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 commencement of December indicates a gentle shift in the average high-temperature, receding from November's fresh 54.5°F (12.5°C) to a frosty 46.8°F (8.2°C). December nights in Rio Grande, New Jersey, anticipate an average temperature of 39.4°F (4.1°C), a modest decline from the daytime.Humidity
In December, the average relative humidity in Rio Grande is 75%.Rainfall
In Rio Grande, in December, during 10.6 rainfall days, 3.15" (80mm) of precipitation is typically accumulated. Throughout the year, there are 158 rainfall days, and 35.47" (901mm) of precipitation is accumulated.Snowfall
January through March and December are months with snowfall in Rio Grande. The month with the most snowfall in Rio Grande is December, when snow falls for 1.3 days and typically aggregates up to 1.06" (27mm) of snow.Daylight
December has the shortest days of the year in Rio Grande, New Jersey, with an average of 9h and 30min of daylight.On the first day of the month, sunrise is at 7:00 am and sunset at 4:37 pm. On the last day of December, in Rio Grande, sunrise is at 7:18 am and sunset at 4:47 pm EST.
Sunshine
The average sunshine in December in Rio Grande is 5.1h.UV index
The months with the lowest UV index in Rio Grande are January, February and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for the ordinary person.Note: A daily maximum UV index of 2 in December translates into the following instructions:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. The Sun's radiation is especially intense around midday; try to stay in shade during this period. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
Frequently asked questions
What are the temperatures in Rio Grande in December?
What is the average humidity in December in Rio Grande?
How much does it rain in Rio Grande in December?
When does it snow the most in Rio Grande?
When does it start to snow in Rio Grande?
What is the month with the shortest days in Rio Grande?
What is the average length of the day in December in Rio Grande?
What time are sunrise and sunset in December in Rio Grande?
How long on average sun shines in December in Rio Grande?
What are the months with the lowest UV index in Rio Grande?
What is the UV index reading in December in Rio Grande?
Average temperature in December
Rio Grande, NJ
- Average high temperature in December: 46.8°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (40.5°F).
- Average low temperature in December: 39.4°F
The month with the highest average low temperature is July (73.4°F).
The coldest month (with the lowest average low temperature) is January (32.2°F).
Average pressure in December
Rio Grande, NJ
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
Rio Grande, NJ
- Average wind speed in December: 13mph
The windiest month (with the highest average wind speed) is January (13.5mph).
The calmest month (with the lowest average wind speed) is July (9.2mph).
Average humidity in December
Rio Grande, NJ
- Average humidity in December: 75%
The month with the highest relative humidity is May (82%).
The month with the lowest relative humidity is November (73%).
Average rainfall in December
Rio Grande, NJ
- Average rainfall in December: 3.15"
The wettest month (with the highest rainfall) is August (3.86").
The driest month (with the least rainfall) is January (2.13").
Average rainfall days in December
Rio Grande, NJ
- Average rainfall days in December: 10.6 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is January (8.7 days).
Average snowfall in December
Rio Grande, NJ
- Average snowfall in December: 1.06"
The month with the highest snowfall is December (1.06").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in December
Rio Grande, NJ
- Average snowfall days in December: 1.3 days
The month with the highest number of snowfall days is February (2.5 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
Rio Grande, NJ
- Average daylight in December: 9h and 3min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 5h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).
Average sunshine days in December
Rio Grande, NJ
- Average sunshine days in December: 17.5 days
The month with the most sunshine days is November (18.9 days).
The months with the least sunshine days are May and June (12.5 days).
Average UV index in December
Rio Grande, 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 and December (UV index 2).
Average cloud cover in December
Rio Grande, NJ
- Average cloud cover in December: 45
The month with the most cloud cover is February (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 26).
Average visibility in December
Rio Grande, 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).
Rio Grande, New Jersey, USA
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