December weather forecastTriadelphia, WV
December
Weather in December
December, the first month of the winter in Triadelphia, is also a wintry month, with temperature in the range of an average low of 28°F (-2.2°C) and an average high of 39.9°F (4.4°C).Temperature
With the onset of December, Triadelphia experiences a modest temperature adjustment, with the average high-temperature receding from a frosty 49.3°F (9.6°C) in November to an icy 39.9°F (4.4°C). Triadelphia's temperature drops to an average low of 28°F (-2.2°C) during the nights of December.Humidity
The average relative humidity in December in Triadelphia is 83%.Rainfall
In Triadelphia, in December, it is raining for 11.7 days, with typically 2.17" (55mm) of accumulated precipitation. Throughout the year, there are 166.3 rainfall days, and 25.94" (659mm) of precipitation is accumulated.Snowfall
Months with snowfall in Triadelphia, West Virginia, are January through April, November and December. In Triadelphia, West Virginia, during December, snow falls for 10.5 days and regularly aggregates up to 2.6" (66mm) of snow. In Triadelphia, during the entire year, snow falls for 50.4 days and aggregates up to 14.06" (357mm) of snow.Daylight
The month with the shortest days in Triadelphia is December, with an average of 9h and 24min of daylight.On the first day of December, sunrise is at 7:25 am and sunset at 4:57 pm. On the last day of the month, sunrise is at 7:44 am and sunset at 5:07 pm EST.
Sunshine
The average sunshine in December in Triadelphia is 3.5h.UV index
December is the month with the lowest UV index, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for the ordinary person.Note: In December, the maximum UV index of 1 suggests this advice:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Triadelphia, WV
- Average high temperature in December: 39.9°F
The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (33.6°F).
- Average low temperature in December: 28°F
The month with the highest average low temperature is July (61.7°F).
The coldest month (with the lowest average low temperature) is January (20.8°F).
Average pressure in December
Triadelphia, WV
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in December
Triadelphia, WV
- Average wind speed in December: 7.1mph
The windiest month (with the highest average wind speed) is January (7.8mph).
The calmest months (with the lowest average wind speed) are July and August (4.6mph).
Average humidity in December
Triadelphia, WV
- Average humidity in December: 83%
The months with the highest relative humidity are January and February (84%).
The months with the lowest relative humidity are April and August (77%).
Average rainfall in December
Triadelphia, WV
- Average rainfall in December: 2.17"
The wettest month (with the highest rainfall) is May (2.68").
The driest month (with the least rainfall) is November (1.69").
Average rainfall days in December
Triadelphia, WV
- Average rainfall days in December: 11.7 days
The month with the highest number of rainy days is May (19.6 days).
The month with the least rainy days is January (9.4 days).
Average snowfall in December
Triadelphia, WV
- Average snowfall in December: 2.6"
The month with the highest snowfall is January (3.66").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Triadelphia, WV
- Average snowfall days in December: 10.5 days
The month with the highest number of snowfall days is January (14.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Triadelphia, WV
- Average daylight in December: 9h and 24min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in December: 3h and 30min
The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in December
Triadelphia, WV
- Average sunshine days in December: 11.7 days
The month with the most sunshine days is November (17.4 days).
The month with the least sunshine days is February (9.4 days).
Average UV index in December
Triadelphia, WV
- Average UV index in December: 1
The months with the highest UV index are May, June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Triadelphia, WV
- Average cloud cover in December: 63
The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in December
Triadelphia, 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 and February (4mi).
