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
In Mariners, the average high-temperature in December gently drops from a refreshing 55.6°F (13.1°C) in November to a frosty 48.2°F (9°C). Throughout December, Mariners observes a steady low-temperature average of 39.9°F (4.4°C), reflecting a minor dip from daytime highs.Humidity
The average relative humidity in December is 76%.Rainfall
In Mariners, in December, it is raining for 10.6 days, with typically 2.4" (61mm) of accumulated precipitation. Throughout the year, there are 158.7 rainfall days, and 32.72" (831mm) of precipitation is accumulated.Snowfall
Months with snowfall in Mariners are January through March and December. December is the first month it typically snows in Mariners. Throughout December, in the average 0.9 snowfall days, it receives 0.24" (6mm) of snow. In Mariners, during the entire year, snow falls for 5.6 days and aggregates up to 2.4" (61mm) of snow.Daylight
December has the shortest days of the year, 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 7:19 am and sunset at 4:54 pm EST.
Sunshine
In December, the average sunshine in Mariners is 5.2h.UV index
The months with the lowest UV index in Mariners are January and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for the average person.Note: The maximum UV index of 2 during December leads to these instructions:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Frequently asked questions
What are December temperatures in Mariners?
What is the average humidity in December in Mariners?
How many days does it rain in December in Mariners?
When does it start snowing in Mariners?
What is the month with the shortest days in Mariners?
What is the average length of the day in December in Mariners?
What time are sunrise and sunset in December in Mariners?
How many hours of sunshine does Mariners have in December?
What are the months with the lowest UV index in Mariners?
What is the UV index reading in December in Mariners?
Average temperature in December
Mariners, MD
- Average high temperature in December: 48.2°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (42.4°F).
- Average low temperature in December: 39.9°F
The month with the highest average low temperature is July (74.7°F).
The coldest month (with the lowest average low temperature) is January (33.3°F).
Average pressure in December
Mariners, 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
Mariners, MD
- Average wind speed in December: 11.4mph
The windiest month (with the highest average wind speed) is January (12.1mph).
The calmest month (with the lowest average wind speed) is August (8.7mph).
Average humidity in December
Mariners, MD
- Average humidity in December: 76%
The month with the highest relative humidity is May (80%).
The months with the lowest relative humidity are January and November (74%).
Average rainfall in December
Mariners, MD
- Average rainfall in December: 2.4"
The wettest month (with the highest rainfall) is August (4.17").
The driest month (with the least rainfall) is January (1.93").
Average rainfall days in December
Mariners, MD
- Average rainfall days in December: 10.6 days
The month with the highest number of rainy days is July (18.1 days).
The month with the least rainy days is January (9.3 days).
Average snowfall in December
Mariners, MD
- Average snowfall in December: 0.24"
The month with the highest snowfall is January (0.79").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in December
Mariners, MD
- Average snowfall days in December: 0.9 days
The month with the highest number of snowfall days is January (1.9 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
Mariners, 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 48min).
The month with the least sunshine is February (Average sunshine: 5h and 6min).
Average sunshine days in December
Mariners, MD
- Average sunshine days in December: 17.8 days
The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is August (11.2 days).
Average UV index in December
Mariners, MD
- Average UV index in December: 2
The month with the highest UV index is August (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in December
Mariners, MD
- 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 27).
Average visibility in December
Mariners, 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).
Mariners, Maryland, USA
Weather forecast for your location
2. Allow the app to use your location
