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
A subtle decrease in the average high-temperature marks December, falling from November's chilly 48.2°F (9°C) to a wintry 38.5°F (3.6°C). In Blairstown, December nights cool down to an average of 27.3°F (-2.6°C).Humidity
The months with the highest humidity are February and December, with an average relative humidity of 82%.Rainfall
In Blairstown, during December, the rain falls for 5.6 days and regularly aggregates up to 0.67" (17mm) of precipitation. In Blairstown, during the entire year, the rain falls for 89.8 days and collects up to 8.07" (205mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Blairstown. In December, in Blairstown, it is snowing for 3.4 days. Throughout December, 0.71" (18mm) of snow is accumulated. In Blairstown, during the entire year, snow falls for 22.7 days and aggregates up to 3.54" (90mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 18min of daylight.On the first day of December in Blairstown, sunrise is at 7:05 am and sunset at 4:32 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 4:41 pm EST.
Sunshine
In December, the average sunshine in Blairstown is 4.6h.UV index
December is the month with the lowest UV index, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: A typical high UV index of 1 in December suggests the following recommendations:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Frequently asked questions
Is it cold in Blairstown during December?
What are the most humid months in Blairstown?
What is the average humidity in December in Blairstown?
How many days does it rain in December in Blairstown?
How many days does it snow in December in Blairstown?
What is the month with the shortest days in Blairstown?
What is the average length of the day in December in Blairstown?
What time are sunrise and sunset in December in Blairstown?
How long on average sun shines in December in Blairstown?
When is the lowest UV index in Blairstown?
How high is the UV index in December in Blairstown?
Average temperature in December
Blairstown, NJ
- Average high temperature in December: 38.5°F
The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is January (33.3°F).
- Average low temperature in December: 27.3°F
The month with the highest average low temperature is July (61.7°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).
Average pressure in December
Blairstown, NJ
- 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
Blairstown, NJ
- Average wind speed in December: 7.1mph
The windiest month (with the highest average wind speed) is March (7.8mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in December
Blairstown, NJ
- Average humidity in December: 82%
The months with the highest relative humidity are February and December (82%).
The month with the lowest relative humidity is April (76%).
Average rainfall in December
Blairstown, NJ
- Average rainfall in December: 0.67"
The wettest month (with the highest rainfall) is July (0.98").
The driest month (with the least rainfall) is September (0.24").
Average rainfall days in December
Blairstown, NJ
- Average rainfall days in December: 5.6 days
The months with the highest number of rainy days are April and May (10.5 days).
The month with the least rainy days is February (4.5 days).
Average snowfall in December
Blairstown, NJ
- Average snowfall in December: 0.71"
The months with the highest snowfall are January and February (0.91").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Blairstown, NJ
- Average snowfall days in December: 3.4 days
The month with the highest number of snowfall days is February (7.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Blairstown, NJ
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 4h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).
Average sunshine days in December
Blairstown, NJ
- Average sunshine days in December: 23.1 days
The month with the most sunshine days is September (23.2 days).
The month with the least sunshine days is April (18 days).
Average UV index in December
Blairstown, NJ
- Average UV index in December: 1
The month with the highest UV index is June (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Blairstown, NJ
- Average cloud cover in December: 51
The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 37).
Average visibility in December
Blairstown, NJ
- Average visibility in December: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).
Blairstown, New Jersey, USA
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