December weather forecast
Persimmon Hills, MD

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Weather in December

December, the first month of the winter in Persimmon Hills, is also a frosty month, with temperature in the range of an average low of 36.5°F (2.5°C) and an average high of 46.4°F (8°C).

Temperature

December's arrival aligns with a minor decrease in average high-temperatures, from November's cool 54.7°F (12.6°C) to a chilly 46.4°F (8°C). In Persimmon Hills, in December, the average low-temperature is a cold 36.5°F (2.5°C).

Humidity

The average relative humidity in December is 75%.

Rainfall

In Persimmon Hills, in December, it is raining for 8.4 days, with typically 0.91" (23mm) of accumulated precipitation. Throughout the year, there are 132.3 rainfall days, and 15.83" (402mm) of precipitation is accumulated.

Snowfall

January through March, November and December are months with snowfall. In December, it is snowing for 1.6 days. Throughout December, 0.28" (7mm) of snow is accumulated. In Persimmon Hills, during the entire year, snow falls for 9.4 days and aggregates up to 1.97" (50mm) of snow.

Daylight

December has the shortest days of the year, with an average of 9h and 30min of daylight.
On the first day of the month, sunrise is at 7:06 am and sunset at 4:45 pm. On the last day of December, sunrise is at 7:24 am and sunset at 4:55 pm EST.

Sunshine

In December, the average sunshine is 5.2h.

UV index

January 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 minimal health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: In December, the maximum UV index of 2 translates into these guidelines:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. When the Sun is at its strongest around midday, find shade and limit exposure. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.

Frequently asked questions

What is the temperature in December?

The average high-temperature, in December, in Persimmon Hills, is 46.4°F (8°C), while the average low-temperature is 36.5°F (2.5°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which factors the actual air temperature with the relative humidity, in August is appraised at 89.6°F (32°C).

What is the average humidity in December?

In December, the average relative humidity is 75%.

How many days does it rain in December?

In Persimmon Hills, during December, the rain falls for 8.4 days and regularly aggregates up to 0.91" (23mm) of precipitation.

How many days does it snow in December in Persimmon Hills?

In December, it is snowing for 1.6 days. Throughout December, 0.28" (7mm) of snow is accumulated.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 9h and 30min of daylight.

How many hours of daylight does Persimmon Hills have in December?

In Persimmon Hills, the average day length in December is 9h and 31min.

When are sunrise and sunset in December?

On the first day of December, sunrise is at 7:06 am and sunset at 4:45 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 4:55 pm EST.

How long on average sun shines in December?

In Persimmon Hills, Maryland, the average sunshine duration in December is 5.2h.

What are the months with the lowest UV index?

January and December, with an average maximum UV index of 2, are months with the lowest UV index.

What is the UV index intensity in December?

In December, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a low health threat from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Persimmon Hills, MD

Average temperature in December - Persimmon Hills, 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 (40.6°F).

  • Average low temperature in December: 36.5°F

The month with the highest average low temperature is July (71.6°F).
The coldest month (with the lowest average low temperature) is January (30.2°F).

Average pressure in December
Persimmon Hills, MD

Average pressure in December - Persimmon Hills, 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
Persimmon Hills, MD

Average wind speed in December - Persimmon Hills, MD
  • Average wind speed in December: 9.2mph

The windiest months (with the highest average wind speed) are January and March (9.9mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).

Average humidity in December
Persimmon Hills, MD

Average humidity in December - Persimmon Hills, MD
  • Average humidity in December: 75%

The month with the highest relative humidity is May (79%).
The months with the lowest relative humidity are January and November (72%).

Average rainfall in December
Persimmon Hills, MD

Average rainfall in December - Persimmon Hills, MD
  • Average rainfall in December: 0.91"

The wettest month (with the highest rainfall) is August (2.4").
The driest month (with the least rainfall) is January (0.67").

Average rainfall days in December
Persimmon Hills, MD

Average rainfall days in December - Persimmon Hills, MD
  • Average rainfall days in December: 8.4 days

The month with the highest number of rainy days is July (15.3 days).
The month with the least rainy days is November (6.6 days).

Average snowfall in December
Persimmon Hills, MD

Average snowfall in December - Persimmon Hills, MD
  • Average snowfall in December: 0.28"

The month with the highest snowfall is January (0.75").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in December
Persimmon Hills, MD

Average snowfall days in December - Persimmon Hills, MD
  • Average snowfall days in December: 1.6 days

The month with the highest number of snowfall days is January (2.9 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
Persimmon Hills, MD

Average daylight in December / Average sunshine in December - Persimmon Hills, 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 month with the least sunshine is February (Average sunshine: 5h and 6min).

Average sunshine days in December
Persimmon Hills, MD

Average sunshine days in December - Persimmon Hills, MD
  • Average sunshine days in December: 19.9 days

The month with the most sunshine days is November (21.7 days).
The month with the least sunshine days is August (13.7 days).

Average UV index in December
Persimmon Hills, MD

Average UV index in December - Persimmon 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 and December (UV index 2).

Average cloud cover in December
Persimmon Hills, MD

Average cloud cover in December - Persimmon Hills, 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
Persimmon Hills, MD

Average visibility in December - Persimmon 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).

Persimmon Hills, Maryland, USA

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