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's onset introduces a mild reduction in the average high-temperature, from a cool 53.1°F (11.7°C) in November to a chilly 45°F (7.2°C). River Bank's nights in December maintain a consistent average of 36.1°F (2.3°C), demonstrating a minimal differential from its daytime temperature.Humidity
In River Bank, New Jersey, the average relative humidity in December is 77%.Rainfall
In River Bank, in December, during 9.6 rainfall days, 1.5" (38mm) of precipitation is typically accumulated. In River Bank, during the entire year, the rain falls for 129.4 days and collects up to 15.31" (389mm) of precipitation.Snowfall
January through March, November and December are months with snowfall in River Bank, New Jersey. December is the month with the most snowfall in River Bank. Snow falls for 2.8 days and accumulates 0.75" (19mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 24min of daylight.On the first day of the month, sunrise is at 6:59 am and sunset at 4:32 pm. On the last day of December, sunrise is at 7:18 am and sunset at 4:41 pm EST.
Sunshine
In December, the average sunshine is 5.1h.UV index
The months with the lowest UV index in River Bank are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The UV index of 2 in December translates into these instructions:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. A hat with a broad brim is indispensable, filtering out up to half of UV rays. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Frequently asked questions
What are the temperatures in River Bank in December?
What is the average humidity in December in River Bank?
How many days does it rain in December in River Bank?
What is the snowiest month in River Bank?
How much does it snow in River Bank in December?
What is the month with the shortest days in River Bank?
What is the average length of the day in December in River Bank?
When are sunrise and sunset in December in River Bank?
How long on average sun shines in December in River Bank?
What are the months with the lowest UV index in River Bank?
What is the UV index reading in December in River Bank?
Average temperature in December
River Bank, NJ
- Average high temperature in December: 45°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (38.7°F).
- Average low temperature in December: 36.1°F
The month with the highest average low temperature is July (70.7°F).
The coldest month (with the lowest average low temperature) is January (28.8°F).
Average pressure in December
River Bank, 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
River Bank, NJ
- Average wind speed in December: 11.1mph
The windiest month (with the highest average wind speed) is January (11.9mph).
The calmest months (with the lowest average wind speed) are July and August (7.8mph).
Average humidity in December
River Bank, NJ
- Average humidity in December: 77%
The months with the highest relative humidity are May and June (80%).
The months with the lowest relative humidity are January, March and November (74%).
Average rainfall in December
River Bank, NJ
- Average rainfall in December: 1.5"
The wettest month (with the highest rainfall) is July (1.97").
The driest month (with the least rainfall) is January (0.79").
Average rainfall days in December
River Bank, NJ
- Average rainfall days in December: 9.6 days
The month with the highest number of rainy days is July (14.3 days).
The month with the least rainy days is January (6.9 days).
Average snowfall in December
River Bank, NJ
- Average snowfall in December: 0.75"
The month with the highest snowfall is December (0.75").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
River Bank, NJ
- Average snowfall days in December: 2.8 days
The month with the highest number of snowfall days is January (4.3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
River Bank, NJ
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in December: 5h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).
Average sunshine days in December
River Bank, NJ
- Average sunshine days in December: 17.6 days
The month with the most sunshine days is November (20.6 days).
The month with the least sunshine days is July (13.9 days).
Average UV index in December
River Bank, NJ
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
River Bank, NJ
- Average cloud cover in December: 46
The month with the most cloud cover is February (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 28).
Average visibility in December
River Bank, NJ
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
River Bank, New Jersey, USA
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