December weather forecastNassau, DE
December
Weather in December
December, the first month of the winter in Nassau, is still a chilly month, with temperature in the range of an average low of 39.2°F (4°C) and an average high of 46.9°F (8.3°C).Temperature
The shift from November to December includes a small decrease in the average high-temperature, from a fresh 54.5°F (12.5°C) to a frosty 46.9°F (8.3°C). Nights in December in Nassau exhibit a minor reduction to an average low temperature of 39.2°F (4°C).Humidity
The average relative humidity in December in Nassau is 76%.Rainfall
In Nassau, Delaware, in December, it is raining for 11.9 days, with typically 3.07" (78mm) of accumulated precipitation. In Nassau, during the entire year, the rain falls for 173.6 days and collects up to 36.97" (939mm) of precipitation.Snowfall
January through March, November and December are months with snowfall. In Nassau, in December, during 1.2 snowfall days, 0.91" (23mm) of snow is typically accumulated. In Nassau, during the entire year, snow falls for 10.1 days and aggregates up to 3.39" (86mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 30min of daylight.On the first day of December, sunrise is at 7:00 am and sunset at 4:39 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 4:49 pm EST.
Sunshine
In December, the average sunshine is 5.2h.UV index
The months with the lowest UV index in Nassau, Delaware, are January and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The daily maximum UV index of 2 in December interprets into the following advice:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Nassau, DE
- Average high temperature in December: 46.9°F
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (41.2°F).
- Average low temperature in December: 39.2°F
The month with the highest average low temperature is July (73°F).
The coldest month (with the lowest average low temperature) is January (32°F).
Average pressure in December
Nassau, DE
- Average pressure in December: 30.1"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
Nassau, DE
- Average wind speed in December: 11.9mph
The windiest month (with the highest average wind speed) is January (12.5mph).
The calmest month (with the lowest average wind speed) is August (8.3mph).
Average humidity in December
Nassau, DE
- Average humidity in December: 76%
The month with the highest relative humidity is May (81%).
The month with the lowest relative humidity is November (73%).
Average rainfall in December
Nassau, DE
- Average rainfall in December: 3.07"
The wettest month (with the highest rainfall) is August (4.13").
The driest month (with the least rainfall) is January (2.2").
Average rainfall days in December
Nassau, DE
- Average rainfall days in December: 11.9 days
The month with the highest number of rainy days is July (18.6 days).
The month with the least rainy days is January (9.6 days).
Average snowfall in December
Nassau, DE
- Average snowfall in December: 0.91"
The month with the highest snowfall is January (0.98").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Nassau, DE
- Average snowfall days in December: 1.2 days
The month with the highest number of snowfall days is January (3.7 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
Nassau, DE
- Average daylight in December: 9h and 30min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 5h and 12min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).
Average sunshine days in December
Nassau, DE
- Average sunshine days in December: 16.3 days
The month with the most sunshine days is November (17.6 days).
The month with the least sunshine days is May (9.8 days).
Average UV index in December
Nassau, DE
- 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 and December (UV index 2).
Average cloud cover in December
Nassau, DE
- Average cloud cover in December: 43
The months with the most cloud cover are February and March (Cloud cover 44).
The month with the least cloud cover is July (Cloud cover 26).
Average visibility in December
Nassau, DE
- 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).
