December weather forecastDayton, NJ
December
Weather in December
The first month of the winter, December, is still a chilly month in Dayton, New Jersey, with an average temperature fluctuating between 43.2°F (6.2°C) and 32.7°F (0.4°C).Temperature
December is characterized by a mild reduction in the average high-temperature, from a fresh 52°F (11.1°C) in November to a frosty 43.2°F (6.2°C). In the month of December, the nighttime temperature dips to a steady average of 32.7°F (0.4°C).Humidity
February, May, October and December, with an average relative humidity of 77%, are the most humid months.Rainfall
In Dayton, in December, during 6.5 rainfall days, 0.79" (20mm) of precipitation is typically accumulated. In Dayton, during the entire year, the rain falls for 92.9 days and collects up to 7.32" (186mm) of precipitation.Snowfall
Months with snowfall in Dayton are January through March, November and December. In December, it is snowing for 2.2 days. Throughout December, 0.35" (9mm) of snow is accumulated. In Dayton, during the entire year, snow falls for 12.7 days and aggregates up to 1.5" (38mm) of snow.Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:02 am and sunset at 4:32 pm. On the last day of December, sunrise is at 7:20 am and sunset at 4:41 pm EST.
Sunshine
In Dayton, the average sunshine in December is 4.9h.UV index
The months with the lowest UV index in Dayton are January through March, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: In December, the maximum UV index of 2 transforms into these recommendations:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Dayton, NJ
- Average high temperature in December: 43.2°F
The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (37°F).
- Average low temperature in December: 32.7°F
The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (25°F).
Average pressure in December
Dayton, 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
Dayton, NJ
- Average wind speed in December: 8.5mph
The windiest month (with the highest average wind speed) is March (9.3mph).
The calmest month (with the lowest average wind speed) is August (5.9mph).
Average humidity in December
Dayton, NJ
- Average humidity in December: 77%
The months with the highest relative humidity are February, May, October and December (77%).
The months with the lowest relative humidity are April and August (73%).
Average rainfall in December
Dayton, NJ
- Average rainfall in December: 0.79"
The wettest month (with the highest rainfall) is July (0.94").
The driest month (with the least rainfall) is September (0.28").
Average rainfall days in December
Dayton, NJ
- Average rainfall days in December: 6.5 days
The month with the highest number of rainy days is July (10.7 days).
The months with the least rainy days are January and November (4.8 days).
Average snowfall in December
Dayton, NJ
- Average snowfall in December: 0.35"
The month with the highest snowfall is March (0.51").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Dayton, NJ
- Average snowfall days in December: 2.2 days
The month with the highest number of snowfall days is February (3.8 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
Dayton, NJ
- Average daylight in December: 9h and 18min
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 18min).
- Average sunshine in December: 4h and 54min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in December
Dayton, NJ
- Average sunshine days in December: 23 days
The month with the most sunshine days is January (24.2 days).
The month with the least sunshine days is July (15.7 days).
Average UV index in December
Dayton, 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, March, November and December (UV index 2).
Average cloud cover in December
Dayton, NJ
- Average cloud cover in December: 48
The months with the most cloud cover are February, March and December (Cloud cover 48).
The months with the least cloud cover are July and August (Cloud cover 32).
Average visibility in December
Dayton, 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).
