December weather forecastGlenn Echo, NC
December
Weather in December
December, the first month of the winter in Glenn Echo, is still a cool month, with an average temperature varying between 36.1°F (2.3°C) and 50.5°F (10.3°C).Temperature
The transition to December results in a modest reduction in average high-temperature, moving from a mild 57.4°F (14.1°C) in November to a cool 50.5°F (10.3°C). During December, Glenn Echo records an average temperature of 36.1°F (2.3°C) at night.Humidity
The months with the highest humidity are May and December, with an average relative humidity of 76%.Rainfall
In Glenn Echo, during December, the rain falls for 11.1 days and regularly aggregates up to 3.27" (83mm) of precipitation. In Glenn Echo, during the entire year, the rain falls for 160.9 days and collects up to 32.76" (832mm) of precipitation.Snowfall
Months with snowfall are January through March, November and December. The month with the most snowfall is December, when snow falls for 1.1 days and typically aggregates up to 2.2" (56mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 48min of daylight.On the first day of December, sunrise is at 7:15 am and sunset at 5:09 pm. On the last day of the month, sunrise is at 7:33 am and sunset at 5:20 pm EST.
Sunshine
With an average of 5.4h of sunshine, December has the least sunshine of the year.UV index
The months with the lowest UV index in Glenn Echo are January, February and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for the average person.Note: A maximum UV index of 2 in December translates into the following recommendations:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Glenn Echo, NC
- Average high temperature in December: 50.5°F
The warmest month (with the highest average high temperature) is July (89.2°F).
The month with the lowest average high temperature is January (46.4°F).
- Average low temperature in December: 36.1°F
The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (30.9°F).
Average pressure in December
Glenn Echo, NC
- 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
Glenn Echo, NC
- Average wind speed in December: 5.6mph
The windiest month (with the highest average wind speed) is April (7mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).
Average humidity in December
Glenn Echo, NC
- Average humidity in December: 76%
The months with the highest relative humidity are May and December (76%).
The month with the lowest relative humidity is July (70%).
Average rainfall in December
Glenn Echo, NC
- Average rainfall in December: 3.27"
The wettest month (with the highest rainfall) is April (3.58").
The driest month (with the least rainfall) is October (2.01").
Average rainfall days in December
Glenn Echo, NC
- Average rainfall days in December: 11.1 days
The month with the highest number of rainy days is July (17.6 days).
The month with the least rainy days is November (9.5 days).
Average snowfall in December
Glenn Echo, NC
- Average snowfall in December: 2.2"
The month with the highest snowfall is December (2.2").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Glenn Echo, NC
- Average snowfall days in December: 1.1 days
The month with the highest number of snowfall days is February (2.8 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Glenn Echo, NC
- Average daylight in December: 9h and 48min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in December: 5h and 24min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in December
Glenn Echo, NC
- Average sunshine days in December: 18.1 days
The month with the most sunshine days is November (19.8 days).
The month with the least sunshine days is July (10.9 days).
Average UV index in December
Glenn Echo, NC
- 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
Glenn Echo, NC
- Average cloud cover in December: 41
The months with the most cloud cover are February and March (Cloud cover 42).
The months with the least cloud cover are June and July (Cloud cover 29).
Average visibility in December
Glenn Echo, NC
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
