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
Effna's December weather features a light decline in high-temperatures, reducing from a fresh 51.6°F (10.9°C) in November to a frosty 43.7°F (6.5°C). Effna experiences a consistent average temperature of 30°F (-1.1°C) throughout the nights in December.Humidity
In Effna, the average relative humidity in December is 81%.Rainfall
In Effna, in December, it is raining for 11.4 days, with typically 2.4" (61mm) of accumulated precipitation. In Effna, during the entire year, the rain falls for 180.1 days and collects up to 28.86" (733mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. December is the month with the most snowfall. Snow falls for 9.5 days and accumulates 6.3" (160mm) of snow.Daylight
December has the shortest days of the year in Effna, with an average of 9h and 42min of daylight.On the first day of December, sunrise is at 7:20 am and sunset at 5:08 pm. On the last day of the month, sunrise is at 7:38 am and sunset at 5:18 pm EST.
Sunshine
In December, the average sunshine is 5h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Effna. A UV Index value of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A daily maximum UV index of 2 in December translates into the following instructions:
Sun exposure does not present considerable issues for many, yet infants, fair-skinned people, and children necessitate constant protection. To protect against the Sun's most potent rays, avoid direct exposure around midday. Stay sun-safe with clothing that is both closely woven and worn loosely. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Effna in December?
What is the average humidity in December in Effna?
How much does it rain in Effna in December?
What is the snowiest month in Effna?
How many days does it snow in December in Effna?
What is the month with the shortest days in Effna?
How many hours of daylight does Effna have in December?
When is the sunrise / sunset in December in Effna?
How long on average sun shines in December in Effna?
When is the lowest UV index in Effna?
What is the UV index reading in December in Effna?
Average temperature in December
Effna, VA
- Average high temperature in December: 43.7°F
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (38.3°F).
- Average low temperature in December: 30°F
The month with the highest average low temperature is July (59.5°F).
The coldest month (with the lowest average low temperature) is January (23.9°F).
Average pressure in December
Effna, VA
- 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 (29.99"Hg).
Average wind speed in December
Effna, VA
- Average wind speed in December: 7.2mph
The windiest months (with the highest average wind speed) are January and February (8mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in December
Effna, VA
- Average humidity in December: 81%
The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is July (76%).
Average rainfall in December
Effna, VA
- Average rainfall in December: 2.4"
The wettest month (with the highest rainfall) is May (3.31").
The driest month (with the least rainfall) is September (1.54").
Average rainfall days in December
Effna, VA
- Average rainfall days in December: 11.4 days
The month with the highest number of rainy days is May (21.2 days).
The month with the least rainy days is January (10 days).
Average snowfall in December
Effna, VA
- Average snowfall in December: 6.3"
The month with the highest snowfall is December (6.3").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Effna, VA
- Average snowfall days in December: 9.5 days
The month with the highest number of snowfall days is January (12.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Effna, VA
- Average daylight in December: 9h and 4min
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 42min).
- Average sunshine in December: 5h and 0min
The months with the most sunshine are June and July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).
Average sunshine days in December
Effna, VA
- Average sunshine days in December: 13.9 days
The month with the most sunshine days is November (16.5 days).
The month with the least sunshine days is May (7.1 days).
Average UV index in December
Effna, VA
- Average UV index in December: 2
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Effna, VA
- Average cloud cover in December: 53
The months with the most cloud cover are January and February (Cloud cover 57).
The months with the least cloud cover are June, July and August (Cloud cover 38).
Average visibility in December
Effna, VA
- Average visibility in December: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, August, October, November and December (5mi).
The month with the lowest visibility is September (4mi).
Effna, Virginia, USA
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