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
With the arrival of December, Smithville experiences a modest decline in average high-temperatures, transitioning from a fresh 54.1°F (12.3°C) in November to a frosty 46°F (7.8°C). A modest nighttime temperature average of 37°F (2.8°C) characterizes December in Smithville.Humidity
The average relative humidity in December in Smithville is 76%.Rainfall
The month with the most rainfall in Smithville is December, when the rain falls for 11.5 days and typically aggregates up to 3.07" (78mm) of precipitation.Snowfall
January through April, November and December are months with snowfall in Smithville. In Smithville, New Jersey, in December, snow falls for 2 days, with typically accumulated 1.1" (28mm) of snow. Throughout the year, there are 13 snowfall days, and 5.35" (136mm) of snow is accumulated.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 4:34 pm. On the last day of December, in Smithville, sunrise is at 7:18 am and sunset at 4:44 pm EST.
Sunshine
In December, the average sunshine is 5.1h.UV index
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for the average person.Note: An average UV index of 2 in December transforms into this advice:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
Frequently asked questions
What are December temperatures in Smithville?
What is the average humidity in December in Smithville?
What is the wettest month in Smithville?
How many days does it rain in December in Smithville?
How many days does it snow in December in Smithville?
What is the month with the shortest days in Smithville?
How many hours of daylight does Smithville have in December?
When is the sunrise / sunset in December in Smithville?
How many hours of sunshine does Smithville have in December?
What are the months with the lowest UV index in Smithville?
What is the UV index intensity in December in Smithville?
Average temperature in December
Smithville, NJ
- Average high temperature in December: 46°F
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (39.7°F).
- Average low temperature in December: 37°F
The month with the highest average low temperature is July (71.1°F).
The coldest month (with the lowest average low temperature) is January (30°F).
Average pressure in December
Smithville, NJ
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
Smithville, NJ
- Average wind speed in December: 10.6mph
The windiest months (with the highest average wind speed) are January and February (11.1mph).
The calmest month (with the lowest average wind speed) is August (7.6mph).
Average humidity in December
Smithville, NJ
- Average humidity in December: 76%
The months with the highest relative humidity are May and June (80%).
The months with the lowest relative humidity are January, March, April and November (74%).
Average rainfall in December
Smithville, NJ
- Average rainfall in December: 3.07"
The wettest month (with the highest rainfall) is December (3.07").
The driest month (with the least rainfall) is September (1.73").
Average rainfall days in December
Smithville, NJ
- Average rainfall days in December: 11.5 days
The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is November (8.9 days).
Average snowfall in December
Smithville, NJ
- Average snowfall in December: 1.1"
The month with the highest snowfall is January (1.73").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Smithville, NJ
- Average snowfall days in December: 2 days
The month with the highest number of snowfall days is January (4.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Smithville, NJ
- Average daylight in December: 9h and 2min
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 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
Smithville, NJ
- Average sunshine days in December: 16.9 days
The month with the most sunshine days is November (19.6 days).
The months with the least sunshine days are May and July (14.1 days).
Average UV index in December
Smithville, NJ
- Average UV index in December: 2
The months with the highest UV index are May, 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
Smithville, NJ
- Average cloud cover in December: 45
The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in December
Smithville, 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).
Smithville, New Jersey, USA
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