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 brings a slight decrease in temperature, down from a comfortable 64.6°F (18.1°C) in November to a mild 56.5°F (13.6°C). Jamestown temperatures generally rest at a low of 42.1°F (5.6°C) during the December nights.Humidity
The average relative humidity in December is 81%.Rainfall
In December, the rain falls for 12.5 days. Throughout December, 3.46" (88mm) of precipitation is accumulated. Throughout the year, in Jamestown, there are 158.9 rainfall days, and 39.17" (995mm) 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 0.12" (3mm) of snow. Throughout the year, there are 3.2 snowfall days, and 0.94" (24mm) of snow is accumulated.Daylight
With an average of 10h and 6min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 6:56 am and sunset at 5:07 pm. On the last day of December, in Jamestown, sunrise is at 7:14 am and sunset at 5:18 pm CST.
Sunshine
With an average of 4.9h of sunshine, December has the least sunshine of the year in Jamestown.UV index
The months with the lowest UV index in Jamestown are January and December, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: The UV index of 3 in December translates into these instructions:
Ensure safety - Recommendations to avert sunburn are presented. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Opt for tightly woven and loose clothing to enhance protection from the Sun. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
Frequently asked questions
What is the average December temperature in Jamestown?
What is the average humidity in December in Jamestown?
How many days does it rain in December in Jamestown?
When does it start snowing in Jamestown?
What is the month with the shortest days in Jamestown?
What is the average length of the day in December in Jamestown?
What time are sunrise and sunset in December in Jamestown?
What is the month with the least sunshine in Jamestown?
How long on average sun shines in December in Jamestown?
What is the month with the lowest UV index in Jamestown?
What is the UV index intensity in December in Jamestown?
Average temperature in December
Jamestown, LA
- Average high temperature in December: 56.5°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 (54.1°F).
- Average low temperature in December: 42.1°F
The month with the highest average low temperature is July (73.2°F).
The coldest month (with the lowest average low temperature) is January (38.5°F).
Average pressure in December
Jamestown, 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
Jamestown, 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 and August (4.9mph).
Average humidity in December
Jamestown, 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
Jamestown, LA
- Average rainfall in December: 3.46"
The wettest month (with the highest rainfall) is May (4.17").
The driest months (with the least rainfall) are July and September (2.52").
Average rainfall days in December
Jamestown, LA
- Average rainfall days in December: 12.5 days
The month with the highest number of rainy days is March (15.6 days).
The month with the least rainy days is October (9.5 days).
Average snowfall in December
Jamestown, LA
- Average snowfall in December: 0.12"
The month with the highest snowfall is February (0.47").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in December
Jamestown, LA
- Average snowfall days in December: 0.6 days
The month with the highest number of snowfall days is February (1.1 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
Jamestown, 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 August (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).
Average sunshine days in December
Jamestown, LA
- Average sunshine days in December: 15.4 days
The month with the most sunshine days is October (19.5 days).
The month with the least sunshine days is February (12.9 days).
Average UV index in December
Jamestown, 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
Jamestown, LA
- Average cloud cover in December: 49
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 29).
Average visibility in December
Jamestown, LA
- Average visibility in December: 5mi
The months with the highest visibility are June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March, April, May and December (5mi).
Jamestown, Louisiana, USA
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