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 sea temperature 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
Long Neck in December experiences a gentle temperature dip, with average high-temperatures reducing from a cool 54.9°F (12.7°C) in November to a frosty 47.5°F (8.6°C). An average low-temperature of 37.8°F (3.2°C) is observed during December nights.Humidity
In Long Neck, the average relative humidity in December is 76%.Rainfall
In December, the rain falls for 9.7 days. Throughout December, 1.69" (43mm) of precipitation is accumulated. In Long Neck, during the entire year, the rain falls for 147.1 days and collects up to 25.59" (650mm) of precipitation.Snowfall
January through March, November and December are months with snowfall in Long Neck. In December, it is snowing for 1.9 days. Throughout December, 0.43" (11mm) of snow is accumulated. In Long Neck, during the entire year, snow falls for 9.4 days and aggregates up to 3.39" (86mm) of snow.Ocean temperature
In December, the average ocean temperature in Long Neck is 48.7°F (9.3°C).Note: Danger awaits those who swim in 48.7°F (9.3°C) without protection. Falling below 50°F (10°C) means intense cold shock and hyperventilation.
Daylight
With an average of 9h and 30min of daylight, December has the shortest days of the year.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 Long Neck, the average sunshine in December is 5.2h.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: A daily high UV index of 2 in December leads to these guidelines:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in December in Long Neck?
What is the average humidity in December?
How much does it rain in December?
How much does it snow in December?
How cold is the water in December?
What is the month with the shortest days?
How many hours of daylight does Long Neck have in December?
When is the sunrise / sunset in December?
How long on average sun shines in December?
When is the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Long Neck, DE
- Average high temperature in December: 47.5°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (41.7°F).
- Average low temperature in December: 37.8°F
The month with the highest average low temperature is July (71.6°F).
The coldest month (with the lowest average low temperature) is January (31.5°F).
Average pressure in December
Long Neck, 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
Long Neck, DE
- Average wind speed in December: 10.5mph
The windiest months (with the highest average wind speed) are January, February and March (11.1mph).
The calmest month (with the lowest average wind speed) is August (7.3mph).
Average humidity in December
Long Neck, DE
- Average humidity in December: 76%
The month with the highest relative humidity is May (81%).
The months with the lowest relative humidity are January and November (74%).
Average rainfall in December
Long Neck, DE
- Average rainfall in December: 1.69"
The wettest months (with the highest rainfall) are July and August (2.95").
The driest month (with the least rainfall) is January (1.46").
Average rainfall days in December
Long Neck, DE
- Average rainfall days in December: 9.7 days
The month with the highest number of rainy days is July (16.7 days).
The month with the least rainy days is January (7.4 days).
Average snowfall in December
Long Neck, DE
- Average snowfall in December: 0.43"
The month with the highest snowfall is January (1.22").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Long Neck, DE
- Average snowfall days in December: 1.9 days
The month with the highest number of snowfall days is January (3.1 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average sea temperature in December
Long Neck, DE
- Average sea temperature in December: 48.8°F
The best month for swimming (with the highest average sea temperature) is August (76.9°F).
The coldest month (with the lowest average sea temperature) is February (40.7°F).
Average daylight in December /
Average sunshine in December
Long Neck, 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 1min
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 6min).
Average sunshine days in December
Long Neck, DE
- Average sunshine days in December: 18.9 days
The month with the most sunshine days is January (20.1 days).
The month with the least sunshine days is July (12.2 days).
Average UV index in December
Long Neck, 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
Long Neck, DE
- Average cloud cover in December: 43
The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 26).
Average visibility in December
Long Neck, 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).
Long Neck, Delaware, USA
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