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 beginning of December brings a minor change in the average high-temperature, shifting from an enjoyable 66.7°F (19.3°C) in November to a moderate 59°F (15°C). Simpson throughout December, records an average low-temperature of 44.2°F (6.8°C).Humidity
The average relative humidity in December in Simpson is 81%.Rainfall
In Simpson, during December, the rain falls for 11.6 days and regularly aggregates up to 1.89" (48mm) of precipitation. Throughout the year, there are 156.9 rainfall days, and 25.98" (660mm) of precipitation is accumulated.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 0.16" (4mm) of snow. Throughout the year, there are 1.4 snowfall days, and 0.71" (18mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 10h and 12min of daylight.On the first day of December, sunrise is at 6:53 am and sunset at 5:09 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 5:20 pm CST.
Sunshine
The month with the least sunshine is December, with an average of 4.9h 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 estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum UV index, 3 during December, leads to the following recommendations:
Ensure safety - Sun damage prevention is strongly urged. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Simpson in December?
What is the average humidity in December in Simpson?
How much does it rain in December?
When does it start snowing in Simpson?
What is the month with the shortest days?
How many hours of daylight does Simpson have in December?
When are sunrise and sunset in December?
What is the month with the least sunshine in Simpson?
How many hours of sunshine does Simpson have in December?
What is the month with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Simpson, LA
- Average high temperature in December: 59°F
The warmest month (with the highest average high temperature) is July (93.9°F).
The month with the lowest average high temperature is January (56.8°F).
- Average low temperature in December: 44.2°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
Simpson, 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 (29.93"Hg).
Average wind speed in December
Simpson, LA
- Average wind speed in December: 6.5mph
The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest months (with the lowest average wind speed) are July and August (4.9mph).
Average humidity in December
Simpson, 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 (71%).
Average rainfall in December
Simpson, LA
- Average rainfall in December: 1.89"
The wettest month (with the highest rainfall) is August (3.82").
The driest month (with the least rainfall) is November (1.34").
Average rainfall days in December
Simpson, LA
- Average rainfall days in December: 11.6 days
The month with the highest number of rainy days is August (18.8 days).
The month with the least rainy days is November (8.2 days).
Average snowfall in December
Simpson, LA
- Average snowfall in December: 0.16"
The month with the highest snowfall is January (0.51").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").
Average snowfall days in December
Simpson, 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 and October (0 days).
Average daylight in December /
Average sunshine in December
Simpson, 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 months with the most sunshine are June and July (Average sunshine: 10h and 6min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).
Average sunshine days in December
Simpson, LA
- Average sunshine days in December: 16.7 days
The month with the most sunshine days is October (19.5 days).
The month with the least sunshine days is August (9.8 days).
Average UV index in December
Simpson, LA
- Average UV index in December: 3
The months with the highest UV index are May, 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
Simpson, LA
- Average cloud cover in December: 49
The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is October (Cloud cover 30).
Average visibility in December
Simpson, LA
- Average visibility in December: 5mi
The months with the highest visibility are October and November (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September and December (5mi).
Simpson, Louisiana, USA
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