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
December's arrival aligns with a minor decrease in average high-temperatures, from November's fresh 53.8°F (12.1°C) to a chilly 45.5°F (7.5°C). During December, the temperature tends to dip to an average of 34.7°F (1.5°C) at night.Humidity
In Hillendale, Maryland, the average relative humidity in December is 75%.Rainfall
In Hillendale, in December, it is raining for 11.4 days, with typically 2.83" (72mm) of accumulated precipitation. In Hillendale, during the entire year, the rain falls for 155.7 days and collects up to 31.22" (793mm) of precipitation.Snowfall
Months with snowfall in Hillendale are January through April, November and December. In December, it is snowing for 2.4 days. Throughout December, 0.63" (16mm) of snow is accumulated. In Hillendale, during the entire year, snow falls for 14 days and aggregates up to 6.14" (156mm) 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 the month, sunrise is at 7:07 am and sunset at 4:44 pm. On the last day of December, in Hillendale, sunrise is at 7:25 am and sunset at 4:54 pm EST.
Sunshine
In December, the average sunshine 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 reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for average individuals.Note: A daily high UV index of 2 in December leads to these guidelines:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The solar radiation around mid-day is intense; avoid the Sun and stay safe. During bright days, sunglasses that offer UVA and UVB defense are recommended. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Frequently asked questions
What are the temperatures in Hillendale in December?
What is the average humidity in December in Hillendale?
How many days does it rain in December in Hillendale?
How many days does it snow in December in Hillendale?
What is the month with the shortest days in Hillendale?
What is the average length of the day in December in Hillendale?
What time are sunrise and sunset in December in Hillendale?
How long on average sun shines in December in Hillendale?
When is the lowest UV index in Hillendale?
What is the UV index intensity in December in Hillendale?
Average temperature in December
Hillendale, 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
Hillendale, 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
Hillendale, 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
Hillendale, 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
Hillendale, 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
Hillendale, 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
Hillendale, 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
Hillendale, 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
Hillendale, 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
Hillendale, 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
Hillendale, 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
Hillendale, 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
Hillendale, 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).
Hillendale, Maryland, USA
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