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 into December, Harris Heights sees a gentle drop in the average high-temperature, transitioning from a fresh 53.6°F (12°C) to a chilly 45.5°F (7.5°C). Throughout December, Harris Heights witnesses a nighttime temperature average of 34.5°F (1.4°C).Humidity
In Harris Heights, the average relative humidity in December is 76%.Rainfall
In Harris Heights, during December, the rain falls for 10.4 days and regularly aggregates up to 2.32" (59mm) of precipitation. In Harris Heights, during the entire year, the rain falls for 157.2 days and collects up to 30.47" (774mm) of precipitation.Snowfall
Months with snowfall are January through March, November and December. In December, in Harris Heights, it is snowing for 2.1 days. Throughout December, 0.39" (10mm) of snow is accumulated. Throughout the year, in Harris Heights, there are 11.9 snowfall days, and 5.75" (146mm) 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, in Harris Heights, sunrise is at 7:25 am and sunset at 4:53 pm EST.
Sunshine
In December, the average sunshine is 5.2h.UV index
The months with the lowest UV index in Harris Heights are January, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: In December, a daily UV index of 2 turns into the following recommendations:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Frequently asked questions
What is the temperature in December in Harris Heights?
What is the average humidity in December in Harris Heights?
How much does it rain in Harris Heights in December?
How many days does it snow in December in Harris Heights?
What is the month with the shortest days in Harris Heights?
What is the average length of the day in December in Harris Heights?
What time are sunrise and sunset in December in Harris Heights?
How many hours of sunshine does Harris Heights have in December?
When is the lowest UV index in Harris Heights?
How high is the UV index in December in Harris Heights?
Average temperature in December
Harris Heights, MD
- Average high temperature in December: 45.5°F
The warmest month (with the highest average high temperature) is July (85.5°F).
The month with the lowest average high temperature is January (38.8°F).
- Average low temperature in December: 34.5°F
The month with the highest average low temperature is July (70.3°F).
The coldest month (with the lowest average low temperature) is January (27.7°F).
Average pressure in December
Harris Heights, 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
Harris Heights, MD
- Average wind speed in December: 8.5mph
The windiest months (with the highest average wind speed) are January, February and March (9.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).
Average humidity in December
Harris Heights, MD
- Average humidity in December: 76%
The month with the highest relative humidity is May (77%).
The months with the lowest relative humidity are March, April and July (72%).
Average rainfall in December
Harris Heights, MD
- Average rainfall in December: 2.32"
The wettest month (with the highest rainfall) is August (4.09").
The driest month (with the least rainfall) is January (1.81").
Average rainfall days in December
Harris Heights, MD
- Average rainfall days in December: 10.4 days
The month with the highest number of rainy days is May (18 days).
The months with the least rainy days are January and November (8.4 days).
Average snowfall in December
Harris Heights, MD
- Average snowfall in December: 0.39"
The month with the highest snowfall is January (2.09").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Harris Heights, MD
- Average snowfall days in December: 2.1 days
The month with the highest number of snowfall days is January (3.8 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
Harris Heights, 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
Harris Heights, MD
- Average sunshine days in December: 18.4 days
The month with the most sunshine days is November (19.9 days).
The months with the least sunshine days are May and July (10.8 days).
Average UV index in December
Harris Heights, 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
Harris Heights, MD
- Average cloud cover in December: 44
The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 29).
Average visibility in December
Harris Heights, 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).
Harris Heights, Maryland, USA
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