December weather forecast
Swanton, MD

Weather in December

December, the first month of the winter, in Swanton, is still a cold month, with average temperature varying between 38.3°F (3.5°C) and 26.8°F (-2.9°C).

Temperature

In Swanton, the average high-temperature marginally drops, from a frosty 46.9°F (8.3°C) in November, to a wintry 38.3°F (3.5°C). In Swanton, in December, the average low-temperature is 26.8°F (-2.9°C).

Humidity

In Swanton, Maryland, the average relative humidity is 84%.

Rainfall

In Swanton, Maryland,, during 12.3 rainfall days, 3.11" (79mm) of precipitation is typically accumulated. In Swanton, Maryland, during the entire year, the rain falls for 185.7 days and collects up to 35.39" (899mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Swanton. In Swanton, during December, snow falls for 13 days and regularly aggregates up to 6.26" (159mm) of snow. Throughout the year, there are 64.2 snowfall days, and 35.24" (895mm) of snow is accumulated.

Daylight

With an average of 9.4h of daylight, December has the shortest days of the year in Swanton.

Sunshine

In Swanton, Maryland, the average sunshine in December is 3.7h.

UV index

December is the month with the lowest UV index in Swanton, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low threat to health from the exposure to the Sun's UV radiation for average individuals.
Note: The average daily UV index of 1 transform into the following instructions:
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. 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. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the average humidity in December in Swanton?

In Swanton, Maryland, the average relative humidity in December is 84%.

How much does it rain in Swanton in December?

In Swanton, Maryland, during December, the rain falls for 12.3 days and regularly aggregates up to 3.11" (79mm) of precipitation.

How many days does it snow in December in Swanton?

In December, in Swanton, it is snowing for 13 days. Throughout December, 6.26" (159mm) of snow is accumulated.

What is the month with the shortest days in Swanton?

The month with the shortest days is December, with an average of 9.4h of daylight.

How many hours of daylight does Swanton have in December?

The average length of the day in December in Swanton, Maryland, is 9.4h.

How many hours of sunshine does Swanton have in December?

The average sunshine in December in Swanton is 3.7h.

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

December is the month with the lowest UV index in Swanton, Maryland, with an average maximum UV index of 1.

What is the UV index reading in December in Swanton?

In December, the average daily maximum UV index in Swanton, Maryland, is 1. A UV Index reading of 2, and below, represents a minimal hazard to health from the exposure to the Sun's UV radiation.

Average temperature in December
Swanton, MD

Average temperature in December - Swanton, MD
  • Average high temperature in December: 38.3°F

The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (32.5°F).

  • Average low temperature in December: 26.8°F

The month with the highest average low temperature is July (58.5°F).
The coldest month (with the lowest average low temperature) is January (19.6°F).

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Average pressure in December
Swanton, MD

Average pressure in December - Swanton, MD
  • Average pressure in December: 30.12"

The month with the highest atmospheric pressure is November (30.14").
The month with the lowest atmospheric pressure is June (29.96").

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Average wind speed in December
Swanton, MD

Average wind speed in December - Swanton, MD
  • Average wind speed in December: 8.2mph

The windiest months (with the highest average wind speed) are January and February (8.9mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).

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Average humidity in December
Swanton, MD

Average humidity in December - Swanton, MD
  • Average humidity in December: 84%

The month with the highest relative humidity is February (86%).
The month with the lowest relative humidity is July (78%).

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Average rainfall in December
Swanton, MD

Average rainfall in December - Swanton, MD
  • Average rainfall in December: 3.11"

The wettest month (with the highest rainfall) is May (3.9").
The driest month (with the least rainfall) is November (2.24").

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Average rainfall days in December
Swanton, MD

Average rainfall days in December - Swanton, MD
  • Average rainfall days in December: 12.3 days

The month with the highest number of rainy days is May (22.3 days).
The month with the least rainy days is February (9.3 days).

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Average snowfall in December
Swanton, MD

Average snowfall in December - Swanton, MD
  • Average snowfall in December: 6.26"

The month with the highest snowfall is February (7.6").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Swanton, MD

Average snowfall days in December - Swanton, MD
  • Average snowfall days in December: 13 days

The month with the highest number of snowfall days is January (15.1 days).
Months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Swanton, MD
  • Average daylight in December: 9.4h

The month with the longest days is June (Average daylight: 14.9h).
The month with the shortest days is December (Average daylight: 9.4h).

  • Average sunshine in December: 3.7h

The month with the most sunshine is August (Average sunshine: 9.8h).
The month with the least sunshine is January (Average sunshine: 3.5h).

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Average sunshine days in December
Swanton, MD

Average sunshine days in December - Swanton, MD
  • Average sunshine days in December: 11.2 days

The month with the most sunshine days is November (14.5 days).
The month with the least sunshine days is May (6.9 days).

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Average UV index in December
Swanton, MD

Average UV index in December - Swanton, MD
  • Average UV index in December: 1

Months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in December
Swanton, MD

Average cloud cover in December - Swanton, MD
  • Average cloud cover in December: 62

The month with the most cloud cover is January (Cloud cover 66).
Months with the least cloud cover are July and August (Cloud cover 40).

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Average visibility in December
Swanton, MD

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

Months with the highest visibility are March, April, May, June, July, August, October, November and December (5mi).
Months with the lowest visibility are January, February and September (4mi).

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