December weather forecast
Reisterstown, MD

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Weather in December

The first month of the winter, December, is still a chilly month in Reisterstown, Maryland, with temperature in the range of an average high of 43.3°F (6.3°C) and an average low of 31.3°F (-0.4°C).

Temperature

The transition to December results in a modest reduction in average high-temperature, moving from a cool 51.8°F (11°C) in November to a frosty 43.3°F (6.3°C). Throughout the month of December, Reisterstown witnesses an average low-temperature of 31.3°F (-0.4°C).

Humidity

In December, the average relative humidity is 78%.

Rainfall

In December, the rain falls for 10.3 days. Throughout December, 2.44" (62mm) of precipitation is accumulated. In Reisterstown, during the entire year, the rain falls for 158.9 days and collects up to 31.38" (797mm) of precipitation.

Snowfall

Months with snowfall are January through April, October through December. In Reisterstown, during December, snow falls for 3.9 days and regularly aggregates up to 1.69" (43mm) of snow. Throughout the year, there are 21.2 snowfall days, and 10.55" (268mm) of snow is accumulated.

Daylight

With an average of 9h and 24min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 7:09 am and sunset at 4:44 pm. On the last day of December, sunrise is at 7:27 am and sunset at 4:53 pm EST.

Sunshine

In December, the average sunshine 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 hazard from exposure to the Sun's UV rays for the average person.
Note: In December, a daily maximum UV index of 2 leads to the following instructions:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. To guard against the harmful effects of the Sun, minimize exposure during midday. 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. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.

Frequently asked questions

Is December cold?

Reisterstown in December has an average high-temperature of 43.3°F (6.3°C) and an average low-temperature of 31.3°F (-0.4°C). In August, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, is computed to be 89.6°F (32°C).

What is the average humidity in December?

The average relative humidity in December is 78%.

How much does it rain in December?

In December, the rain falls for 10.3 days. Throughout December, 2.44" (62mm) of precipitation is accumulated.

How much does it snow in December?

In Reisterstown, in December, snow falls for 3.9 days, with typically accumulated 1.69" (43mm) 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?

In Reisterstown, the average day length in December is 9h and 26min.

When are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 7:09 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 4:53 pm EST.

How many hours of sunshine does Reisterstown have in December?

In Reisterstown, the average sunshine duration in December is 5h.

What is the month with the lowest UV index?

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

What is the UV index reading in December in Reisterstown?

In December, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's 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
Reisterstown, MD

Average temperature in December - Reisterstown, MD
  • Average high temperature in December: 43.3°F

The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (37.4°F).

  • Average low temperature in December: 31.3°F

The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (24.8°F).

Average pressure in December
Reisterstown, MD

Average pressure in December - Reisterstown, 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
Reisterstown, MD

Average wind speed in December - Reisterstown, MD
  • Average wind speed in December: 8.1mph

The windiest month (with the highest average wind speed) is March (8.9mph).
The calmest months (with the lowest average wind speed) are July and August (5.3mph).

Average humidity in December
Reisterstown, MD

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

The month with the highest relative humidity is May (80%).
The months with the lowest relative humidity are January, March, April, July and November (75%).

Average rainfall in December
Reisterstown, MD

Average rainfall in December - Reisterstown, MD
  • Average rainfall in December: 2.44"

The wettest month (with the highest rainfall) is August (3.86").
The driest month (with the least rainfall) is February (1.89").

Average rainfall days in December
Reisterstown, MD

Average rainfall days in December - Reisterstown, MD
  • Average rainfall days in December: 10.3 days

The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is January (8.3 days).

Average snowfall in December
Reisterstown, MD

Average snowfall in December - Reisterstown, MD
  • Average snowfall in December: 1.69"

The month with the highest snowfall is March (3.46").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in December
Reisterstown, MD

Average snowfall days in December - Reisterstown, MD
  • Average snowfall days in December: 3.9 days

The month with the highest number of snowfall days is January (6.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Reisterstown, 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 42min).

Average sunshine days in December
Reisterstown, MD

Average sunshine days in December - Reisterstown, MD
  • Average sunshine days in December: 17.5 days

The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is May (11.2 days).

Average UV index in December
Reisterstown, MD

Average UV index in December - Reisterstown, 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
Reisterstown, MD

Average cloud cover in December - Reisterstown, MD
  • Average cloud cover in December: 47

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
Reisterstown, MD

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

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

Reisterstown, Maryland, USA

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