December weather forecastSydnor Addition, WV
December
Weather in December
The first month of the winter, December, is also a frosty month in Sydnor Addition, West Virginia, with temperature in the range of an average low of 33.1°F (0.6°C) and an average high of 45.1°F (7.3°C).Temperature
A modest decline in the average high-temperature is seen during December, decreasing from a cool 54°F (12.2°C) in November to a chilly 45.1°F (7.3°C). Throughout the month of December, Sydnor Addition sees a steady low-temperature average of 33.1°F (0.6°C).Humidity
The average relative humidity in December is 80%.Rainfall
In Sydnor Addition, during December, the rain falls for 11 days and regularly aggregates up to 2.91" (74mm) of precipitation. In Sydnor Addition, during the entire year, the rain falls for 163.6 days and collects up to 30.43" (773mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Sydnor Addition. In December, it is snowing for 6 days. Throughout December, 3.9" (99mm) of snow is accumulated. In Sydnor Addition, during the entire year, snow falls for 32.9 days and aggregates up to 16.81" (427mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 36min of daylight.On the first day of December, sunrise is at 7:25 am and sunset at 5:10 pm. On the last day of the month, sunrise is at 7:43 am and sunset at 5:20 pm EST.
Sunshine
In Sydnor Addition, 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 low health risk from exposure to the Sun's UV radiation for the average person.Note: The maximum UV index of 2 during December translates into these guidelines:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Sydnor Addition, WV
- Average high temperature in December: 45.1°F
The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is January (40.1°F).
- Average low temperature in December: 33.1°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (26.8°F).
Average pressure in December
Sydnor Addition, WV
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in December
Sydnor Addition, WV
- Average wind speed in December: 5.8mph
The windiest month (with the highest average wind speed) is April (6.4mph).
The calmest month (with the lowest average wind speed) is August (3.9mph).
Average humidity in December
Sydnor Addition, WV
- Average humidity in December: 80%
The month with the highest relative humidity is February (81%).
The months with the lowest relative humidity are July, August and November (75%).
Average rainfall in December
Sydnor Addition, WV
- Average rainfall in December: 2.91"
The wettest months (with the highest rainfall) are February and May (3.27").
The driest month (with the least rainfall) is September (1.46").
Average rainfall days in December
Sydnor Addition, WV
- Average rainfall days in December: 11 days
The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is November (10.1 days).
Average snowfall in December
Sydnor Addition, WV
- Average snowfall in December: 3.9"
The month with the highest snowfall is February (4.09").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Sydnor Addition, WV
- Average snowfall days in December: 6 days
The month with the highest number of snowfall days is January (9.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Sydnor Addition, WV
- Average daylight in December: 9h and 36min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in December: 4h and 30min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in December
Sydnor Addition, WV
- Average sunshine days in December: 15.5 days
The month with the most sunshine days is October (17.7 days).
The month with the least sunshine days is May (10.5 days).
Average UV index in December
Sydnor Addition, WV
- Average UV index in December: 2
The months with the highest UV index are June 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
Sydnor Addition, WV
- Average cloud cover in December: 54
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in December
Sydnor Addition, WV
- 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).
