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
With the arrival of December, Rosemary Hills experiences a modest decline in average high-temperatures, transitioning from a cool 53.6°F (12°C) in November to a chilly 45.3°F (7.4°C). Rosemary Hills's nighttime temperature in December drops to an average of 33.3°F (0.7°C).Humidity
The months with the highest humidity are May, October and December, with an average relative humidity of 75%.Rainfall
In Rosemary Hills, in December, it is raining for 10.4 days, with typically 2.44" (62mm) of accumulated precipitation. In Rosemary Hills, Maryland, during the entire year, the rain falls for 154.8 days and collects up to 30.28" (769mm) of precipitation.Snowfall
Months with snowfall in Rosemary Hills are January through April, November and December. In Rosemary Hills, in December, snow falls for 2.5 days, with typically accumulated 1.34" (34mm) of snow. In Rosemary Hills, Maryland, during the entire year, snow falls for 15 days and aggregates up to 9.17" (233mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 30min of daylight.On the first day of December in Rosemary Hills, 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 4:56 pm EST.
Sunshine
In Rosemary Hills, the average sunshine in December is 5h.UV index
January, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: In December, the UV index of 2 transforms into the following advice:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Frequently asked questions
What is the temperature in December in Rosemary Hills?
What is the most humid month in Rosemary Hills?
What is the average humidity in December in Rosemary Hills?
How much does it rain in Rosemary Hills in December?
How much does it snow in Rosemary Hills in December?
What is the month with the shortest days in Rosemary Hills?
What is the average length of the day in December in Rosemary Hills?
When are sunrise and sunset in December in Rosemary Hills?
How many hours of sunshine does Rosemary Hills have in December?
When is the lowest UV index in Rosemary Hills?
What is the UV index intensity in December in Rosemary Hills?
Average temperature in December
Rosemary Hills, 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
Rosemary Hills, 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
Rosemary Hills, 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
Rosemary Hills, 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
Rosemary Hills, 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
Rosemary Hills, 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
Rosemary Hills, 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
Rosemary Hills, 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
Rosemary Hills, 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
Rosemary Hills, 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
Rosemary Hills, 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
Rosemary Hills, 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
Rosemary Hills, 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).
Rosemary Hills, Maryland, USA
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