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 November transitions to December, the average high-temperature falls from a cool 52.9°F (11.6°C) to a frosty 43.7°F (6.5°C). The average temperature in Forest Hill during December nights dips to a cold 32.2°F (0.1°C).Humidity
The average relative humidity in December in Forest Hill is 78%.Rainfall
In Forest Hill, in December, during 9.8 rainfall days, 2.76" (70mm) of precipitation is typically accumulated. In Forest Hill, during the entire year, the rain falls for 155.7 days and collects up to 32.64" (829mm) of precipitation.Snowfall
January through May, November and December are months with snowfall in Forest Hill. In Forest Hill, in December, during 3.4 snowfall days, 1.38" (35mm) of snow is typically accumulated. Throughout the year, in Forest Hill, there are 19.9 snowfall days, and 9.72" (247mm) of snow is accumulated.Daylight
With an average of 9h and 24min of daylight, December has the shortest days of the year in Forest Hill.On the first day of the month, sunrise is at 7:07 am and sunset at 4:42 pm. On the last day of December, sunrise is at 7:26 am and sunset at 4:51 pm EST.
Sunshine
The average sunshine in December in Forest Hill is 5h.UV index
The months with the lowest UV index in Forest Hill are January, February, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: An average maximum UV index of 2 in December leads to these recommendations:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Frequently asked questions
How cold is it in Forest Hill in December?
What is the average humidity in December in Forest Hill?
How many days does it rain in December in Forest Hill?
How many days does it snow in December in Forest Hill?
What is the month with the shortest days in Forest Hill?
How many hours of daylight does Forest Hill have in December?
When is the sunrise / sunset in December in Forest Hill?
How many hours of sunshine does Forest Hill have in December?
What are the months with the lowest UV index in Forest Hill?
How high is the UV index in December in Forest Hill?
Average temperature in December
Forest Hill, MD
- Average high temperature in December: 43.7°F
The warmest month (with the highest average high temperature) is July (84.6°F).
The month with the lowest average high temperature is January (37.6°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 (25.3°F).
Average pressure in December
Forest Hill, 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 (29.94"Hg).
Average wind speed in December
Forest Hill, MD
- Average wind speed in December: 8.3mph
The windiest month (with the highest average wind speed) is March (9.1mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).
Average humidity in December
Forest Hill, MD
- Average humidity in December: 78%
The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is April (74%).
Average rainfall in December
Forest Hill, MD
- Average rainfall in December: 2.76"
The wettest month (with the highest rainfall) is August (4.09").
The driest month (with the least rainfall) is February (2.09").
Average rainfall days in December
Forest Hill, MD
- Average rainfall days in December: 9.8 days
The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is January (8.3 days).
Average snowfall in December
Forest Hill, MD
- Average snowfall in December: 1.38"
The month with the highest snowfall is March (2.87").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
Forest Hill, MD
- Average snowfall days in December: 3.4 days
The months with the highest number of snowfall days are January and February (5.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Forest Hill, 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: 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 48min).
Average sunshine days in December
Forest Hill, MD
- Average sunshine days in December: 17.8 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is May (11.7 days).
Average UV index in December
Forest Hill, 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
Forest Hill, MD
- Average cloud cover in December: 46
The month with the most cloud cover is March (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in December
Forest Hill, 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).
Forest Hill, Maryland, USA
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