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 transition into December is accompanied by a slight temperature decrease, with the average high-temperature shifting from a chilly 48.9°F (9.4°C) in November to a wintry 40.1°F (4.5°C). An average nighttime temperature of 27.5°F (-2.5°C) is observed during December.Humidity
In December, the average relative humidity is 81%.Rainfall
In Bloomington, in December, during 13.8 rainfall days, 2.91" (74mm) of precipitation is typically accumulated. In Bloomington, during the entire year, the rain falls for 184.1 days and collects up to 30.75" (781mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Bloomington, in December, during 9.1 snowfall days, 3.31" (84mm) of snow is typically accumulated. Throughout the year, in Bloomington, there are 45.5 snowfall days, and 20.67" (525mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 24min of daylight.On the first day of the month, sunrise is at 7:18 am and sunset at 4:53 pm. On the last day of December, sunrise is at 7:36 am and sunset at 5:02 pm EST.
Sunshine
In December, the average sunshine is 4.7h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Bloomington. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV rays for the ordinary person.Note: The UV index of 2 during December translates into the following guidance:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. Around midday, solar radiation is most harmful; hence, exposure should be limited. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold does it get in December?
What is the average humidity in December?
How many days does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When are sunrise and sunset in December in Bloomington?
How many hours of sunshine does Bloomington have in December?
What are the months with the lowest UV index?
How high is the UV index in December?
Average temperature in December
Bloomington, MD
- Average high temperature in December: 40.1°F
The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (34.2°F).
- Average low temperature in December: 27.5°F
The month with the highest average low temperature is July (59.4°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).
Average pressure in December
Bloomington, 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
Bloomington, MD
- Average wind speed in December: 7.5mph
The windiest month (with the highest average wind speed) is January (8.3mph).
The calmest month (with the lowest average wind speed) is August (4.4mph).
Average humidity in December
Bloomington, MD
- Average humidity in December: 81%
The month with the highest relative humidity is February (82%).
The months with the lowest relative humidity are April, June and July (76%).
Average rainfall in December
Bloomington, MD
- Average rainfall in December: 2.91"
The wettest month (with the highest rainfall) is May (3.31").
The driest month (with the least rainfall) is November (1.89").
Average rainfall days in December
Bloomington, MD
- Average rainfall days in December: 13.8 days
The month with the highest number of rainy days is May (19.8 days).
The month with the least rainy days is November (11.8 days).
Average snowfall in December
Bloomington, MD
- Average snowfall in December: 3.31"
The month with the highest snowfall is February (4.84").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Bloomington, MD
- Average snowfall days in December: 9.1 days
The month with the highest number of snowfall days is January (12.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Bloomington, 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 4min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in December
Bloomington, MD
- Average sunshine days in December: 11 days
The month with the most sunshine days is November (15 days).
The month with the least sunshine days is May (8.5 days).
Average UV index in December
Bloomington, MD
- Average UV index in December: 2
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in December
Bloomington, MD
- Average cloud cover in December: 52
The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is July (Cloud cover 35).
Average visibility in December
Bloomington, MD
- Average visibility in December: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, August, October, November and December (5mi).
The month with the lowest visibility is September (4mi).
Bloomington, Maryland, USA
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