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 involves a decrease in the average high-temperature, falling from a wintry 39.7°F (4.3°C) in November to a freezing cold 29.3°F (-1.5°C). Blue Mountain Lake experiences an average nighttime temperature of 19.6°F (-6.9°C) in the month of December.Humidity
In December, the average relative humidity in Blue Mountain Lake is 85%.Rainfall
In Blue Mountain Lake, during December, the rain falls for 10.2 days and regularly aggregates up to 1.3" (33mm) of precipitation. Throughout the year, there are 151.8 rainfall days, and 18.19" (462mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In December, it is snowing for 15.5 days. Throughout December, 4.53" (115mm) of snow is accumulated. In Blue Mountain Lake, during the entire year, snow falls for 80.1 days and aggregates up to 22.99" (584mm) of snow.Daylight
December has the shortest days of the year in Blue Mountain Lake, with an average of 9h and 0min of daylight.On the first day of the month, sunrise is at 7:12 am and sunset at 4:21 pm. On the last day of December, sunrise is at 7:31 am and sunset at 4:30 pm EST.
Sunshine
The average sunshine in December in Blue Mountain Lake, New York, is 3.3h.UV index
The months with the lowest UV index are January through March and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for average individuals.Note: The UV index of 1 during December translates into the following guidance:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Employ a wide-brim hat for potent defense against up to 50% of UV rays. 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
How cold is December in Blue Mountain Lake?
What is the average humidity in December in Blue Mountain Lake?
How many days does it rain in December in Blue Mountain Lake?
How many days does it snow in December in Blue Mountain Lake?
What is the month with the shortest days in Blue Mountain Lake?
What is the average length of the day in December in Blue Mountain Lake?
What time are sunrise and sunset in December in Blue Mountain Lake?
How many hours of sunshine does Blue Mountain Lake have in December?
What is the month with the lowest UV index in Blue Mountain Lake?
What is the UV index intensity in December in Blue Mountain Lake?
Average temperature in December
Blue Mountain Lake, NY
- Average high temperature in December: 29.3°F
The warmest month (with the highest average high temperature) is July (76.3°F).
The month with the lowest average high temperature is January (23.7°F).
- Average low temperature in December: 19.6°F
The month with the highest average low temperature is July (55.2°F).
The coldest month (with the lowest average low temperature) is January (11.5°F).
Average pressure in December
Blue Mountain Lake, NY
- Average pressure in December: 30.05"Hg
The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Blue Mountain Lake, NY
- Average wind speed in December: 6.8mph
The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest months (with the lowest average wind speed) are August and September (5.5mph).
Average humidity in December
Blue Mountain Lake, NY
- Average humidity in December: 85%
The month with the highest relative humidity is February (89%).
The month with the lowest relative humidity is May (77%).
Average rainfall in December
Blue Mountain Lake, NY
- Average rainfall in December: 1.3"
The wettest month (with the highest rainfall) is June (2.17").
The driest month (with the least rainfall) is January (1.06").
Average rainfall days in December
Blue Mountain Lake, NY
- Average rainfall days in December: 10.2 days
The month with the highest number of rainy days is May (16.7 days).
The month with the least rainy days is January (8.1 days).
Average snowfall in December
Blue Mountain Lake, NY
- Average snowfall in December: 4.53"
The months with the highest snowfall are January and February (4.88").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Blue Mountain Lake, NY
- Average snowfall days in December: 15.5 days
The month with the highest number of snowfall days is January (18.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Blue Mountain Lake, NY
- Average daylight in December: 9h and 0min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in December: 3h and 2min
The month with the most sunshine is July (Average sunshine: 9h and 42min).
The month with the least sunshine is February (Average sunshine: 2h and 54min).
Average sunshine days in December
Blue Mountain Lake, NY
- Average sunshine days in December: 11.5 days
The month with the most sunshine days is September (16.6 days).
The month with the least sunshine days is February (9.4 days).
Average UV index in December
Blue Mountain Lake, NY
- Average UV index in December: 1
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March and December (UV index 1).
Average cloud cover in December
Blue Mountain Lake, NY
- Average cloud cover in December: 67
The month with the most cloud cover is February (Cloud cover 70).
The month with the least cloud cover is July (Cloud cover 41).
Average visibility in December
Blue Mountain Lake, NY
- Average visibility in December: 5mi
The months with the highest visibility are April, May, June, July, October, November and December (5mi).
The months with the lowest visibility are January, February, March, August and September (4mi).
Blue Mountain Lake, New York, USA
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