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
Mount Hermon Heights's weather subtly changes with the onset of December, barely falling from a refreshing 56.5°F (13.6°C) in November to a chilly 48.7°F (9.3°C). An average low-temperature of 34.7°F (1.5°C) is observed in Mount Hermon Heights during the December nights.Humidity
December is the most humid month, with an average relative humidity of 78%.Rainfall
In Mount Hermon Heights, Virginia, in December, it is raining for 10.5 days, with typically 2.01" (51mm) of accumulated precipitation. In Mount Hermon Heights, during the entire year, the rain falls for 152.8 days and collects up to 27.09" (688mm) of precipitation.Snowfall
Months with snowfall are January through April, November and December. In Mount Hermon Heights, during December, snow falls for 1.6 days and regularly aggregates up to 1.38" (35mm) of snow. In Mount Hermon Heights, during the entire year, snow falls for 11.7 days and aggregates up to 7.01" (178mm) of snow.Daylight
With an average of 9h and 36min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:06 am and sunset at 4:51 pm. On the last day of December, sunrise is at 7:24 am and sunset at 5:01 pm EST.
Sunshine
December has the least sunshine of the year in Mount Hermon Heights, with an average of 5.2h of sunshine.UV index
The months with the lowest UV index in Mount Hermon Heights are January, February and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The UV index of 2 in December translates into these instructions:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Frequently asked questions
What are December temperatures in Mount Hermon Heights?
What is the most humid month in Mount Hermon Heights?
What is the average humidity in December in Mount Hermon Heights?
How much does it rain in Mount Hermon Heights in December?
How much does it snow in Mount Hermon Heights in December?
What is the month with the shortest days in Mount Hermon Heights?
How many hours of daylight does Mount Hermon Heights have in December?
What time are sunrise and sunset in December in Mount Hermon Heights?
What is the month with the least sunshine in Mount Hermon Heights?
How long on average sun shines in December in Mount Hermon Heights?
What are the months with the lowest UV index in Mount Hermon Heights?
What is the UV index intensity in December in Mount Hermon Heights?
Average temperature in December
Mount Hermon Heights, VA
- Average high temperature in December: 48.7°F
The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is January (43.9°F).
- Average low temperature in December: 34.7°F
The month with the highest average low temperature is July (69.3°F).
The coldest month (with the lowest average low temperature) is January (28.9°F).
Average pressure in December
Mount Hermon Heights, VA
- Average pressure in December: 30.12"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
Mount Hermon Heights, VA
- Average wind speed in December: 5.8mph
The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in December
Mount Hermon Heights, VA
- Average humidity in December: 78%
The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is July (69%).
Average rainfall in December
Mount Hermon Heights, VA
- Average rainfall in December: 2.01"
The wettest month (with the highest rainfall) is August (2.83").
The driest month (with the least rainfall) is September (1.69").
Average rainfall days in December
Mount Hermon Heights, VA
- Average rainfall days in December: 10.5 days
The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is November (9.2 days).
Average snowfall in December
Mount Hermon Heights, VA
- Average snowfall in December: 1.38"
The month with the highest snowfall is February (1.93").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Mount Hermon Heights, VA
- Average snowfall days in December: 1.6 days
The months with the highest number of snowfall days are January and February (3.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Mount Hermon Heights, 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 36min).
- Average sunshine in December: 5h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 12min).
Average sunshine days in December
Mount Hermon Heights, VA
- Average sunshine days in December: 18.2 days
The month with the most sunshine days is November (19.3 days).
The month with the least sunshine days is May (11.7 days).
Average UV index in December
Mount Hermon Heights, VA
- Average UV index in December: 2
The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in December
Mount Hermon Heights, VA
- Average cloud cover in December: 44
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in December
Mount Hermon Heights, VA
- Average visibility in December: 5mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October and November (6mi).
The months with the lowest visibility are May and December (5mi).
Mount Hermon Heights, Virginia, USA
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