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 onset of December brings a small change in high-temperatures, falling from an icy 40.1°F (4.5°C) in November to a freezing cold 29.5°F (-1.4°C). The nighttime temperature dips to 19.9°F (-6.7°C) on average during December.Humidity
In December, the average relative humidity is 85%.Rainfall
In Johnsburg, during December, the rain falls for 12 days and regularly aggregates up to 1.14" (29mm) of precipitation. Throughout the year, there are 160 rainfall days, and 15.04" (382mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. The month with the most snowfall is December, when snow falls for 17.1 days and typically aggregates up to 3.82" (97mm) of snow.Daylight
With an average of 9h and 0min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:09 am and sunset at 4:20 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 4:29 pm EST.
Sunshine
In Johnsburg, the average sunshine in December is 3.4h.UV index
January through March and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for the ordinary person.Note: In December, a daily maximum UV index of 1 leads to the following instructions:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
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?
What is the snowiest month?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Johnsburg have in December?
What time are sunrise and sunset in December?
How many hours of sunshine does Johnsburg have in December?
What is the month with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Johnsburg, 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: 19.9°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 (11.7°F).
Average pressure in December
Johnsburg, NY
- Average pressure in December: 30.05"Hg
The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Johnsburg, NY
- Average wind speed in December: 6.7mph
The windiest month (with the highest average wind speed) is April (7.4mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).
Average humidity in December
Johnsburg, NY
- Average humidity in December: 85%
The months with the highest relative humidity are January and February (88%).
The month with the lowest relative humidity is May (77%).
Average rainfall in December
Johnsburg, NY
- Average rainfall in December: 1.14"
The wettest month (with the highest rainfall) is October (1.73").
The driest months (with the least rainfall) are January and February (0.91").
Average rainfall days in December
Johnsburg, NY
- Average rainfall days in December: 12 days
The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is February (8.3 days).
Average snowfall in December
Johnsburg, NY
- Average snowfall in December: 3.82"
The month with the highest snowfall is December (3.82").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Johnsburg, NY
- Average snowfall days in December: 17.1 days
The month with the highest number of snowfall days is January (20 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Johnsburg, NY
- Average daylight in December: 9h and 0min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in December: 3h and 2min
The month with the most sunshine is July (Average sunshine: 9h and 42min).
The month with the least sunshine is February (Average sunshine: 3h and 0min).
Average sunshine days in December
Johnsburg, NY
- Average sunshine days in December: 9.2 days
The month with the most sunshine days is September (15.7 days).
The month with the least sunshine days is February (7.8 days).
Average UV index in December
Johnsburg, 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, February, March and December (UV index 1).
Average cloud cover in December
Johnsburg, NY
- Average cloud cover in December: 66
The month with the most cloud cover is February (Cloud cover 69).
The month with the least cloud cover is July (Cloud cover 40).
Average visibility in December
Johnsburg, NY
- Average visibility in December: 5mi
The months with the highest visibility are April, May, June, July, October, November and December (5mi).
The months with the lowest visibility are January, February, March, August and September (4mi).
Johnsburg, New York, USA
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