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
The shift from November to December corresponds with a decrease in the average high-temperature, down to a cold 42.3°F (5.7°C) from a fresh 51.6°F (10.9°C). Throughout December, an average low-temperature of 30.2°F (-1°C) is experienced.Humidity
The months with the highest humidity are May, October and December, with an average relative humidity of 79%.Rainfall
In December, the rain falls for 10.8 days. Throughout December, 2.2" (56mm) of precipitation is accumulated. In Antietam Overlook, during the entire year, the rain falls for 162.4 days and collects up to 30.16" (766mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. In December, it is snowing for 4.5 days. Throughout December, 2.09" (53mm) of snow is accumulated. In Antietam Overlook, during the entire year, snow falls for 24.4 days and aggregates up to 14.29" (363mm) of snow.Daylight
The month with the shortest days in Antietam Overlook is December, with an average of 9h and 24min of daylight.On the first day of December in Antietam Overlook, sunrise is at 7:12 am and sunset at 4:47 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 4:57 pm EST.
Sunshine
The average sunshine in December in Antietam Overlook is 4.8h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Antietam Overlook. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum daily UV index, 2 in December, converts into the following recommendations:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Frequently asked questions
Is it cold in Antietam Overlook during December?
What are the most humid months in Antietam Overlook?
What is the average humidity in December in Antietam Overlook?
How many days does it rain in December in Antietam Overlook?
How many days does it snow in December in Antietam Overlook?
What is the month with the shortest days in Antietam Overlook?
How many hours of daylight does Antietam Overlook have in December?
What time are sunrise and sunset in December in Antietam Overlook?
How long on average sun shines in December in Antietam Overlook?
When is the lowest UV index in Antietam Overlook?
How high is the UV index in December in Antietam Overlook?
Average temperature in December
Antietam Overlook, 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 Overlook, 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 Overlook, 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 Overlook, 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 Overlook, 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 Overlook, 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 Overlook, 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 Overlook, 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 Overlook, MD
- Average daylight in December: 9h and 2min
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 5min
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 Overlook, 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 Overlook, 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 Overlook, 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 Overlook, 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).
Antietam Overlook, Maryland, USA
Weather forecast for your location
2. Allow the app to use your location
