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
As December commences, the average high-temperature shows a reduction, transitioning from a frosty 43.7°F (6.5°C) in November to an icy 33.3°F (0.7°C). In Glen Castle, the average temperature during the nights of December drops to a freezing cold 23.9°F (-4.5°C).Humidity
In December, the average relative humidity in Glen Castle is 86%.Rainfall
In Glen Castle, in December, it is raining for 11.2 days, with typically 2.76" (70mm) of accumulated precipitation. In Glen Castle, during the entire year, the rain falls for 173.5 days and collects up to 35.67" (906mm) of precipitation.Snowfall
Months with snowfall in Glen Castle are January through May, October through December. In Glen Castle, in December, during 18.2 snowfall days, 8.54" (217mm) of snow is typically accumulated. Throughout the year, there are 94.8 snowfall days, and 48.82" (1240mm) of snow is accumulated.Daylight
With an average of 9h and 12min of daylight, December has the shortest days of the year in Glen Castle.On the first day of the month, sunrise is at 7:13 am and sunset at 4:32 pm. On the last day of December, in Glen Castle, sunrise is at 7:32 am and sunset at 4:41 pm EST.
Sunshine
In Glen Castle, New York, the average sunshine in December is 2.9h.UV index
The months with the lowest UV index are January, February and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: A maximum high UV index of 1 in December translates into the following recommendations:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Frequently asked questions
How cold is December in Glen Castle?
What is the average humidity in December in Glen Castle?
How many days does it rain in December in Glen Castle?
How many days does it snow in December in Glen Castle?
What is the month with the shortest days in Glen Castle?
What is the average length of the day in December in Glen Castle?
When are sunrise and sunset in December in Glen Castle?
How many hours of sunshine does Glen Castle have in December?
When is the lowest UV index in Glen Castle?
What is the UV index intensity in December in Glen Castle?
Average temperature in December
Glen Castle, NY
- Average high temperature in December: 33.3°F
The warmest month (with the highest average high temperature) is July (79°F).
The month with the lowest average high temperature is January (27.3°F).
- Average low temperature in December: 23.9°F
The month with the highest average low temperature is July (57.4°F).
The coldest month (with the lowest average low temperature) is January (15.8°F).
Average pressure in December
Glen Castle, NY
- Average pressure in December: 30.08"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Glen Castle, NY
- Average wind speed in December: 8.9mph
The windiest month (with the highest average wind speed) is January (9.3mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).
Average humidity in December
Glen Castle, NY
- Average humidity in December: 86%
The month with the highest relative humidity is February (87%).
The months with the lowest relative humidity are April, May, June and July (80%).
Average rainfall in December
Glen Castle, NY
- Average rainfall in December: 2.76"
The wettest month (with the highest rainfall) is June (3.58").
The driest months (with the least rainfall) are January and November (2.4").
Average rainfall days in December
Glen Castle, NY
- Average rainfall days in December: 11.2 days
The month with the highest number of rainy days is July (19.3 days).
The month with the least rainy days is February (7.3 days).
Average snowfall in December
Glen Castle, NY
- Average snowfall in December: 8.54"
The month with the highest snowfall is February (10.87").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Glen Castle, NY
- Average snowfall days in December: 18.2 days
The month with the highest number of snowfall days is January (21.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Glen Castle, NY
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 2h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 2h and 30min).
Average sunshine days in December
Glen Castle, NY
- Average sunshine days in December: 6.5 days
The month with the most sunshine days is September (14.3 days).
The month with the least sunshine days is February (5.7 days).
Average UV index in December
Glen Castle, NY
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February and December (UV index 1).
Average cloud cover in December
Glen Castle, NY
- Average cloud cover in December: 71
The month with the most cloud cover is February (Cloud cover 74).
The month with the least cloud cover is July (Cloud cover 39).
Average visibility in December
Glen Castle, NY
- Average visibility in December: 5mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January and February (4mi).
Glen Castle, New York, USA
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