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 onset of December, Henlopen Acres experiences a modest temperature adjustment, with the average high-temperature gently receding from a fresh 54.5°F (12.5°C) in November to a chilly 47.3°F (8.5°C). Henlopen Acres observes a consistent average low-temperature of 39.4°F (4.1°C) throughout December nights.Humidity
In Henlopen Acres, the average relative humidity in December is 75%.Rainfall
In Henlopen Acres, during December, the rain falls for 6.6 days and regularly aggregates up to 0.55" (14mm) of precipitation. In Henlopen Acres, during the entire year, the rain falls for 89.4 days and collects up to 6.18" (157mm) of precipitation.Snowfall
Months with snowfall are January through March, November and December. The months with the most snowfall in Henlopen Acres are January and December, with an average 0.12" (3mm) of accumulated snow.Daylight
December has the shortest days of the year, 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 4:39 pm. On the last day of December, sunrise is at 7:18 am and sunset at 4:49 pm EST.
Sunshine
In Henlopen Acres, the average sunshine in December is 5.3h.UV index
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index in Henlopen Acres, Delaware. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for average individuals.Note: The maximum daily UV index of 2 in December converts into the following recommendations:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Henlopen Acres in December?
What is the average humidity in December in Henlopen Acres?
How many days does it rain in December in Henlopen Acres?
What is the snowiest month in Henlopen Acres?
How much does it snow in Henlopen Acres in December?
What is the month with the shortest days in Henlopen Acres?
What is the average length of the day in December in Henlopen Acres?
When is the sunrise / sunset in December in Henlopen Acres?
How long on average sun shines in December in Henlopen Acres?
What are the months with the lowest UV index in Henlopen Acres?
What is the UV index intensity in December in Henlopen Acres?
Average temperature in December
Henlopen Acres, DE
- Average high temperature in December: 47.3°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (41.4°F).
- Average low temperature in December: 39.4°F
The month with the highest average low temperature is July (73.6°F).
The coldest month (with the lowest average low temperature) is January (33.1°F).
Average pressure in December
Henlopen Acres, 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
Henlopen Acres, DE
- Average wind speed in December: 12.6mph
The windiest month (with the highest average wind speed) is January (13mph).
The calmest month (with the lowest average wind speed) is August (8.8mph).
Average humidity in December
Henlopen Acres, DE
- 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
Henlopen Acres, DE
- Average rainfall in December: 0.55"
The wettest month (with the highest rainfall) is October (0.71").
The driest month (with the least rainfall) is September (0.28").
Average rainfall days in December
Henlopen Acres, DE
- Average rainfall days in December: 6.6 days
The month with the highest number of rainy days is July (10.2 days).
The month with the least rainy days is November (4.9 days).
Average snowfall in December
Henlopen Acres, DE
- Average snowfall in December: 0.12"
The months with the highest snowfall are January and December (0.12").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Henlopen Acres, DE
- Average snowfall days in December: 1.3 days
The month with the highest number of snowfall days is January (2.4 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
Henlopen Acres, DE
- Average daylight in December: 9h and 3min
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 2min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).
Average sunshine days in December
Henlopen Acres, DE
- Average sunshine days in December: 22.5 days
The month with the most sunshine days is January (23.5 days).
The months with the least sunshine days are June and July (18.2 days).
Average UV index in December
Henlopen Acres, 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 and December (UV index 2).
Average cloud cover in December
Henlopen Acres, DE
- Average cloud cover in December: 43
The month with the most cloud cover is February (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 24).
Average visibility in December
Henlopen Acres, 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).
Henlopen Acres, Delaware, USA
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