
The month with the highest number of rainy days is August (17.3 days).
The month with the least rainy days is November (7.1 days).
Average snowfall in December
Grand Coteau, LA
- Average snowfall in December: 0.08"
The month with the highest snowfall is December (0.08").
The months with the least snowfall are February, March, April, May, June, July, August, September, October and November (0").
Average snowfall days in December
Grand Coteau, LA
- Average snowfall days in December: 0.1 days
The month with the highest number of snowfall days is January (0.4 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
Grand Coteau, LA
- Average daylight in December: 10h and 12min
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 54min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).
Average sunshine days in December
Grand Coteau, LA
- Average sunshine days in December: 18.7 days
The month with the most sunshine days is October (21.5 days).
The month with the least sunshine days is August (8.3 days).
Average UV index in December
Grand Coteau, LA
- Average UV index in December: 3
The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in December
Grand Coteau, LA
- Average cloud cover in December: 47
The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is October (Cloud cover 27).
Average visibility in December
Grand Coteau, LA
- Average visibility in December: 6mi
The months with the highest visibility are January, February, June, October, November and December (6mi).
The months with the lowest visibility are March, April, May, July, August and September (5mi).
