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 shift from November to December involves a decrease in the average high-temperature, from a chilly 44.4°F (6.9°C) to an icy 34.3°F (1.3°C). Nighttime temperature dips to a mean of 24.6°F (-4.1°C) during December.Humidity
The average relative humidity in December is 85%.Rainfall
In Johnson City, in December, it is raining for 10.1 days, with typically 1.61" (41mm) of accumulated precipitation. Throughout the year, there are 155.2 rainfall days, and 24.45" (621mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In December, it is snowing for 13.1 days. Throughout December, 4.02" (102mm) of snow is accumulated. Throughout the year, there are 68.5 snowfall days, and 21.1" (536mm) of snow is accumulated.Daylight
The month with the shortest days in Johnson City is December, with an average of 9h and 12min of daylight.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 Johnson City, sunrise is at 7:32 am and sunset at 4:42 pm EST.
Sunshine
In Johnson City, the average sunshine in December is 3h.UV index
January, November and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum daily UV index of 1 in December converts into the following recommendations:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Johnson City in 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 in Johnson City?
How many hours of daylight does Johnson City have in December?
When are sunrise and sunset in December?
How many hours of sunshine does Johnson City have in December?
What are the months with the lowest UV index?
What is the UV index intensity in December in Johnson City?
Average temperature in December
Johnson City, NY
- Average high temperature in December: 34.3°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (28.4°F).
- Average low temperature in December: 24.6°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 (16.9°F).
Average pressure in December
Johnson City, 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
Johnson City, NY
- Average wind speed in December: 8.6mph
The windiest month (with the highest average wind speed) is January (8.9mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in December
Johnson City, 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, June and July (79%).
Average rainfall in December
Johnson City, NY
- Average rainfall in December: 1.61"
The wettest month (with the highest rainfall) is August (2.83").
The driest month (with the least rainfall) is January (1.38").
Average rainfall days in December
Johnson City, NY
- Average rainfall days in December: 10.1 days
The month with the highest number of rainy days is July (17.5 days).
The months with the least rainy days are January and February (7 days).
Average snowfall in December
Johnson City, NY
- Average snowfall in December: 4.02"
The month with the highest snowfall is February (4.57").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Johnson City, NY
- Average snowfall days in December: 13.1 days
The month with the highest number of snowfall days is January (16.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Johnson City, 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: 3h and 0min
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 42min).
Average sunshine days in December
Johnson City, NY
- Average sunshine days in December: 10.5 days
The month with the most sunshine days is September (15.5 days).
The month with the least sunshine days is April (9.5 days).
Average UV index in December
Johnson City, 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, November and December (UV index 1).
Average cloud cover in December
Johnson City, NY
- Average cloud cover in December: 70
The month with the most cloud cover is February (Cloud cover 73).
The month with the least cloud cover is July (Cloud cover 38).
Average visibility in December
Johnson City, NY
- Average visibility in December: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
Johnson City, New York, USA
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