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 onset of December brings a small shift in high-temperatures, falling from a fresh 54.5°F (12.5°C) in November to a chilly 45.7°F (7.6°C). In Rosaryville, an average low-temperature of 34.7°F (1.5°C) is recorded during December nights.Humidity
In December, the average relative humidity in Rosaryville, Maryland, is 76%.Rainfall
In December, the rain falls for 11.1 days. Throughout December, 2.68" (68mm) of precipitation is accumulated. In Rosaryville, during the entire year, the rain falls for 164.8 days and collects up to 32.87" (835mm) of precipitation.Snowfall
January through April, November and December are months with snowfall in Rosaryville. In Rosaryville, during December, snow falls for 2.5 days and regularly aggregates up to 1.06" (27mm) of snow. Throughout the year, there are 15.1 snowfall days, and 8.5" (216mm) 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 in Rosaryville, sunrise is at 7:07 am and sunset at 4:46 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 4:55 pm EST.
Sunshine
The average sunshine in December in Rosaryville is 5.2h.UV index
The months with the lowest UV index are January, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for average individuals.Note: In December, a regular UV index of 2 translates into these guidelines:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. To protect against the Sun's most potent rays, avoid direct exposure around midday. Boost your sun resistance with garments that are densely woven yet spacious. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Frequently asked questions
What is the average December temperature in Rosaryville?
What is the average humidity in December in Rosaryville?
How much does it rain in Rosaryville in December?
How much does it snow in Rosaryville in December?
What is the month with the shortest days in Rosaryville?
What is the average length of the day in December in Rosaryville?
When is the sunrise / sunset in December in Rosaryville?
How many hours of sunshine does Rosaryville have in December?
What is the month with the lowest UV index in Rosaryville?
How high is the UV index in December in Rosaryville?
Average temperature in December
Rosaryville, MD
- Average high temperature in December: 45.7°F
The warmest month (with the highest average high temperature) is July (86.7°F).
The month with the lowest average high temperature is January (40.1°F).
- Average low temperature in December: 34.7°F
The month with the highest average low temperature is July (69.8°F).
The coldest month (with the lowest average low temperature) is January (28.2°F).
Average pressure in December
Rosaryville, 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 (29.94"Hg).
Average wind speed in December
Rosaryville, MD
- Average wind speed in December: 7.6mph
The windiest month (with the highest average wind speed) is March (8.5mph).
The calmest months (with the lowest average wind speed) are July and August (5.4mph).
Average humidity in December
Rosaryville, MD
- Average humidity in December: 76%
The month with the highest relative humidity is May (77%).
The months with the lowest relative humidity are January, March and April (72%).
Average rainfall in December
Rosaryville, MD
- Average rainfall in December: 2.68"
The wettest month (with the highest rainfall) is August (3.94").
The driest month (with the least rainfall) is January (2.05").
Average rainfall days in December
Rosaryville, MD
- Average rainfall days in December: 11.1 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is November (8.8 days).
Average snowfall in December
Rosaryville, MD
- Average snowfall in December: 1.06"
The month with the highest snowfall is January (2.76").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Rosaryville, 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
Rosaryville, MD
- Average daylight in December: 9h and 3min
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: 5h and 1min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is February (Average sunshine: 5h and 6min).
Average sunshine days in December
Rosaryville, MD
- Average sunshine days in December: 16.7 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is July (10.8 days).
Average UV index in December
Rosaryville, 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
Rosaryville, MD
- Average cloud cover in December: 44
The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 29).
Average visibility in December
Rosaryville, MD
- 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).
Rosaryville, Maryland, USA
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