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 arrival of December is marked by a minor reduction in average high-temperature, sliding from a frosty 46.9°F (8.3°C) in November to a wintry 38.3°F (3.5°C). In Mountain Lake Park, the average temperature during the nights of December drops to a freezing cold 26.8°F (-2.9°C).Humidity
In December, the average relative humidity is 84%.Rainfall
In Mountain Lake Park, during December, the rain falls for 12.3 days and regularly aggregates up to 3.11" (79mm) of precipitation. In Mountain Lake Park, during the entire year, the rain falls for 185.9 days and collects up to 35.16" (893mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Mountain Lake Park. In Mountain Lake Park, in December, during 13 snowfall days, 6.22" (158mm) of snow is typically accumulated. In Mountain Lake Park, during the entire year, snow falls for 64.2 days and aggregates up to 35.2" (894mm) of snow.Daylight
December has the shortest days of the year in Mountain Lake Park, with an average of 9h and 24min of daylight.On the first day of December, sunrise is at 7:19 am and sunset at 4:54 pm. On the last day of the month, sunrise is at 7:37 am and sunset at 5:04 pm EST.
Sunshine
In December, the average sunshine in Mountain Lake Park is 3.8h.UV index
The month with the lowest UV index is December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for the ordinary person.Note: In December, the maximum UV index of 1 transforms into these recommendations:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Frequently asked questions
Is it cold in Mountain Lake Park during December?
What is the average humidity in December in Mountain Lake Park?
How much does it rain in Mountain Lake Park in December?
How many days does it snow in December in Mountain Lake Park?
What is the month with the shortest days in Mountain Lake Park?
What is the average length of the day in December in Mountain Lake Park?
What time are sunrise and sunset in December in Mountain Lake Park?
How long on average sun shines in December in Mountain Lake Park?
What is the month with the lowest UV index in Mountain Lake Park?
What is the UV index intensity in December in Mountain Lake Park?
Average temperature in December
Mountain Lake Park, MD
- Average high temperature in December: 38.3°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (32.5°F).
- Average low temperature in December: 26.8°F
The month with the highest average low temperature is July (58.5°F).
The coldest month (with the lowest average low temperature) is January (19.6°F).
Average pressure in December
Mountain Lake Park, MD
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in December
Mountain Lake Park, MD
- Average wind speed in December: 8.2mph
The windiest months (with the highest average wind speed) are January and February (8.9mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in December
Mountain Lake Park, MD
- Average humidity in December: 84%
The month with the highest relative humidity is February (86%).
The month with the lowest relative humidity is July (78%).
Average rainfall in December
Mountain Lake Park, MD
- Average rainfall in December: 3.11"
The wettest month (with the highest rainfall) is May (3.9").
The driest month (with the least rainfall) is November (2.24").
Average rainfall days in December
Mountain Lake Park, MD
- Average rainfall days in December: 12.3 days
The month with the highest number of rainy days is May (22.3 days).
The month with the least rainy days is February (9.3 days).
Average snowfall in December
Mountain Lake Park, MD
- Average snowfall in December: 6.22"
The month with the highest snowfall is February (7.6").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Mountain Lake Park, MD
- Average snowfall days in December: 13 days
The month with the highest number of snowfall days is January (15.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Mountain Lake Park, 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: 3h and 5min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in December
Mountain Lake Park, MD
- Average sunshine days in December: 11.2 days
The month with the most sunshine days is November (14.5 days).
The month with the least sunshine days is May (6.9 days).
Average UV index in December
Mountain Lake Park, MD
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Mountain Lake Park, MD
- Average cloud cover in December: 62
The month with the most cloud cover is January (Cloud cover 66).
The months with the least cloud cover are July and August (Cloud cover 40).
Average visibility in December
Mountain Lake Park, MD
- Average visibility in December: 5mi
The months with the highest visibility are March, April, May, June, July, August, October, November and December (5mi).
The months with the lowest visibility are January, February and September (4mi).
Mountain Lake Park, Maryland, USA
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