December weather forecastAntietam Manor, MD
December
Weather in December
December, the first month of the winter in Antietam Manor, is still a cold month, with an average temperature ranging between min 30.2°F (-1°C) and max 42.3°F (5.7°C).Temperature
Welcoming December, Antietam Manor observes a shift in the average high-temperature, falling from November's fresh 51.6°F (10.9°C) to a wintry 42.3°F (5.7°C). Nightly temperatures drop to an average low of 30.2°F (-1°C) in December.Humidity
The months with the highest humidity in Antietam Manor are May, October and December, with an average relative humidity of 79%.Rainfall
In Antietam Manor, in December, during 10.8 rainfall days, 2.2" (56mm) of precipitation is typically accumulated. In Antietam Manor, during the entire year, the rain falls for 162.4 days and collects up to 30.16" (766mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. In December, in Antietam Manor, it is snowing for 4.5 days. Throughout December, 2.09" (53mm) of snow is accumulated. In Antietam Manor, during the entire year, snow falls for 24.4 days and aggregates up to 14.29" (363mm) of snow.Daylight
With an average of 9h and 24min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:12 am and sunset at 4:47 pm. On the last day of December, sunrise is at 7:31 am and sunset at 4:57 pm EST.
Sunshine
The average sunshine in December is 4.8h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: The daily high UV index of 2 in December translates into this advice:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Always opt for UVA and UVB-resistant sunglasses on radiant days. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Antietam Manor, MD
- Average high temperature in December: 42.3°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (37°F).
- Average low temperature in December: 30.2°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).
Average pressure in December
Antietam Manor, MD
- Average pressure in December: 30.11"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
Antietam Manor, MD
- Average wind speed in December: 7mph
The windiest months (with the highest average wind speed) are January, February and March (7.6mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).
Average humidity in December
Antietam Manor, MD
- Average humidity in December: 79%
The months with the highest relative humidity are May, October and December (79%).
The month with the lowest relative humidity is July (74%).
Average rainfall in December
Antietam Manor, MD
- Average rainfall in December: 2.2"
The wettest month (with the highest rainfall) is July (3.27").
The driest month (with the least rainfall) is January (1.97").
Average rainfall days in December
Antietam Manor, MD
- Average rainfall days in December: 10.8 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is November (9.4 days).
Average snowfall in December
Antietam Manor, MD
- Average snowfall in December: 2.09"
The month with the highest snowfall is January (4.72").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Antietam Manor, MD
- Average snowfall days in December: 4.5 days
The month with the highest number of snowfall days is January (7.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Antietam Manor, MD
- Average daylight in December: 9h and 24min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in December: 4h and 48min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in December
Antietam Manor, MD
- Average sunshine days in December: 16.4 days
The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is April (11 days).
Average UV index in December
Antietam Manor, MD
- 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, November and December (UV index 2).
Average cloud cover in December
Antietam Manor, MD
- Average cloud cover in December: 49
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in December
Antietam Manor, MD
- Average visibility in December: 5mi
The months with the highest visibility are April, June, July, August and November (6mi).
The months with the lowest visibility are January, February, March, May, September, October and December (5mi).
