December weather forecast
Wilmers, MD

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Weather in December

The first month of the winter, December, is still a chilly month in Wilmers, Maryland, with an average temperature fluctuating between 45.5°F (7.5°C) and 34.5°F (1.4°C).

Temperature

The transition into December subtly indicates a reduction in the average high-temperature, down to a chilly 45.5°F (7.5°C) from November's fresh 54°F (12.2°C). December nights in Wilmers are marked by an average temperature drop to a cold 34.5°F (1.4°C).

Humidity

In December, the average relative humidity is 76%.

Rainfall

In Wilmers, in December, during 7.3 rainfall days, 0.98" (25mm) of precipitation is typically accumulated. In Wilmers, during the entire year, the rain falls for 107.5 days and collects up to 10.67" (271mm) of precipitation.

Snowfall

January through March, November and December are months with snowfall. In Wilmers, during December, snow falls for 1.4 days and regularly aggregates up to 0.24" (6mm) of snow. Throughout the year, there are 9.4 snowfall days, and 1.73" (44mm) of snow is accumulated.

Daylight

December has the shortest days of the year in Wilmers, with an average of 9h and 30min of daylight.
On the first day of December in Wilmers, sunrise is at 7:05 am and sunset at 4:41 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 4:51 pm EST.

Sunshine

The average sunshine in December is 5.2h.

UV index

January and December, with an average maximum UV index of 2, are months with the lowest UV index in Wilmers. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 2 in December transforms into the following instructions:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
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Frequently asked questions

What is the usual temperature for Wilmers in December?

The high-temperature, in December, in Wilmers, records 45.5°F (7.5°C), while the low-temperature is 34.5°F (1.4°C). In August, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which combines relative humidity and air temperature, is calculated to be 91.4°F (33°C).

What is the average humidity in December in Wilmers?

In Wilmers, Maryland, the average relative humidity in December is 76%.

How much does it rain in Wilmers in December?

In Wilmers, Maryland, during December, the rain falls for 7.3 days and regularly aggregates up to 0.98" (25mm) of precipitation.

How many days does it snow in December in Wilmers?

In Wilmers, Maryland, in December, snow falls for 1.4 days, with typically accumulated 0.24" (6mm) of snow.

What is the month with the shortest days in Wilmers?

With an average of 9h and 30min of daylight, December has the shortest days of the year in Wilmers, Maryland.

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

In December, the average day length in Wilmers, Maryland, is 9h and 28min.

What time are sunrise and sunset in December in Wilmers?

In December, on the first day of the month, sunrise is at 7:05 am and sunset at 4:41 pm. On the last day of the month, in Wilmers, sunrise is at 7:23 am and sunset at 4:51 pm EST.

How many hours of sunshine does Wilmers have in December?

In Wilmers, Maryland, the average sunshine duration in December is 5.2h.

When is the lowest UV index in Wilmers?

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

What is the UV index reading in December in Wilmers?

In December, the average daily maximum UV index in Wilmers, Maryland, is 2. A UV Index value of 2, and less, symbolizes a minimal hazard to health from unsafe exposure to Sun's UV rays.
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
Wilmers, MD

Average temperature in December - Wilmers, MD
  • Average high temperature in December: 45.5°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 (39.2°F).

  • Average low temperature in December: 34.5°F

The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (27.9°F).

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Average pressure in December
Wilmers, MD

Average pressure in December - Wilmers, MD
  • Average pressure in December: 30.1"Hg

The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed in December
Wilmers, MD

Average wind speed in December - Wilmers, MD
  • Average wind speed in December: 8.6mph

The windiest month (with the highest average wind speed) is February (9.4mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).

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Average humidity in December
Wilmers, MD

Average humidity in December - Wilmers, MD
  • Average humidity in December: 76%

The month with the highest relative humidity is May (79%).
The months with the lowest relative humidity are January, March, April and November (74%).

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Average rainfall in December
Wilmers, MD

Average rainfall in December - Wilmers, MD
  • Average rainfall in December: 0.98"

The wettest month (with the highest rainfall) is August (1.42").
The driest month (with the least rainfall) is September (0.43").

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Average rainfall days in December
Wilmers, MD

Average rainfall days in December - Wilmers, MD
  • Average rainfall days in December: 7.3 days

The month with the highest number of rainy days is July (12.4 days).
The month with the least rainy days is November (5.6 days).

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Average snowfall in December
Wilmers, MD

Average snowfall in December - Wilmers, MD
  • Average snowfall in December: 0.24"

The month with the highest snowfall is January (0.59").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in December
Wilmers, MD

Average snowfall days in December - Wilmers, MD
  • Average snowfall days in December: 1.4 days

The month with the highest number of snowfall days is January (3.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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

Average daylight in December / Average sunshine in December - Wilmers, MD
  • Average daylight in December: 9h and 3min

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 30min).

  • Average sunshine in December: 5h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 6min).

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Average sunshine days in December
Wilmers, MD

Average sunshine days in December - Wilmers, MD
  • Average sunshine days in December: 21.8 days

The month with the most sunshine days is January (22.3 days).
The month with the least sunshine days is July (15.1 days).

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Average UV index in December
Wilmers, MD

Average UV index in December - Wilmers, 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 and December (UV index 2).

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Average cloud cover in December
Wilmers, MD

Average cloud cover in December - Wilmers, MD
  • Average cloud cover in December: 44

The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 29).

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Average visibility in December
Wilmers, MD

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

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

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Wilmers, Maryland, USA

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