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's arrival subtly correlates with a reduction in the average high-temperature, down from a cool 51.3°F (10.7°C) in November to a chilly 42.8°F (6°C). During the month of December, the nighttime temperature falls to an average of 30.4°F (-0.9°C).Humidity
In December, the average relative humidity in Patapsco is 79%.Rainfall
In Patapsco, in December, during 11 rainfall days, 2.4" (61mm) of precipitation is typically accumulated. Throughout the year, there are 158.9 rainfall days, and 32.68" (830mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall in Patapsco. In December, in Patapsco, it is snowing for 3.9 days. Throughout December, 1.93" (49mm) of snow is accumulated. Throughout the year, there are 23.9 snowfall days, and 13.31" (338mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 24min of daylight.On the first day of the month, sunrise is at 7:09 am and sunset at 4:44 pm. On the last day of December, sunrise is at 7:27 am and sunset at 4:53 pm EST.
Sunshine
In December, the average sunshine in Patapsco is 4.9h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for the average person.Note: In December, the UV index of 2 transforms into the following advice:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Frequently asked questions
How cold is it in Patapsco in December?
What is the average humidity in December in Patapsco?
How much does it rain in Patapsco in December?
How many days does it snow in December in Patapsco?
What is the month with the shortest days in Patapsco?
How many hours of daylight does Patapsco have in December?
When is the sunrise / sunset in December in Patapsco?
How long on average sun shines in December in Patapsco?
What are the months with the lowest UV index in Patapsco?
How high is the UV index in December in Patapsco?
Average temperature in December
Patapsco, MD
- Average high temperature in December: 42.8°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (36.9°F).
- Average low temperature in December: 30.4°F
The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is January (23.9°F).
Average pressure in December
Patapsco, MD
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
Patapsco, MD
- 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 (5.2mph).
Average humidity in December
Patapsco, MD
- Average humidity in December: 79%
The month with the highest relative humidity is May (81%).
The months with the lowest relative humidity are January, April, July and November (76%).
Average rainfall in December
Patapsco, MD
- Average rainfall in December: 2.4"
The wettest month (with the highest rainfall) is August (3.9").
The driest month (with the least rainfall) is February (2.13").
Average rainfall days in December
Patapsco, MD
- Average rainfall days in December: 11 days
The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is January (8.4 days).
Average snowfall in December
Patapsco, MD
- Average snowfall in December: 1.93"
The month with the highest snowfall is March (4.06").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Patapsco, MD
- Average snowfall days in December: 3.9 days
The month with the highest number of snowfall days is January (6.9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Patapsco, MD
- Average daylight in December: 9h and 2min
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: 4h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 36min).
Average sunshine days in December
Patapsco, MD
- Average sunshine days in December: 17.1 days
The month with the most sunshine days is November (18.6 days).
The month with the least sunshine days is July (11.6 days).
Average UV index in December
Patapsco, 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, February, November and December (UV index 2).
Average cloud cover in December
Patapsco, MD
- Average cloud cover in December: 48
The months with the most cloud cover are February and March (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in December
Patapsco, MD
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).
Patapsco, Maryland, USA
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