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
With December's onset, the weather reveals a slight temperature decrease, transitioning from a fresh 53.8°F (12.1°C) in November to a chilly 45.5°F (7.5°C). During December, Chatham Hills experiences a consistent low-temperature average of 34.7°F (1.5°C).Humidity
In December, the average relative humidity is 75%.Rainfall
In Chatham Hills, in December, it is raining for 11.4 days, with typically 2.83" (72mm) of accumulated precipitation. Throughout the year, there are 155.7 rainfall days, and 31.22" (793mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, November and December. In Chatham Hills, in December, during 2.4 snowfall days, 0.63" (16mm) of snow is typically accumulated. Throughout the year, there are 14 snowfall days, and 6.14" (156mm) of snow is accumulated.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 7:07 am and sunset at 4:44 pm. On the last day of December, sunrise is at 7:25 am and sunset at 4:54 pm EST.
Sunshine
The average sunshine in December in Chatham Hills is 5.2h.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 of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: An average maximum UV index of 2 in December leads to these recommendations:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. To cut down UV radiation exposure by about half, sport a wide-brim hat. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
Frequently asked questions
What is the usual temperature for Chatham Hills in December?
What is the average humidity in December in Chatham Hills?
How much does it rain in Chatham Hills in December?
How many days does it snow in December in Chatham Hills?
What is the month with the shortest days in Chatham Hills?
How many hours of daylight does Chatham Hills have in December?
When are sunrise and sunset in December in Chatham Hills?
How many hours of sunshine does Chatham Hills have in December?
What are the months with the lowest UV index in Chatham Hills?
What is the UV index intensity in December in Chatham Hills?
Average temperature in December
Chatham Hills, MD
- Average high temperature in December: 45.5°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 (39.6°F).
- Average low temperature in December: 34.7°F
The month with the highest average low temperature is July (70.7°F).
The coldest month (with the lowest average low temperature) is January (28.4°F).
Average pressure in December
Chatham 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 (29.94"Hg).
Average wind speed in December
Chatham Hills, MD
- Average wind speed in December: 8.6mph
The windiest month (with the highest average wind speed) is March (9.4mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity in December
Chatham Hills, MD
- Average humidity in December: 75%
The month with the highest relative humidity is May (78%).
The months with the lowest relative humidity are January, March, April and November (72%).
Average rainfall in December
Chatham Hills, MD
- Average rainfall in December: 2.83"
The wettest month (with the highest rainfall) is August (3.54").
The driest month (with the least rainfall) is September (1.89").
Average rainfall days in December
Chatham Hills, MD
- Average rainfall days in December: 11.4 days
The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is November (9.4 days).
Average snowfall in December
Chatham Hills, MD
- Average snowfall in December: 0.63"
The month with the highest snowfall is January (2.05").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Chatham Hills, MD
- Average snowfall days in December: 2.4 days
The month with the highest number of snowfall days is January (4.4 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
Chatham 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 54min).
The month with the least sunshine is February (Average sunshine: 5h and 6min).
Average sunshine days in December
Chatham Hills, MD
- Average sunshine days in December: 16.9 days
The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is May (10.8 days).
Average UV index in December
Chatham 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, November and December (UV index 2).
Average cloud cover in December
Chatham Hills, MD
- Average cloud cover in December: 44
The months with the most cloud cover are February and March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility in December
Chatham Hills, MD
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Chatham Hills, Maryland, USA
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