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 comes with a drop in the average high-temperature, falling from November's fresh 52.9°F (11.6°C) to a chilly 43.9°F (6.6°C). Throughout December, Ryan's nights cool down to an average of 32.2°F (0.1°C).Humidity
The average relative humidity in December is 81%.Rainfall
In Ryan, in December, it is raining for 12.7 days, with typically 2.68" (68mm) of accumulated precipitation. In Ryan, during the entire year, the rain falls for 169.9 days and collects up to 31.54" (801mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Ryan, during December, snow falls for 6.9 days and regularly aggregates up to 2.52" (64mm) of snow. Throughout the year, there are 34.5 snowfall days, and 12.76" (324mm) of snow is accumulated.Daylight
The month with the shortest days in Ryan is December, with an average of 9h and 30min of daylight.On the first day of the month, sunrise is at 7:25 am and sunset at 5:04 pm. On the last day of December, sunrise is at 7:43 am and sunset at 5:14 pm EST.
Sunshine
In Ryan, the average sunshine in December is 4h.UV index
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for average individuals.Note: In December, the maximum UV index of 2 transforms into these recommendations:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it cold during December?
What is the average humidity in December?
How much does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Ryan have in December?
What time are sunrise and sunset in December?
How many hours of sunshine does Ryan have in December?
What are the months with the lowest UV index?
How high is the UV index in December?
Average temperature in December
Ryan, WV
- Average high temperature in December: 43.9°F
The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is January (38.7°F).
- Average low temperature in December: 32.2°F
The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (25°F).
Average pressure in December
Ryan, 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 (29.97"Hg).
Average wind speed in December
Ryan, WV
- Average wind speed in December: 6.1mph
The windiest month (with the highest average wind speed) is February (6.6mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).
Average humidity in December
Ryan, WV
- Average humidity in December: 81%
The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is August (75%).
Average rainfall in December
Ryan, WV
- Average rainfall in December: 2.68"
The wettest month (with the highest rainfall) is May (3.98").
The driest month (with the least rainfall) is September (1.61").
Average rainfall days in December
Ryan, WV
- Average rainfall days in December: 12.7 days
The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is November (10.6 days).
Average snowfall in December
Ryan, WV
- Average snowfall in December: 2.52"
The month with the highest snowfall is January (3.46").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Ryan, WV
- Average snowfall days in December: 6.9 days
The month with the highest number of snowfall days is January (11.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Ryan, WV
- Average daylight in December: 9h and 3min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 4h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in December
Ryan, WV
- Average sunshine days in December: 12.8 days
The month with the most sunshine days is October (17.9 days).
The months with the least sunshine days are February and May (10.2 days).
Average UV index in December
Ryan, WV
- 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
Ryan, WV
- Average cloud cover in December: 59
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in December
Ryan, 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).
Ryan, West Virginia, USA
Weather forecast for your location
2. Allow the app to use your location