December weather forecastSyria, VA
December
Weather in December
December, the first month of the winter in Syria, is still a chilly month, with an average temperature varying between 29.5°F (-1.4°C) and 43.7°F (6.5°C).Temperature
The onset of December results in a small decrease in the average high-temperature, moderately receding from a cool 52°F (11.1°C) in November to a chilly 43.7°F (6.5°C). Syria experiences a mean temperature of 29.5°F (-1.4°C) during December nights.Humidity
In December, the average relative humidity in Syria, Virginia, is 78%.Rainfall
In Syria, Virginia, in December, it is raining for 7 days, with typically 0.75" (19mm) of accumulated precipitation. Throughout the year, there are 116.3 rainfall days, and 9.72" (247mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, November and December. In Syria, in December, during 2.4 snowfall days, 0.51" (13mm) of snow is typically accumulated. In Syria, during the entire year, snow falls for 15.9 days and aggregates up to 3.7" (94mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 30min of daylight.On the first day of December, sunrise is at 7:12 am and sunset at 4:52 pm. On the last day of the month, sunrise is at 7:30 am and sunset at 5:02 pm EST.
Sunshine
The month with the least sunshine is December, with an average of 4.9h of sunshine.UV index
The months with the lowest UV index in Syria are January, February, November 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 exposure to the Sun's UV rays for average individuals.Note: The maximum daily UV index of 2 in December converts into the following recommendations:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Syria, VA
- Average high temperature in December: 43.7°F
The warmest month (with the highest average high temperature) is July (85.1°F).
The month with the lowest average high temperature is January (38.8°F).
- Average low temperature in December: 29.5°F
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (23.7°F).
Average pressure in December
Syria, 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 (29.96"Hg).
Average wind speed in December
Syria, VA
- Average wind speed in December: 5.7mph
The windiest month (with the highest average wind speed) is February (6.7mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).
Average humidity in December
Syria, VA
- Average humidity in December: 78%
The months with the highest relative humidity are September and October (79%).
The month with the lowest relative humidity is July (74%).
Average rainfall in December
Syria, VA
- Average rainfall in December: 0.75"
The wettest month (with the highest rainfall) is August (1.18").
The driest month (with the least rainfall) is January (0.51").
Average rainfall days in December
Syria, VA
- Average rainfall days in December: 7 days
The month with the highest number of rainy days is May (13.1 days).
The month with the least rainy days is January (6.3 days).
Average snowfall in December
Syria, VA
- Average snowfall in December: 0.51"
The month with the highest snowfall is March (0.91").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Syria, VA
- Average snowfall days in December: 2.4 days
The month with the highest number of snowfall days is February (4.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Syria, VA
- Average daylight in December: 9h and 30min
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 54min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).
Average sunshine days in December
Syria, VA
- Average sunshine days in December: 21.4 days
The month with the most sunshine days is November (21.8 days).
The month with the least sunshine days is May (14.4 days).
Average UV index in December
Syria, VA
- Average UV index in December: 2
The months with the highest UV index are May, June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Syria, VA
- Average cloud cover in December: 47
The month with the most cloud cover is March (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility in December
Syria, VA
- Average visibility in December: 5mi
The months with the highest visibility are February, July and November (6mi).
The months with the lowest visibility are January, March, April, May, June, August, September, October and December (5mi).
