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
With December's onset, the weather shows a temperature decrease, transitioning from a cold 40.3°F (4.6°C) in November to a subzero cold 29.5°F (-1.4°C). Keene Valley experiences a steady low-temperature of 18.9°F (-7.3°C) throughout December.Humidity
In December, the average relative humidity is 85%.Rainfall
In Keene Valley, in December, during 11.2 rainfall days, 2.56" (65mm) of precipitation is typically accumulated. Throughout the year, there are 176.8 rainfall days, and 32.13" (816mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Keene Valley, in December, during 18.5 snowfall days, 9.13" (232mm) of snow is typically accumulated. In Keene Valley, during the entire year, snow falls for 102 days and aggregates up to 57.91" (1471mm) of snow.Daylight
The month with the shortest days is December, with an average of 8h and 54min of daylight.On the first day of the month, sunrise is at 7:11 am and sunset at 4:17 pm. On the last day of December, sunrise is at 7:30 am and sunset at 4:26 pm EST.
Sunshine
In December, the average sunshine in Keene Valley is 3.5h.UV index
December is the month with the lowest UV index, 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 maximum UV index, 1 during December, leads to the following recommendations:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the average humidity in December?
How much does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
What time are sunrise and sunset in December in Keene Valley?
How many hours of sunshine does Keene Valley have in December?
When is the lowest UV index?
How high is the UV index in December?
Average temperature in December
Keene Valley, NY
- Average high temperature in December: 29.5°F
The warmest month (with the highest average high temperature) is July (76.8°F).
The month with the lowest average high temperature is January (23.7°F).
- Average low temperature in December: 18.9°F
The month with the highest average low temperature is July (55.4°F).
The coldest month (with the lowest average low temperature) is January (10.9°F).
Average pressure in December
Keene Valley, NY
- Average pressure in December: 30.05"Hg
The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Keene Valley, NY
- Average wind speed in December: 6.4mph
The windiest month (with the highest average wind speed) is April (7.2mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in December
Keene Valley, 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 (76%).
Average rainfall in December
Keene Valley, NY
- Average rainfall in December: 2.56"
The wettest months (with the highest rainfall) are June and October (3.39").
The driest month (with the least rainfall) is September (1.93").
Average rainfall days in December
Keene Valley, NY
- Average rainfall days in December: 11.2 days
The months with the highest number of rainy days are May and June (18.3 days).
The month with the least rainy days is February (9.3 days).
Average snowfall in December
Keene Valley, NY
- Average snowfall in December: 9.13"
The month with the highest snowfall is February (13.27").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Keene Valley, NY
- Average snowfall days in December: 18.5 days
The month with the highest number of snowfall days is January (22.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Keene Valley, 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 3min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 3h and 0min).
Average sunshine days in December
Keene Valley, NY
- Average sunshine days in December: 8.1 days
The month with the most sunshine days is September (13.6 days).
The month with the least sunshine days is February (4.8 days).
Average UV index in December
Keene Valley, NY
- Average UV index in December: 1
The months with the highest UV index are June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Keene Valley, NY
- Average cloud cover in December: 65
The month with the most cloud cover is February (Cloud cover 70).
The months with the least cloud cover are July and August (Cloud cover 36).
Average visibility in December
Keene Valley, NY
- Average visibility in December: 4mi
The months with the highest visibility are April, May, June, July, August, September, October and November (5mi).
The months with the lowest visibility are January, February, March and December (4mi).
Keene Valley, New York, USA
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