December weather forecast
Pleasant Hills, MD

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Weather in December

The first month of the winter, December, is still a chilly month in Pleasant Hills, Maryland, with temperature in the range of an average high of 43.7°F (6.5°C) and an average low of 32.2°F (0.1°C).

Temperature

Pleasant Hills's December weather features a mild decline in high-temperatures, reducing from a cool 52.9°F (11.6°C) in November to a frosty 43.7°F (6.5°C). Nighttime temperatures hover around an average low of 32.2°F (0.1°C) in December.

Humidity

In Pleasant Hills, the average relative humidity in December is 78%.

Rainfall

In Pleasant Hills, in December, it is raining for 9.8 days, with typically 2.76" (70mm) of accumulated precipitation. Throughout the year, there are 155.7 rainfall days, and 32.64" (829mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, November and December. In Pleasant Hills, in December, during 3.4 snowfall days, 1.38" (35mm) of snow is typically accumulated. In Pleasant Hills, during the entire year, snow falls for 19.9 days and aggregates up to 9.72" (247mm) of snow.

Daylight

December has the shortest days of the year, with an average of 9h and 24min of daylight.
On the first day of the month, sunrise is at 7:07 am and sunset at 4:42 pm. On the last day of December, in Pleasant Hills, sunrise is at 7:25 am and sunset at 4:52 pm EST.

Sunshine

In Pleasant Hills, the average sunshine in December is 5h.

UV index

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: In December, a daily maximum UV index of 2 leads to the following instructions:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. To cut down UV radiation exposure by about half, sport a wide-brim hat. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Updated: Jun 28, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is December?

The high-temperature, in December, in Pleasant Hills, records 43.7°F (6.5°C), while the low-temperature is 32.2°F (0.1°C). The average heat index (a.k.a. 'feels like', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, in August is appraised at 87.8°F (31°C).

What is the average humidity in December?

In December, the average relative humidity is 78%.

How many days does it rain in December?

In Pleasant Hills, in December, during 9.8 rainfall days, 2.76" (70mm) of precipitation is typically accumulated.

How much does it snow in December?

In Pleasant Hills, in December, snow falls for 3.4 days, with typically accumulated 1.38" (35mm) of snow.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 9h and 24min of daylight.

What is the average length of the day in December?

The average day length in December is 9h and 26min.

What time are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 7:07 am and sunset at 4:42 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 4:52 pm EST.

How many hours of sunshine does Pleasant Hills have in December?

The average sunshine duration in December is 5h.

What are the months with the lowest UV index?

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

What is the UV index intensity in December?

In Pleasant Hills, Maryland, the average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a low health risk from 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
Pleasant Hills, MD

Average temperature in December - Pleasant Hills, MD
  • Average high temperature in December: 43.7°F

The warmest month (with the highest average high temperature) is July (84.6°F).
The month with the lowest average high temperature is January (37.6°F).

  • Average low temperature in December: 32.2°F

The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (25.3°F).

Average pressure in December
Pleasant Hills, MD

Average pressure in December - Pleasant 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
Pleasant Hills, MD

Average wind speed in December - Pleasant Hills, MD
  • Average wind speed in December: 8.3mph

The windiest month (with the highest average wind speed) is March (9.1mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).

Average humidity in December
Pleasant Hills, MD

Average humidity in December - Pleasant Hills, MD
  • Average humidity in December: 78%

The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is April (74%).

Average rainfall in December
Pleasant Hills, MD

Average rainfall in December - Pleasant Hills, MD
  • Average rainfall in December: 2.76"

The wettest month (with the highest rainfall) is August (4.09").
The driest month (with the least rainfall) is February (2.09").

Average rainfall days in December
Pleasant Hills, MD

Average rainfall days in December - Pleasant Hills, MD
  • Average rainfall days in December: 9.8 days

The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is January (8.3 days).

Average snowfall in December
Pleasant Hills, MD

Average snowfall in December - Pleasant Hills, MD
  • Average snowfall in December: 1.38"

The month with the highest snowfall is March (2.87").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in December
Pleasant Hills, MD

Average snowfall days in December - Pleasant Hills, MD
  • Average snowfall days in December: 3.4 days

The months with the highest number of snowfall days are January and February (5.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Pleasant Hills, MD

Average daylight in December / Average sunshine in December - Pleasant Hills, MD
  • Average daylight in December: 9h and 2min

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 24min).

  • Average sunshine in December: 5h and 0min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

Average sunshine days in December
Pleasant Hills, MD

Average sunshine days in December - Pleasant Hills, MD
  • Average sunshine days in December: 17.8 days

The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is May (11.7 days).

Average UV index in December
Pleasant Hills, MD

Average UV index in December - Pleasant 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, February, November and December (UV index 2).

Average cloud cover in December
Pleasant Hills, MD

Average cloud cover in December - Pleasant Hills, MD
  • Average cloud cover in December: 46

The month with the most cloud cover is March (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 31).

Average visibility in December
Pleasant Hills, MD

Average visibility in December - Pleasant Hills, MD
  • Average visibility in December: 6mi

The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).

Pleasant Hills, Maryland, USA

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