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
December's arrival coincides with a drop in the average high-temperature, decreasing from November's wintry 40.8°F (4.9°C) to a subzero cold 29.3°F (-1.5°C). During December, an average low-temperature of 19°F (-7.2°C) is observed in Lyon Mountain, New York.Humidity
In December, the average relative humidity in Lyon Mountain is 86%.Rainfall
In Lyon Mountain, New York, in December, during 11.3 rainfall days, 2.56" (65mm) of precipitation is typically accumulated. In Lyon Mountain, New York, during the entire year, the rain falls for 173.7 days and collects up to 32.76" (832mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Lyon Mountain, during December, snow falls for 19.5 days and regularly aggregates up to 9.53" (242mm) of snow. In Lyon Mountain, during the entire year, snow falls for 102.8 days and aggregates up to 62.6" (1590mm) of snow.Daylight
December has the shortest days of the year in Lyon Mountain, New York, with an average of 8h and 54min of daylight.On the first day of the month, sunrise is at 7:13 am and sunset at 4:16 pm. On the last day of December, sunrise is at 7:32 am and sunset at 4:25 pm EST.
Sunshine
In December, the average sunshine is 3.7h.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index in Lyon Mountain. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for the average person.Note: A daily high UV index of 1 in December leads to these guidelines:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. Around midday, solar radiation is most harmful; hence, exposure should be limited. Stay sun-safe with clothing that is both closely woven and worn loosely. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in Lyon Mountain?
What is the average humidity in December in Lyon Mountain?
How many days does it rain in December in Lyon Mountain?
How many days does it snow in December in Lyon Mountain?
What is the month with the shortest days in Lyon Mountain?
How many hours of daylight does Lyon Mountain have in December?
When is the sunrise / sunset in December in Lyon Mountain?
How many hours of sunshine does Lyon Mountain have in December?
What are the months with the lowest UV index in Lyon Mountain?
What is the UV index intensity in December in Lyon Mountain?
Average temperature in December
Lyon Mountain, NY
- Average high temperature in December: 29.3°F
The warmest month (with the highest average high temperature) is July (77.4°F).
The month with the lowest average high temperature is January (23.7°F).
- Average low temperature in December: 19°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 (10.8°F).
Average pressure in December
Lyon Mountain, NY
- Average pressure in December: 30.04"Hg
The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Lyon Mountain, NY
- Average wind speed in December: 7mph
The windiest month (with the highest average wind speed) is April (8mph).
The calmest month (with the lowest average wind speed) is August (5.9mph).
Average humidity in December
Lyon Mountain, NY
- Average humidity in December: 86%
The month with the highest relative humidity is February (89%).
The month with the lowest relative humidity is May (76%).
Average rainfall in December
Lyon Mountain, NY
- Average rainfall in December: 2.56"
The wettest month (with the highest rainfall) is June (3.43").
The driest month (with the least rainfall) is September (1.85").
Average rainfall days in December
Lyon Mountain, NY
- Average rainfall days in December: 11.3 days
The month with the highest number of rainy days is June (19.1 days).
The month with the least rainy days is February (8 days).
Average snowfall in December
Lyon Mountain, NY
- Average snowfall in December: 9.53"
The month with the highest snowfall is February (13.35").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Lyon Mountain, NY
- Average snowfall days in December: 19.5 days
The month with the highest number of snowfall days is February (21.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Lyon Mountain, NY
- Average daylight in December: 8h and 5min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in December: 3h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 3h and 18min).
Average sunshine days in December
Lyon Mountain, NY
- Average sunshine days in December: 8 days
The month with the most sunshine days is September (15 days).
The month with the least sunshine days is February (5.1 days).
Average UV index in December
Lyon Mountain, 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 and December (UV index 1).
Average cloud cover in December
Lyon Mountain, NY
- Average cloud cover in December: 64
The month with the most cloud cover is February (Cloud cover 68).
The months with the least cloud cover are July and August (Cloud cover 32).
Average visibility in December
Lyon Mountain, NY
- Average visibility in December: 5mi
The months with the highest visibility are May, July, August and September (6mi).
The months with the lowest visibility are January and February (4mi).
Lyon Mountain, New York, USA
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