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 start of December comes with a small reduction in the average high-temperature, subtly receding from a cool 52.3°F (11.3°C) in November to a chilly 43.5°F (6.4°C). In December, the temperature drops to an average of 31.1°F (-0.5°C) at night.Humidity
In Ronalee Hills, the average relative humidity in December is 78%.Rainfall
In December, in Ronalee Hills, the rain falls for 10.4 days. Throughout December, 2.24" (57mm) of precipitation is accumulated. Throughout the year, there are 158.7 rainfall days, and 30.91" (785mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Ronalee Hills, in December, snow falls for 3.5 days, with typically accumulated 2.01" (51mm) of snow. In Ronalee Hills, during the entire year, snow falls for 21.3 days and aggregates up to 13.31" (338mm) of snow.Daylight
With an average of 9h and 30min of daylight, December has the shortest days of the year in Ronalee Hills.On the first day of December, sunrise is at 7:09 am and sunset at 4:46 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 4:55 pm EST.
Sunshine
In Ronalee Hills, the average sunshine in December is 5.1h.UV index
The months with the lowest UV index in Ronalee Hills are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for average individuals.Note: The maximum daily UV index, 2 in December, converts into the following recommendations:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Frequently asked questions
How cold does it get in Ronalee Hills in December?
What is the average humidity in December in Ronalee Hills?
How much does it rain in Ronalee Hills in December?
How many days does it snow in December in Ronalee Hills?
What is the month with the shortest days in Ronalee Hills?
What is the average length of the day in December in Ronalee Hills?
When is the sunrise / sunset in December in Ronalee Hills?
How long on average sun shines in December in Ronalee Hills?
What is the month with the lowest UV index in Ronalee Hills?
What is the UV index reading in December in Ronalee Hills?
Average temperature in December
Ronalee Hills, MD
- Average high temperature in December: 43.5°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (37.8°F).
- Average low temperature in December: 31.1°F
The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (24.8°F).
Average pressure in December
Ronalee Hills, 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
Ronalee Hills, MD
- Average wind speed in December: 7.3mph
The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in December
Ronalee Hills, MD
- Average humidity in December: 78%
The months with the highest relative humidity are May and October (79%).
The months with the lowest relative humidity are April and July (74%).
Average rainfall in December
Ronalee Hills, MD
- Average rainfall in December: 2.24"
The wettest month (with the highest rainfall) is August (3.82").
The driest month (with the least rainfall) is January (1.93").
Average rainfall days in December
Ronalee Hills, 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 January (8.3 days).
Average snowfall in December
Ronalee Hills, MD
- Average snowfall in December: 2.01"
The month with the highest snowfall is March (4.09").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Ronalee Hills, MD
- Average snowfall days in December: 3.5 days
The month with the highest number of snowfall days is January (6.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Ronalee Hills, 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 month with the least sunshine is February (Average sunshine: 4h and 54min).
Average sunshine days in December
Ronalee Hills, MD
- Average sunshine days in December: 17.6 days
The month with the most sunshine days is November (19.3 days).
The month with the least sunshine days is May (10.8 days).
Average UV index in December
Ronalee Hills, 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
Ronalee Hills, MD
- Average cloud cover in December: 45
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in December
Ronalee Hills, 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).
Ronalee Hills, Maryland, USA
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