December weather forecastWilmington Manor, DE
December
Weather in December
The first month of the winter, December, is still a chilly month in Wilmington Manor, Delaware, with an average temperature fluctuating between 32.9°F (0.5°C) and 44.1°F (6.7°C).Temperature
December comes with a decrease in the average high-temperature, falling from a cool 53.2°F (11.8°C) in November to a chilly 44.1°F (6.7°C). Throughout the nights in December, Wilmington Manor experiences an average low-temperature of 32.9°F (0.5°C).Humidity
In December, the average relative humidity is 77%.Rainfall
In Wilmington Manor, during December, the rain falls for 8.8 days and regularly aggregates up to 1.85" (47mm) of precipitation. Throughout the year, in Wilmington Manor, there are 143.2 rainfall days, and 21.89" (556mm) of precipitation is accumulated.Snowfall
January through April, November and December are months with snowfall. In Wilmington Manor, in December, during 2.4 snowfall days, 0.51" (13mm) of snow is typically accumulated. In Wilmington Manor, during the entire year, snow falls for 15 days and aggregates up to 5.47" (139mm) of snow.Daylight
With an average of 9h and 24min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:04 am and sunset at 4:38 pm. On the last day of December, in Wilmington Manor, Delaware, sunrise is at 7:23 am and sunset at 4:48 pm EST.
Sunshine
The average sunshine in December is 5.1h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Wilmington Manor, Delaware. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for average individuals.Note: The daily high UV index of 2 during December translates into the following recommendations:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Enhance your sun protection with tightly woven, yet airy clothing. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Wilmington Manor, DE
- Average high temperature in December: 44.1°F
The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is January (37.8°F).
- Average low temperature in December: 32.9°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).
Average pressure in December
Wilmington Manor, DE
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
Wilmington Manor, DE
- Average wind speed in December: 8.1mph
The windiest months (with the highest average wind speed) are February and March (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).
Average humidity in December
Wilmington Manor, DE
- Average humidity in December: 77%
The month with the highest relative humidity is October (78%).
The month with the lowest relative humidity is April (72%).
Average rainfall in December
Wilmington Manor, DE
- Average rainfall in December: 1.85"
The wettest month (with the highest rainfall) is August (2.83").
The driest month (with the least rainfall) is January (1.38").
Average rainfall days in December
Wilmington Manor, DE
- Average rainfall days in December: 8.8 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (7.8 days).
Average snowfall in December
Wilmington Manor, DE
- Average snowfall in December: 0.51"
The month with the highest snowfall is January (1.69").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Wilmington Manor, DE
- Average snowfall days in December: 2.4 days
The month with the highest number of snowfall days is January (5.2 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
Wilmington Manor, DE
- Average daylight in December: 9h and 24min
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 6min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).
Average sunshine days in December
Wilmington Manor, DE
- Average sunshine days in December: 19.1 days
The month with the most sunshine days is November (20.1 days).
The month with the least sunshine days is May (11.8 days).
Average UV index in December
Wilmington Manor, 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, February, November and December (UV index 2).
Average cloud cover in December
Wilmington Manor, DE
- Average cloud cover in December: 45
The months with the most cloud cover are February and March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in December
Wilmington Manor, 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).
