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 onset of December brings a small shift in high-temperatures, falling from a cool 54.5°F (12.5°C) in November to a frosty 46.4°F (8°C). In the month of December, Harwood experiences an average low-temperature of 36.5°F (2.5°C).Humidity
In December, the average relative humidity in Harwood is 75%.Rainfall
In Harwood, in December, it is raining for 7.5 days, with typically 0.67" (17mm) of accumulated precipitation. In Harwood, during the entire year, the rain falls for 127.2 days and collects up to 11.85" (301mm) of precipitation.Snowfall
Months with snowfall are January through March, November and December. In Harwood, in December, during 1.4 snowfall days, 0.16" (4mm) of snow is typically accumulated. In Harwood, during the entire year, snow falls for 8 days and aggregates up to 1.22" (31mm) of snow.Daylight
With an average of 9h and 30min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:06 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 4:54 pm EST.
Sunshine
The months with the least sunshine are February and December, with an average of 5.2h of sunshine.UV index
January, February 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 low threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum daily UV index of 2 during December translates into the following directions:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in December?
What is the average humidity in December?
How much does it rain in Harwood in December?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Harwood have in December?
What time are sunrise and sunset in December in Harwood?
What is the month with the least sunshine?
How long on average sun shines in December in Harwood?
What are the months with the lowest UV index?
How high is the UV index in December?
Average temperature in December
Harwood, MD
- Average high temperature in December: 46.4°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (40.5°F).
- Average low temperature in December: 36.5°F
The month with the highest average low temperature is July (71.2°F).
The coldest month (with the lowest average low temperature) is January (30°F).
Average pressure in December
Harwood, 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
Harwood, MD
- Average wind speed in December: 8.9mph
The windiest month (with the highest average wind speed) is March (9.8mph).
The calmest month (with the lowest average wind speed) is July (6.4mph).
Average humidity in December
Harwood, 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 and November (72%).
Average rainfall in December
Harwood, MD
- Average rainfall in December: 0.67"
The wettest month (with the highest rainfall) is August (1.93").
The driest month (with the least rainfall) is January (0.51").
Average rainfall days in December
Harwood, MD
- Average rainfall days in December: 7.5 days
The month with the highest number of rainy days is August (15.6 days).
The month with the least rainy days is November (5.9 days).
Average snowfall in December
Harwood, MD
- Average snowfall in December: 0.16"
The month with the highest snowfall is January (0.55").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Harwood, MD
- Average snowfall days in December: 1.4 days
The month with the highest number of snowfall days is January (2.6 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Harwood, MD
- Average daylight in December: 9h and 3min
The month with the longest days is June (Average daylight: 14h and 48min).
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 months with the least sunshine are February and December (Average sunshine: 5h and 12min).
Average sunshine days in December
Harwood, MD
- Average sunshine days in December: 21 days
The month with the most sunshine days is November (22.6 days).
The month with the least sunshine days is August (12.5 days).
Average UV index in December
Harwood, 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 and December (UV index 2).
Average cloud cover in December
Harwood, MD
- Average cloud cover in December: 43
The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in December
Harwood, 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).
Harwood, Maryland, USA
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