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
The arrival of December suggests a slight decrease in the average high-temperature, moving from a fresh 53.6°F (12°C) in November to a chilly 45.3°F (7.4°C). Stephen Knolls records an average nighttime low-temperature of 33.3°F (0.7°C) throughout December.Humidity
The months with the highest humidity in Stephen Knolls, Maryland, are May, October and December, with an average relative humidity of 75%.Rainfall
In Stephen Knolls, during December, the rain falls for 10.4 days and regularly aggregates up to 2.44" (62mm) of precipitation. Throughout the year, in Stephen Knolls, there are 154.8 rainfall days, and 30.28" (769mm) of precipitation is accumulated.Snowfall
January through April, November and December are months with snowfall in Stephen Knolls. In Stephen Knolls, in December, snow falls for 2.5 days, with typically accumulated 1.34" (34mm) of snow. In Stephen Knolls, Maryland, during the entire year, snow falls for 15 days and aggregates up to 9.17" (233mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 30min of daylight.On the first day of the month, sunrise is at 7:08 am and sunset at 4:46 pm. On the last day of December, in Stephen Knolls, Maryland, sunrise is at 7:27 am and sunset at 4:56 pm EST.
Sunshine
In December, the average sunshine is 5h.UV index
The months with the lowest UV index are January, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for the average person.Note: An average maximum UV index of 2 in December leads to these recommendations:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. To cut down UV radiation exposure by about half, sport a wide-brim hat. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
Frequently asked questions
What is the average December temperature in Stephen Knolls?
What is the most humid month in Stephen Knolls?
What is the average humidity in December in Stephen Knolls?
How much does it rain in Stephen Knolls in December?
How many days does it snow in December in Stephen Knolls?
What is the month with the shortest days in Stephen Knolls?
What is the average length of the day in December in Stephen Knolls?
What time are sunrise and sunset in December in Stephen Knolls?
How many hours of sunshine does Stephen Knolls have in December?
When is the lowest UV index in Stephen Knolls?
What is the UV index reading in December in Stephen Knolls?
Average temperature in December
Stephen Knolls, MD
- Average high temperature in December: 45.3°F
The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (39.7°F).
- Average low temperature in December: 33.3°F
The month with the highest average low temperature is July (69.6°F).
The coldest month (with the lowest average low temperature) is January (27.1°F).
Average pressure in December
Stephen Knolls, 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 (29.95"Hg).
Average wind speed in December
Stephen Knolls, MD
- Average wind speed in December: 7.1mph
The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in December
Stephen Knolls, MD
- Average humidity in December: 75%
The months with the highest relative humidity are May, October and December (75%).
The month with the lowest relative humidity is July (69%).
Average rainfall in December
Stephen Knolls, MD
- Average rainfall in December: 2.44"
The wettest month (with the highest rainfall) is August (3.86").
The driest month (with the least rainfall) is January (1.89").
Average rainfall days in December
Stephen Knolls, MD
- Average rainfall days in December: 10.4 days
The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is November (8.5 days).
Average snowfall in December
Stephen Knolls, MD
- Average snowfall in December: 1.34"
The month with the highest snowfall is January (2.87").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Stephen Knolls, MD
- Average snowfall days in December: 2.5 days
The month with the highest number of snowfall days is January (4.6 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
Stephen Knolls, MD
- Average daylight in December: 9h and 3min
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 30min).
- Average sunshine in December: 5h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).
Average sunshine days in December
Stephen Knolls, MD
- Average sunshine days in December: 17.7 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is May (12 days).
Average UV index in December
Stephen Knolls, 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, November and December (UV index 2).
Average cloud cover in December
Stephen Knolls, MD
- Average cloud cover in December: 46
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in December
Stephen Knolls, MD
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
Stephen Knolls, Maryland, USA
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