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 December, the average high-temperature marginally drops from a fresh 53.1°F (11.7°C) in November to a frosty 44.2°F (6.8°C). During December nights, Old Germantown records an average temperature of 31.8°F (-0.1°C).Humidity
October and December, with an average relative humidity of 78%, are the most humid months in Old Germantown.Rainfall
In Old Germantown, in December, it is raining for 10.5 days, with typically 2.36" (60mm) of accumulated precipitation. Throughout the year, in Old Germantown, Maryland, there are 159.4 rainfall days, and 30.71" (780mm) of precipitation is accumulated.Snowfall
January through May, November and December are months with snowfall in Old Germantown. In Old Germantown, in December, snow falls for 3 days, with typically accumulated 1.57" (40mm) of snow. In Old Germantown, during the entire year, snow falls for 19.1 days and aggregates up to 10.04" (255mm) of snow.Daylight
The month with the shortest days in Old Germantown is December, with an average of 9h and 30min of daylight.On the first day of the month, sunrise is at 7:10 am and sunset at 4:46 pm. On the last day of December, sunrise is at 7:28 am and sunset at 4:56 pm EST.
Sunshine
In December, the average sunshine is 5.2h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for average individuals.Note: The UV index of 2 during December translates into the following guidance:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Enhance your sun protection with tightly woven, yet airy clothing. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Frequently asked questions
How cold is it in Old Germantown in December?
What are the most humid months in Old Germantown?
What is the average humidity in December in Old Germantown?
How much does it rain in Old Germantown in December?
How much does it snow in Old Germantown in December?
What is the month with the shortest days in Old Germantown?
How many hours of daylight does Old Germantown have in December?
When are sunrise and sunset in December in Old Germantown?
How many hours of sunshine does Old Germantown have in December?
When is the lowest UV index in Old Germantown?
What is the UV index intensity in December in Old Germantown?
Average temperature in December
Old Germantown, MD
- Average high temperature in December: 44.2°F
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (38.8°F).
- Average low temperature in December: 31.8°F
The month with the highest average low temperature is July (66.9°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).
Average pressure in December
Old Germantown, 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
Old Germantown, MD
- Average wind speed in December: 7mph
The windiest month (with the highest average wind speed) is March (7.8mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).
Average humidity in December
Old Germantown, MD
- Average humidity in December: 78%
The months with the highest relative humidity are October and December (78%).
The month with the lowest relative humidity is July (72%).
Average rainfall in December
Old Germantown, MD
- Average rainfall in December: 2.36"
The wettest month (with the highest rainfall) is August (3.78").
The driest months (with the least rainfall) are January and February (1.97").
Average rainfall days in December
Old Germantown, MD
- Average rainfall days in December: 10.5 days
The month with the highest number of rainy days is May (17.5 days).
The months with the least rainy days are January and November (9.5 days).
Average snowfall in December
Old Germantown, MD
- Average snowfall in December: 1.57"
The month with the highest snowfall is March (2.83").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
Old Germantown, MD
- Average snowfall days in December: 3 days
The months with the highest number of snowfall days are January and February (5.8 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Old Germantown, 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 1min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is January (Average sunshine: 5h and 0min).
Average sunshine days in December
Old Germantown, MD
- Average sunshine days in December: 18.2 days
The month with the most sunshine days is November (19 days).
The month with the least sunshine days is July (11.3 days).
Average UV index in December
Old Germantown, 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
Old Germantown, MD
- Average cloud cover in December: 45
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in December
Old Germantown, 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).
Old Germantown, Maryland, USA
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