December weather forecastRock Oak, WV
December
Weather in December
The first month of the winter, December, is also an icy month in Rock Oak, West Virginia, with an average temperature ranging between min 29.1°F (-1.6°C) and max 41.5°F (5.3°C).Temperature
Rock Oak's average high-temperature decreases in December, falling from a fresh 50.9°F (10.5°C) in November to a wintry 41.5°F (5.3°C). Throughout the nights in December, Rock Oak experiences an average low-temperature of 29.1°F (-1.6°C).Humidity
The average relative humidity in December is 78%.Rainfall
In December, the rain falls for 11.5 days. Throughout December, 2.2" (56mm) of precipitation is accumulated. Throughout the year, there are 166 rainfall days, and 25.83" (656mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Rock Oak, in December, during 5.9 snowfall days, 2.24" (57mm) of snow is typically accumulated. In Rock Oak, during the entire year, snow falls for 31.2 days and aggregates up to 16.5" (419mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 30min of daylight.On the first day of December, sunrise is at 7:15 am and sunset at 4:52 pm. On the last day of the month, sunrise is at 7:34 am and sunset at 5:02 pm EST.
Sunshine
January and December, with an average of 5.1h of sunshine, are months with the least sunshine.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Rock Oak, West Virginia. A UV Index reading of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: The UV index of 2 in December translates into these instructions:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Rock Oak, WV
- Average high temperature in December: 41.5°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (36.1°F).
- Average low temperature in December: 29.1°F
The month with the highest average low temperature is July (60.6°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).
Average pressure in December
Rock Oak, 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
Rock Oak, WV
- Average wind speed in December: 6.2mph
The windiest month (with the highest average wind speed) is February (7.1mph).
The calmest month (with the lowest average wind speed) is August (4mph).
Average humidity in December
Rock Oak, WV
- Average humidity in December: 78%
The month with the highest relative humidity is October (79%).
The months with the lowest relative humidity are April and July (74%).
Average rainfall in December
Rock Oak, WV
- Average rainfall in December: 2.2"
The wettest month (with the highest rainfall) is May (3.11").
The driest months (with the least rainfall) are February and November (1.73").
Average rainfall days in December
Rock Oak, WV
- Average rainfall days in December: 11.5 days
The month with the highest number of rainy days is May (18.4 days).
The month with the least rainy days is November (9.1 days).
Average snowfall in December
Rock Oak, WV
- Average snowfall in December: 2.24"
The month with the highest snowfall is March (4.21").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Rock Oak, WV
- Average snowfall days in December: 5.9 days
The month with the highest number of snowfall days is January (9.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Rock Oak, WV
- Average daylight in December: 9h and 30min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 5h and 6min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The months with the least sunshine are January and December (Average sunshine: 5h and 6min).
Average sunshine days in December
Rock Oak, WV
- Average sunshine days in December: 15.3 days
The month with the most sunshine days is November (18.3 days).
The month with the least sunshine days is May (10.1 days).
Average UV index in December
Rock Oak, WV
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in December
Rock Oak, WV
- Average cloud cover in December: 46
The month with the most cloud cover is January (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in December
Rock Oak, WV
- Average visibility in December: 6mi
The months with the highest visibility are April, June, July, November and December (6mi).
The months with the lowest visibility are January, February, March, May, August, September and October (5mi).
