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
Hillandale's weather in December involves a mild decrease in the average high-temperature, moving down slightly from November's fresh 53.2°F (11.8°C) to a frosty 45.3°F (7.4°C). During December, Hillandale consistently records a temperature low averaging a wintry 33.1°F (0.6°C).Humidity
May, October and December, with an average relative humidity of 76%, are the most humid months.Rainfall
In Hillandale, in December, during 9.9 rainfall days, 2.56" (65mm) of precipitation is typically accumulated. In Hillandale, during the entire year, the rain falls for 155.7 days and collects up to 31.42" (798mm) of precipitation.Snowfall
January through April, November and December are months with snowfall. In Hillandale, Maryland, in December, during 3.5 snowfall days, 1.38" (35mm) of snow is typically accumulated. In Hillandale, during the entire year, snow falls for 17.8 days and aggregates up to 9.21" (234mm) of snow.Daylight
With an average of 9h and 30min of daylight, December has the shortest days of the year in Hillandale.On the first day of the month, sunrise is at 7:08 am and sunset at 4:45 pm. On the last day of December, sunrise is at 7:26 am and sunset at 4:55 pm EST.
Sunshine
In December, the average sunshine is 5.1h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The daily high UV index of 2 in December translates into this advice:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Frequently asked questions
What are the temperatures in Hillandale in December?
What is the most humid month in Hillandale?
What is the average humidity in December in Hillandale?
How many days does it rain in December in Hillandale?
How much does it snow in Hillandale in December?
What is the month with the shortest days in Hillandale?
How many hours of daylight does Hillandale have in December?
What time are sunrise and sunset in December in Hillandale?
How long on average sun shines in December in Hillandale?
What is the month with the lowest UV index in Hillandale?
What is the UV index reading in December in Hillandale?
Average temperature in December
Hillandale, MD
- Average high temperature in December: 45.3°F
The warmest month (with the highest average high temperature) is July (87.3°F).
The month with the lowest average high temperature is January (39°F).
- Average low temperature in December: 33.1°F
The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (26.8°F).
Average pressure in December
Hillandale, 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
Hillandale, MD
- Average wind speed in December: 7.3mph
The windiest month (with the highest average wind speed) is March (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in December
Hillandale, MD
- Average humidity in December: 76%
The months with the highest relative humidity are May, October and December (76%).
The month with the lowest relative humidity is July (70%).
Average rainfall in December
Hillandale, MD
- Average rainfall in December: 2.56"
The wettest month (with the highest rainfall) is August (4.02").
The driest months (with the least rainfall) are January and February (2.01").
Average rainfall days in December
Hillandale, MD
- Average rainfall days in December: 9.9 days
The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is November (9 days).
Average snowfall in December
Hillandale, MD
- Average snowfall in December: 1.38"
The month with the highest snowfall is March (2.95").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Hillandale, MD
- Average snowfall days in December: 3.5 days
The month with the highest number of snowfall days is January (5.4 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
Hillandale, 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: 5h and 0min).
Average sunshine days in December
Hillandale, MD
- Average sunshine days in December: 18.1 days
The month with the most sunshine days is November (19.2 days).
The month with the least sunshine days is May (11.7 days).
Average UV index in December
Hillandale, 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
Hillandale, MD
- Average cloud cover in December: 46
The months with the most cloud cover are March and December (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in December
Hillandale, 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).
Hillandale, Maryland, USA
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