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
The average high-temperature shows a slight dip in December, from November's fresh 53.8°F (12.1°C) to a frosty 45°F (7.2°C). An average low-temperature of 32.9°F (0.5°C) is recorded in the month of December.Humidity
In December, the average relative humidity is 80%.Rainfall
In December, in Radnor, West Virginia, the rain falls for 12.6 days. Throughout December, 3.19" (81mm) of precipitation is accumulated. Throughout the year, in Radnor, there are 176.7 rainfall days, and 33.82" (859mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall. In December, in Radnor, West Virginia, it is snowing for 6.6 days. Throughout December, 2.56" (65mm) of snow is accumulated. In Radnor, during the entire year, snow falls for 33.2 days and aggregates up to 13.35" (339mm) of snow.Daylight
The month with the shortest days in Radnor is December, with an average of 9h and 36min of daylight.On the first day of December, sunrise is at 7:27 am and sunset at 5:10 pm. On the last day of the month, sunrise is at 7:45 am and sunset at 5:20 pm EST.
Sunshine
In Radnor, the average sunshine in December is 4.2h.UV index
The months with the lowest UV index in Radnor are January, February and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: A daily high UV index of 2 in December leads to these guidelines:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Always opt for UVA and UVB-resistant sunglasses on radiant days. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Frequently asked questions
What are December temperatures in Radnor?
What is the average humidity in December in Radnor?
How many days does it rain in December in Radnor?
How much does it snow in Radnor in December?
What is the month with the shortest days in Radnor?
How many hours of daylight does Radnor have in December?
What time are sunrise and sunset in December in Radnor?
How long on average sun shines in December in Radnor?
What is the month with the lowest UV index in Radnor?
How high is the UV index in December in Radnor?
Average temperature in December
Radnor, WV
- Average high temperature in December: 45°F
The warmest month (with the highest average high temperature) is July (87.1°F).
The month with the lowest average high temperature is January (39.7°F).
- Average low temperature in December: 32.9°F
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).
Average pressure in December
Radnor, 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
Radnor, WV
- Average wind speed in December: 6.2mph
The windiest months (with the highest average wind speed) are January, February and April (6.6mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in December
Radnor, WV
- Average humidity in December: 80%
The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is August (74%).
Average rainfall in December
Radnor, WV
- Average rainfall in December: 3.19"
The wettest month (with the highest rainfall) is April (3.43").
The driest month (with the least rainfall) is September (1.93").
Average rainfall days in December
Radnor, WV
- Average rainfall days in December: 12.6 days
The month with the highest number of rainy days is May (19.1 days).
The month with the least rainy days is November (10.6 days).
Average snowfall in December
Radnor, WV
- Average snowfall in December: 2.56"
The month with the highest snowfall is February (3.58").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Radnor, WV
- Average snowfall days in December: 6.6 days
The month with the highest number of snowfall days is January (9.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Radnor, WV
- Average daylight in December: 9h and 4min
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 36min).
- Average sunshine in December: 4h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in December
Radnor, WV
- Average sunshine days in December: 13.2 days
The month with the most sunshine days is November (17.1 days).
The month with the least sunshine days is May (9.7 days).
Average UV index in December
Radnor, 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
Radnor, WV
- Average cloud cover in December: 56
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
Radnor, WV
- Average visibility in December: 5mi
The months with the highest visibility are April, June, August, October and November (6mi).
The months with the lowest visibility are January, February, March, May, July, September and December (5mi).
Radnor, West Virginia, USA
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