December weather forecast
Rohrersville, MD

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Weather in December

The first month of the winter, December, is also an icy month in Rohrersville, Maryland, with temperature in the range of an average low of 30.2°F (-1°C) and an average high of 42.3°F (5.7°C).

Temperature

With December's onset, the average high-temperature recedes from November's cool 51.6°F (10.9°C) to an icy 42.3°F (5.7°C). Throughout December nights, Rohrersville experiences a consistent temperature average of 30.2°F (-1°C).

Humidity

May, October and December, with an average relative humidity of 79%, are the most humid months.

Rainfall

In Rohrersville, in December, it is raining for 10.8 days, with typically 2.2" (56mm) of accumulated precipitation. Throughout the year, there are 162.4 rainfall days, and 30.16" (766mm) of precipitation is accumulated.

Snowfall

January through April, October through December are months with snowfall. In Rohrersville, Maryland, in December, during 4.5 snowfall days, 2.09" (53mm) of snow is typically accumulated. In Rohrersville, during the entire year, snow falls for 24.4 days and aggregates up to 14.29" (363mm) of snow.

Daylight

The month with the shortest days is December, with an average of 9h and 24min of daylight.
On the first day of December, sunrise is at 7:12 am and sunset at 4:47 pm. On the last day of the month, sunrise is at 7:30 am and sunset at 4:57 pm EST.

Sunshine

In Rohrersville, the average sunshine in December is 4.8h.

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 reading of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for the average person.
Note: The maximum daily UV index of 2 in December interprets into the following recommendations:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.

Frequently asked questions

How cold is December?

In Rohrersville, in December, the average high-temperature is 42.3°F (5.7°C), and the average low-temperature is 30.2°F (-1°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, in August is appraised at 91.4°F (33°C).

What is the most humid month?

The months with the highest humidity in Rohrersville are May, October and December, with an average relative humidity of 79%.

What is the average humidity in December in Rohrersville?

The average relative humidity in December is 79%.

How many days does it rain in December?

In Rohrersville, in December, it is raining for 10.8 days, with typically 2.2" (56mm) of accumulated precipitation.

How many days does it snow in December?

In Rohrersville, in December, during 4.5 snowfall days, 2.09" (53mm) of snow is typically accumulated.

What is the month with the shortest days?

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

How many hours of daylight does Rohrersville have in December?

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

When is the sunrise / sunset in December?

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, sunrise is at 7:30 am and sunset at 4:57 pm EST.

How many hours of sunshine does Rohrersville have in December?

In December, the average sunshine duration is 4.8h.

What is the month 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.

How high is the UV index in December?

In Rohrersville, the average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a minimal hazard to health 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
Rohrersville, MD

Average temperature in December - Rohrersville, MD
  • Average high temperature in December: 42.3°F

The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (37°F).

  • Average low temperature in December: 30.2°F

The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).

Average pressure in December
Rohrersville, MD

Average pressure in December - Rohrersville, 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).

Average wind speed in December
Rohrersville, MD

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

The windiest months (with the highest average wind speed) are January, February and March (7.6mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).

Average humidity in December
Rohrersville, MD

Average humidity in December - Rohrersville, MD
  • Average humidity in December: 79%

The months with the highest relative humidity are May, October and December (79%).
The month with the lowest relative humidity is July (74%).

Average rainfall in December
Rohrersville, MD

Average rainfall in December - Rohrersville, MD
  • Average rainfall in December: 2.2"

The wettest month (with the highest rainfall) is July (3.27").
The driest month (with the least rainfall) is January (1.97").

Average rainfall days in December
Rohrersville, MD

Average rainfall days in December - Rohrersville, MD
  • Average rainfall days in December: 10.8 days

The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is November (9.4 days).

Average snowfall in December
Rohrersville, MD

Average snowfall in December - Rohrersville, MD
  • Average snowfall in December: 2.09"

The month with the highest snowfall is January (4.72").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in December
Rohrersville, MD

Average snowfall days in December - Rohrersville, MD
  • Average snowfall days in December: 4.5 days

The month with the highest number of snowfall days is January (7.8 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
Rohrersville, MD

Average daylight in December / Average sunshine in December - Rohrersville, 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).

Average sunshine days in December
Rohrersville, MD

Average sunshine days in December - Rohrersville, MD
  • Average sunshine days in December: 16.4 days

The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is April (11 days).

Average UV index in December
Rohrersville, MD

Average UV index in December - Rohrersville, 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
Rohrersville, MD

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

The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 32).

Average visibility in December
Rohrersville, MD

Average visibility in December - Rohrersville, MD
  • Average visibility in December: 5mi

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

Rohrersville, Maryland, USA

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