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
December brings a slight decrease in the average high-temperature, shifting from a mild 55.6°F (13.1°C) in November to a chilly 48.2°F (9°C). Throughout December nights, Deal Island registers an average low-temperature of 38.1°F (3.4°C).Humidity
In Deal Island, the average relative humidity in December is 77%.Rainfall
In Deal Island, in December, it is raining for 11 days, with typically 2.24" (57mm) of accumulated precipitation. In Deal Island, during the entire year, the rain falls for 158.7 days and collects up to 30.35" (771mm) of precipitation.Snowfall
January through March, November and December are months with snowfall in Deal Island. In Deal Island, Maryland, in December, snow falls for 1.5 days, with typically accumulated 0.51" (13mm) of snow. Throughout the year, in Deal Island, there are 8.7 snowfall days, and 3.74" (95mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 36min of daylight.On the first day of December, sunrise is at 7:01 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 4:54 pm EST.
Sunshine
The month with the least sunshine is December, with an average of 5.2h of sunshine.UV index
January and December, with an average maximum UV index of 2, are months with the lowest UV index in Deal Island. A UV Index estimate of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for the average person.Note: In December, the UV index of 2 transforms into the following advice:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. It's recommended to limit sun exposure when its radiation is at its peak during midday. Boost your sun resistance with garments that are densely woven yet spacious. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Frequently asked questions
What are December temperatures in Deal Island?
What is the average humidity in December in Deal Island?
How many days does it rain in December in Deal Island?
How many days does it snow in December in Deal Island?
What is the month with the shortest days in Deal Island?
What is the average length of the day in December in Deal Island?
When are sunrise and sunset in December in Deal Island?
What is the month with the least sunshine in Deal Island?
How many hours of sunshine does Deal Island have in December?
What are the months with the lowest UV index in Deal Island?
How high is the UV index in December in Deal Island?
Average temperature in December
Deal Island, MD
- Average high temperature in December: 48.2°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 (42.1°F).
- Average low temperature in December: 38.1°F
The month with the highest average low temperature is July (72.3°F).
The coldest month (with the lowest average low temperature) is January (31.5°F).
Average pressure in December
Deal Island, MD
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in December
Deal Island, MD
- Average wind speed in December: 9.6mph
The windiest months (with the highest average wind speed) are January, February and March (10.4mph).
The calmest month (with the lowest average wind speed) is August (7mph).
Average humidity in December
Deal Island, MD
- Average humidity in December: 77%
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is January (74%).
Average rainfall in December
Deal Island, MD
- Average rainfall in December: 2.24"
The wettest month (with the highest rainfall) is August (3.46").
The driest month (with the least rainfall) is January (1.93").
Average rainfall days in December
Deal Island, MD
- Average rainfall days in December: 11 days
The month with the highest number of rainy days is July (18.1 days).
The month with the least rainy days is January (9.7 days).
Average snowfall in December
Deal Island, MD
- Average snowfall in December: 0.51"
The month with the highest snowfall is January (1.34").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Deal Island, MD
- Average snowfall days in December: 1.5 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 daylight in December /
Average sunshine in December
Deal Island, MD
- Average daylight in December: 9h and 4min
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 36min).
- Average sunshine in December: 5h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 12min).
Average sunshine days in December
Deal Island, MD
- Average sunshine days in December: 18.4 days
The month with the most sunshine days is November (18.8 days).
The month with the least sunshine days is August (9.8 days).
Average UV index in December
Deal Island, MD
- 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
Deal Island, MD
- Average cloud cover in December: 42
The month with the most cloud cover is March (Cloud cover 44).
The month with the least cloud cover is July (Cloud cover 26).
Average visibility in December
Deal Island, MD
- 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).
Deal Island, Maryland, USA
Weather forecast for your location
2. Allow the app to use your location
