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
As December arrives, Washington Grove's weather displays a minor decrease in high-temperatures, transitioning from November's cool 53.1°F (11.7°C) to a frosty 44.2°F (6.8°C). December witnesses an average nighttime temperature of 32.2°F (0.1°C) in Washington Grove.Humidity
May, October and December, with an average relative humidity of 77%, are the most humid months.Rainfall
In December, in Washington Grove, the rain falls for 10.5 days. Throughout December, 2.09" (53mm) of precipitation is accumulated. Throughout the year, in Washington Grove, there are 154.8 rainfall days, and 29.09" (739mm) of precipitation is accumulated.Snowfall
January through May, November and December are months with snowfall in Washington Grove. In December, in Washington Grove, it is snowing for 2.5 days. Throughout December, 1.38" (35mm) of snow is accumulated. Throughout the year, in Washington Grove, there are 16.7 snowfall days, and 9.76" (248mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 30min of daylight.On the first day of the month, sunrise is at 7:09 am and sunset at 4:46 pm. On the last day of December, sunrise is at 7:27 am and sunset at 4:56 pm EST.
Sunshine
The months with the least sunshine in Washington Grove are January, February and December, with an average of 5.1h of sunshine.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 of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: In December, an average UV index of 2 transforms into the following instructions:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
Frequently asked questions
Is it cold in Washington Grove during December?
What is the most humid month in Washington Grove?
What is the average humidity in December in Washington Grove?
How much does it rain in Washington Grove in December?
How many days does it snow in December in Washington Grove?
What is the month with the shortest days in Washington Grove?
What is the average length of the day in December in Washington Grove?
When are sunrise and sunset in December in Washington Grove?
What are the months with the least sunshine in Washington Grove?
How long on average sun shines in December in Washington Grove?
When is the lowest UV index in Washington Grove?
How high is the UV index in December in Washington Grove?
Average temperature in December
Washington Grove, MD
- Average high temperature in December: 44.2°F
The warmest month (with the highest average high temperature) is July (86.9°F).
The month with the lowest average high temperature is January (38.8°F).
- Average low temperature in December: 32.2°F
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).
Average pressure in December
Washington Grove, 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
Washington Grove, MD
- Average wind speed in December: 7.1mph
The windiest month (with the highest average wind speed) is March (8mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in December
Washington Grove, MD
- Average humidity in December: 77%
The months with the highest relative humidity are May, October and December (77%).
The month with the lowest relative humidity is July (72%).
Average rainfall in December
Washington Grove, MD
- Average rainfall in December: 2.09"
The wettest month (with the highest rainfall) is August (3.82").
The driest month (with the least rainfall) is January (1.73").
Average rainfall days in December
Washington Grove, MD
- Average rainfall days in December: 10.5 days
The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is January (8.7 days).
Average snowfall in December
Washington Grove, MD
- Average snowfall in December: 1.38"
The month with the highest snowfall is January (2.76").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
Washington Grove, MD
- Average snowfall days in December: 2.5 days
The month with the highest number of snowfall days is February (5.3 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
Washington Grove, 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 48min).
The months with the least sunshine are January, February and December (Average sunshine: 5h and 6min).
Average sunshine days in December
Washington Grove, MD
- Average sunshine days in December: 18.4 days
The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is July (11.5 days).
Average UV index in December
Washington Grove, 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
Washington Grove, 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
Washington Grove, 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).
Washington Grove, Maryland, USA
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