December weather forecast
Hagerstown, MD

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

The first month of the winter, December, is still a cold month in Hagerstown, Maryland, with an average temperature fluctuating between 29.3°F (-1.5°C) and 41.5°F (5.3°C).

Temperature

In Hagerstown, the average high-temperature in December drops from a cool 50.7°F (10.4°C) in November to a cold 41.5°F (5.3°C). In December, in Hagerstown, the average low-temperature is 29.3°F (-1.5°C).

Humidity

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

Rainfall

In Hagerstown, during 11.2 rainfall days, 2.24" (57mm) of precipitation is typically accumulated. In Hagerstown, during the entire year, the rain falls for 164.7 days and collects up to 29.17" (741mm) of precipitation.

Snowfall

Months with snowfall in Hagerstown are January through April, October through December. In Hagerstown, in December, snow falls for 5.2 days, with typically accumulated 2.17" (55mm) of snow. In Hagerstown, Maryland, during the entire year, snow falls for 28.6 days and aggregates up to 14.65" (372mm) of snow.

Daylight

The month with the shortest days in Hagerstown is December, with an average of 9h and 25min of daylight.
On the first day of the month, sunrise is at 7:12 am and sunset at 4:47 pm. On the last day of December, in Hagerstown, 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

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In December, the average maximum UV index of 2 translate into the following recommendations:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the temperature in December in Hagerstown?

The average high-temperature, in December, in Hagerstown, is 41.5°F (5.3°C), while the average low-temperature is 29.3°F (-1.5°C). in August, the average heat index (a.k.a. 'real feel', 'feels like'), which represents the influence of relative humidity on air temperature, is appraised at 87.8°F (31°C).

What is the average humidity in December in Hagerstown?

In December, the average relative humidity is 78%.

How much does it rain in Hagerstown in December?

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

How many days does it snow in December in Hagerstown?

In December, it is snowing for 5.2 days. Throughout December, 2.17" (55mm) of snow is accumulated.

What is the month with the shortest days in Hagerstown?

With an average of 9h and 25min of daylight, December has the shortest days of the year.

What is the average length of the day in December in Hagerstown?

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

What time are sunrise and sunset in December in Hagerstown?

In December, on the first day of the month, sunrise is at 7:12 am and sunset at 4:47 pm. On the last day of the month, in Hagerstown, sunrise is at 7:31 am and sunset at 4:56 pm EST.

How long on average sun shines in December in Hagerstown?

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

What are the months with the lowest UV index in Hagerstown?

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

How high is the UV index in December in Hagerstown?

The average daily maximum UV index in December in Hagerstown is 2. A UV Index of 2, and less, symbolizes a low health threat 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 25min

The month with the longest days is June (Average daylight: 14h and 56min).
The month with the shortest days is December (Average daylight: 9h and 25min).

  • Average sunshine in December: 4h and 54min

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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