December weather forecastJamestown, TN
December
Weather in December
The first month of the winter, December, is also a frosty month in Jamestown, Tennessee, with an average temperature ranging between min 33.6°F (0.9°C) and max 46.9°F (8.3°C).Temperature
December's arrival coincides with a soft drop in the average high-temperature, subtly decreasing from November's fresh 54.7°F (12.6°C) to a chilly 46.9°F (8.3°C). In the month of December, the average temperature in Jamestown dips to a wintry 33.6°F (0.9°C) during the night.Humidity
December is the most humid month, with an average relative humidity of 81%.Rainfall
In Jamestown, in December, it is raining for 12.8 days, with typically 3.19" (81mm) of accumulated precipitation. In Jamestown, during the entire year, the rain falls for 170.9 days and collects up to 37.68" (957mm) of precipitation.Snowfall
January through April, October through December are months with snowfall in Jamestown, Tennessee. In Jamestown, Tennessee, in December, snow falls for 5.2 days, with typically accumulated 1.65" (42mm) of snow. In Jamestown, Tennessee, during the entire year, snow falls for 26.1 days and aggregates up to 9.72" (247mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 42min of daylight.On the first day of December, sunrise is at 6:33 am and sunset at 4:24 pm. On the last day of the month, sunrise is at 6:51 am and sunset at 4:34 pm CST.
Sunshine
In Jamestown, Tennessee, the average sunshine in December is 4.5h.UV index
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: In December, a daily UV index of 2 turns into the following recommendations:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Jamestown, TN
- Average high temperature in December: 46.9°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (41.7°F).
- Average low temperature in December: 33.6°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (27.7°F).
Average pressure in December
Jamestown, TN
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).
Average wind speed in December
Jamestown, TN
- Average wind speed in December: 6.6mph
The windiest month (with the highest average wind speed) is February (7.3mph).
The calmest month (with the lowest average wind speed) is August (4mph).
Average humidity in December
Jamestown, TN
- Average humidity in December: 81%
The month with the highest relative humidity is December (81%).
The months with the lowest relative humidity are April, June, August, October and November (77%).
Average rainfall in December
Jamestown, TN
- Average rainfall in December: 3.19"
The wettest month (with the highest rainfall) is February (4.13").
The driest month (with the least rainfall) is September (2.32").
Average rainfall days in December
Jamestown, TN
- Average rainfall days in December: 12.8 days
The month with the highest number of rainy days is July (18.2 days).
The month with the least rainy days is November (10.4 days).
Average snowfall in December
Jamestown, TN
- Average snowfall in December: 1.65"
The month with the highest snowfall is February (3.94").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Jamestown, TN
- Average snowfall days in December: 5.2 days
The month with the highest number of snowfall days is January (7.1 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Jamestown, TN
- Average daylight in December: 9h and 42min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in December: 4h and 30min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).
Average sunshine days in December
Jamestown, TN
- Average sunshine days in December: 13.5 days
The month with the most sunshine days is October (18 days).
The month with the least sunshine days is July (10.5 days).
Average UV index in December
Jamestown, TN
- Average UV index in December: 2
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in December
Jamestown, TN
- Average cloud cover in December: 54
The month with the most cloud cover is February (Cloud cover 57).
The month with the least cloud cover is June (Cloud cover 32).
Average visibility in December
Jamestown, TN
- Average visibility in December: 5mi
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).
