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 brings a minor decrease, with the average high-temperature reducing from a chilly 43.2°F (6.2°C) in November to an icy 32.9°F (0.5°C). Summit's nighttime temperature during December is consistently averaged at a freezing cold 22.8°F (-5.1°C).Humidity
In Summit, the average relative humidity in December is 85%.Rainfall
In December, the rain falls for 11.4 days. Throughout December, 2.64" (67mm) of precipitation is accumulated. Throughout the year, there are 165.5 rainfall days, and 32.83" (834mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Summit, in December, during 15.5 snowfall days, 8.66" (220mm) of snow is typically accumulated. In Summit, during the entire year, snow falls for 81.8 days and aggregates up to 42.09" (1069mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 6min of daylight.On the first day of the month, sunrise is at 7:09 am and sunset at 4:26 pm. On the last day of December, sunrise is at 7:28 am and sunset at 4:35 pm EST.
Sunshine
The average sunshine in December is 3.4h.UV index
February, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Summit, New York. A UV Index reading of 2, and below, represents a low health risk from unsafe exposure to UV radiation for the ordinary person.Note: In December, the maximum UV index of 1 suggests this advice:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Experience reduced UV exposure by about half when donning a wide-brim hat. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
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 many days does it rain in December in Summit?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Summit have in December?
When are sunrise and sunset in December?
How many hours of sunshine does Summit have in December?
When is the lowest UV index in Summit?
What is the UV index intensity in December?
Average temperature in December
Summit, NY
- Average high temperature in December: 32.9°F
The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (26.8°F).
- Average low temperature in December: 22.8°F
The month with the highest average low temperature is July (57°F).
The coldest month (with the lowest average low temperature) is January (15.3°F).
Average pressure in December
Summit, NY
- Average pressure in December: 30.06"Hg
The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
Summit, NY
- Average wind speed in December: 8.7mph
The windiest month (with the highest average wind speed) is January (9.4mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).
Average humidity in December
Summit, NY
- Average humidity in December: 85%
The month with the highest relative humidity is February (86%).
The months with the lowest relative humidity are April and May (78%).
Average rainfall in December
Summit, NY
- Average rainfall in December: 2.64"
The wettest month (with the highest rainfall) is August (3.35").
The driest month (with the least rainfall) is September (2.13").
Average rainfall days in December
Summit, NY
- Average rainfall days in December: 11.4 days
The month with the highest number of rainy days is May (18.5 days).
The month with the least rainy days is January (7.8 days).
Average snowfall in December
Summit, NY
- Average snowfall in December: 8.66"
The month with the highest snowfall is February (9.06").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Summit, NY
- Average snowfall days in December: 15.5 days
The month with the highest number of snowfall days is January (18.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Summit, NY
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in December: 3h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 3h and 6min).
Average sunshine days in December
Summit, NY
- Average sunshine days in December: 9 days
The month with the most sunshine days is September (15 days).
The month with the least sunshine days is February (6.1 days).
Average UV index in December
Summit, 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 February, November and December (UV index 1).
Average cloud cover in December
Summit, NY
- Average cloud cover in December: 66
The month with the most cloud cover is February (Cloud cover 68).
The month with the least cloud cover is July (Cloud cover 37).
Average visibility in December
Summit, NY
- Average visibility in December: 5mi
The months with the highest visibility are January, March, April, May, June, July, August, September, October, November and December (5mi).
The month with the lowest visibility is February (4mi).
Summit, New York, USA
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