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
December brings a slight decrease in temperature, down from a cool 53.6°F (12°C) in November to a chilly 45.3°F (7.4°C). During December, the nighttime temperature averages of 33.3°F (0.7°C).Humidity
May, October and December, with an average relative humidity of 75%, are the most humid months.Rainfall
In December, the rain falls for 10.4 days. Throughout December, 2.44" (62mm) of precipitation is accumulated. In Goodacre Knolls, during the entire year, the rain falls for 154.8 days and collects up to 30.28" (769mm) of precipitation.Snowfall
Months with snowfall are January through April, November and December. In Goodacre Knolls, during December, snow falls for 2.5 days and regularly aggregates up to 1.34" (34mm) of snow. Throughout the year, in Goodacre Knolls, there are 15 snowfall days, and 9.17" (233mm) of snow is accumulated.Daylight
With an average of 9h and 30min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:08 am and sunset at 4:46 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 4:55 pm EST.
Sunshine
In Goodacre Knolls, Maryland, the average sunshine in December is 5h.UV index
The months with the lowest UV index in Goodacre Knolls are January, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for average individuals.Note: The maximum UV index of 2 during December translates into these guidelines:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. To protect against the Sun's most potent rays, avoid direct exposure around midday. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Goodacre Knolls in December?
What is the most humid month?
What is the average humidity in December in Goodacre Knolls?
How much does it rain in December?
How much does it snow in December?
What is the month with the shortest days in Goodacre Knolls?
How many hours of daylight does Goodacre Knolls have in December?
When is the sunrise / sunset in December?
How long on average sun shines in December?
What is the month with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Goodacre Knolls, MD
- Average high temperature in December: 45.3°F
The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (39.7°F).
- Average low temperature in December: 33.3°F
The month with the highest average low temperature is July (69.6°F).
The coldest month (with the lowest average low temperature) is January (27.1°F).
Average pressure in December
Goodacre Knolls, 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
Goodacre Knolls, MD
- Average wind speed in December: 7.1mph
The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in December
Goodacre Knolls, MD
- Average humidity in December: 75%
The months with the highest relative humidity are May, October and December (75%).
The month with the lowest relative humidity is July (69%).
Average rainfall in December
Goodacre Knolls, MD
- Average rainfall in December: 2.44"
The wettest month (with the highest rainfall) is August (3.86").
The driest month (with the least rainfall) is January (1.89").
Average rainfall days in December
Goodacre Knolls, MD
- Average rainfall days in December: 10.4 days
The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is November (8.5 days).
Average snowfall in December
Goodacre Knolls, MD
- Average snowfall in December: 1.34"
The month with the highest snowfall is January (2.87").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Goodacre Knolls, MD
- Average snowfall days in December: 2.5 days
The month with the highest number of snowfall days is January (4.6 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
Goodacre Knolls, MD
- Average daylight in December: 9h and 3min
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 30min).
- Average sunshine in December: 5h and 0min
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 54min).
Average sunshine days in December
Goodacre Knolls, MD
- Average sunshine days in December: 17.7 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is May (12 days).
Average UV index in December
Goodacre Knolls, 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, November and December (UV index 2).
Average cloud cover in December
Goodacre Knolls, MD
- Average cloud cover in December: 46
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in December
Goodacre Knolls, MD
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
Goodacre Knolls, Maryland, USA
Weather forecast for your location
2. Allow the app to use your location