December weather forecast
Hagerstown, MD

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Bright pink blossoms of flowers, clean paths, a bridge, and scenic trees in the neat lawns of a city park in Hagerstown, Maryland
Bright pink blossoms of flowers, clean paths, a bridge, and scenic trees in the neat lawns of a city park in Hagerstown, Maryland

Weather in December

December in Hagerstown is marked by the arrival of winter in full force. The picturesque snowfall increase from 0.59" (15mm) in November to 2.17" (55mm) in December, painting Hagerstown white. Chilly days bring along a festive mood to the city. Icy winds gust through the month, reinforcing the need for warm clothing. With the holiday season in full swing, the snow-covered city life and decorated streets add to the charm of Hagerstown.

Temperature

The onset of December introduces a moderate change in Hagerstown's weather, with average high-temperatures falling from November's fresh 50.7°F (10.4°C) to a wintry 41.5°F (5.3°C). In December, Hagerstown records an average nighttime temperature of 29.3°F (-1.5°C).

Humidity

In December, the average relative humidity is 78%.

Rainfall

In December, the rain falls for 11.2 days. Throughout December, 2.24" (57mm) of precipitation is accumulated. Throughout the year, in Hagerstown, Maryland, there are 164.7 rainfall days, and 29.17" (741mm) of precipitation is accumulated.

Snowfall

January through April, October through December are months with snowfall in Hagerstown. In December, in Hagerstown, it is snowing for 5.2 days. Throughout December, 2.17" (55mm) of snow is accumulated. Throughout the year, in Hagerstown, there are 28.6 snowfall days, and 14.65" (372mm) of snow is accumulated.

Daylight

December has the shortest days of the year in Hagerstown, with an average of 9h and 24min of daylight.
On the first day of December in Hagerstown, sunrise is at 7:13 am and sunset at 4:47 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 4:56 pm EST.

Sunshine

In Hagerstown, the average sunshine in December is 4.9h.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Hagerstown. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: A maximum high UV index of 2 in December translates into the following recommendations:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
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Frequently asked questions

Is December cold in Hagerstown?

During December, Hagerstown experiences an average high-temperature of 41.5°F (5.3°C) and a low-temperature of 29.3°F (-1.5°C). In August, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which combines air temperature and relative humidity, is estimated at 87.8°F (31°C).

What is the average humidity in December in Hagerstown?

The average relative humidity in December in Hagerstown is 78%.

How many days does it rain in December in Hagerstown?

In December, in Hagerstown, Maryland, the rain falls for 11.2 days. Throughout December, 2.24" (57mm) of precipitation is accumulated.

How much does it snow in Hagerstown in December?

In Hagerstown, during December, snow falls for 5.2 days and regularly aggregates up to 2.17" (55mm) of snow.

What is the month with the shortest days in Hagerstown?

With an average of 9h and 24min of daylight, December has the shortest days of the year in Hagerstown.

How many hours of daylight does Hagerstown have in December?

In December, the average day length is 9h and 25min.

When are sunrise and sunset in December in Hagerstown?

In December, on the first day of the month, sunrise is at 7:13 am and sunset at 4:47 pm. On the last day of the month, in Hagerstown, Maryland, sunrise is at 7:31 am and sunset at 4:56 pm EST.

How many hours of sunshine does Hagerstown have in December?

In Hagerstown, Maryland, the average sunshine duration in December is 4.9h.

What is the month with the lowest UV index in Hagerstown?

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

How high is the UV index in December in Hagerstown?

In Hagerstown, Maryland, the average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to UV radiation.
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
Hagerstown, MD

Average temperature in December - Hagerstown, MD
  • Average high temperature in December: 41.5°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 (36.1°F).

  • Average low temperature in December: 29.3°F

The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (22.8°F).

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Average pressure in December
Hagerstown, MD

Average pressure in December - Hagerstown, 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 (29.95"Hg).

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Average wind speed in December
Hagerstown, MD

Average wind speed in December - Hagerstown, MD
  • Average wind speed in December: 7mph

The windiest month (with the highest average wind speed) is January (7.7mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).

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Average humidity in December
Hagerstown, MD

Average humidity in December - Hagerstown, MD
  • Average humidity in December: 78%

The months with the highest relative humidity are May and October (79%).
The months with the lowest relative humidity are April and July (75%).

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Average rainfall in December
Hagerstown, MD

Average rainfall in December - Hagerstown, MD
  • Average rainfall in December: 2.24"

The wettest month (with the highest rainfall) is May (3.11").
The driest month (with the least rainfall) is February (1.97").

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Average rainfall days in December
Hagerstown, MD

Average rainfall days in December - Hagerstown, MD
  • Average rainfall days in December: 11.2 days

The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is January (8.8 days).

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Average snowfall in December
Hagerstown, MD

Average snowfall in December - Hagerstown, MD
  • Average snowfall in December: 2.17"

The month with the highest snowfall is January (4.21").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in December
Hagerstown, MD

Average snowfall days in December - Hagerstown, MD
  • Average snowfall days in December: 5.2 days

The month with the highest number of snowfall days is January (9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in December /
Average sunshine in December
Hagerstown, MD

Average daylight in December / Average sunshine in December - Hagerstown, 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: 4h and 5min

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 42min).

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Average sunshine days in December
Hagerstown, MD

Average sunshine days in December - Hagerstown, MD
  • Average sunshine days in December: 16.3 days

The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is May (10.7 days).

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Average UV index in December
Hagerstown, MD

Average UV index in December - Hagerstown, MD
  • Average UV index in December: 2

The months with the highest UV index are May, June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in December
Hagerstown, MD

Average cloud cover in December - Hagerstown, MD
  • Average cloud cover in December: 49

The months with the most cloud cover are January, February, March and December (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 31).

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Average visibility in December
Hagerstown, MD

Average visibility in December - Hagerstown, MD
  • Average visibility in December: 6mi

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

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Hagerstown, Maryland, USA

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