December weather forecast
Autumn Chase at Riva Trace, MD

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Weather in December

December, the first month of the winter in Autumn Chase at Riva Trace, is still a chilly month, with temperature in the range of an average high of 46°F (7.8°C) and an average low of 36.5°F (2.5°C).

Temperature

December implies a soft temperature shift, with average high-temperatures reducing from November's cool 54.5°F (12.5°C) to a frosty 46°F (7.8°C). Autumn Chase at Riva Trace experiences a mean temperature of 36.5°F (2.5°C) during December nights.

Humidity

In Autumn Chase at Riva Trace, the average relative humidity in December is 75%.

Rainfall

In Autumn Chase at Riva Trace, during December, the rain falls for 7.4 days and regularly aggregates up to 0.67" (17mm) of precipitation. Throughout the year, there are 120.4 rainfall days, and 10.47" (266mm) of precipitation is accumulated.

Snowfall

January through March, November and December are months with snowfall. In Autumn Chase at Riva Trace, during December, snow falls for 1.5 days and regularly aggregates up to 0.12" (3mm) of snow. In Autumn Chase at Riva Trace, during the entire year, snow falls for 8.3 days and aggregates up to 1.22" (31mm) of snow.

Daylight

With an average of 9h and 30min of daylight, December has the shortest days of the year.
On the first day of December, sunrise is at 7:06 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 4:54 pm EST.

Sunshine

In Autumn Chase at Riva Trace, the average sunshine in December is 5.2h.

UV index

January, February and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 2 in December interprets into the following advice:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. During bright days, sunglasses that offer UVA and UVB defense are recommended. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.

Frequently asked questions

What is the usual temperature for Autumn Chase at Riva Trace in December?

In December, the average high-temperature and low-temperature are 46°F (7.8°C) and 36.5°F (2.5°C) respectively. In August, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which combines relative humidity and air temperature, is computed to be 89.6°F (32°C).

What is the average humidity in December?

The average relative humidity in December is 75%.

How many days does it rain in December in Autumn Chase at Riva Trace?

In Autumn Chase at Riva Trace, in December, it is raining for 7.4 days, with typically 0.67" (17mm) of accumulated precipitation.

How many days does it snow in December?

In Autumn Chase at Riva Trace, during December, snow falls for 1.5 days and regularly aggregates up to 0.12" (3mm) of snow.

What is the month with the shortest days?

December has the shortest days of the year, with an average of 9h and 30min of daylight.

How many hours of daylight does Autumn Chase at Riva Trace have in December?

In Autumn Chase at Riva Trace, the average day length in December is 9h and 29min.

What time are sunrise and sunset in December?

On the first day of December in Autumn Chase at Riva Trace, sunrise is at 7:06 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 4:54 pm EST.

How long on average sun shines in December?

In Autumn Chase at Riva Trace, the average sunshine duration in December is 5.2h.

What is the month with the lowest UV index?

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

What is the UV index intensity in December?

In December, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability 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
Autumn Chase at Riva Trace, MD

Average temperature in December - Autumn Chase at Riva Trace, MD
  • Average high temperature in December: 46°F

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (40.3°F).

  • Average low temperature in December: 36.5°F

The month with the highest average low temperature is July (72°F).
The coldest month (with the lowest average low temperature) is January (29.8°F).

Average pressure in December
Autumn Chase at Riva Trace, MD

Average pressure in December - Autumn Chase at Riva Trace, MD
  • Average pressure in December: 30.11"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).

Average wind speed in December
Autumn Chase at Riva Trace, MD

Average wind speed in December - Autumn Chase at Riva Trace, MD
  • Average wind speed in December: 9.3mph

The windiest month (with the highest average wind speed) is January (10mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).

Average humidity in December
Autumn Chase at Riva Trace, MD

Average humidity in December - Autumn Chase at Riva Trace, MD
  • Average humidity in December: 75%

The month with the highest relative humidity is May (78%).
The months with the lowest relative humidity are January, March, April and November (72%).

Average rainfall in December
Autumn Chase at Riva Trace, MD

Average rainfall in December - Autumn Chase at Riva Trace, MD
  • Average rainfall in December: 0.67"

The wettest month (with the highest rainfall) is August (1.69").
The driest month (with the least rainfall) is January (0.47").

Average rainfall days in December
Autumn Chase at Riva Trace, MD

Average rainfall days in December - Autumn Chase at Riva Trace, MD
  • Average rainfall days in December: 7.4 days

The months with the highest number of rainy days are July and August (14.3 days).
The month with the least rainy days is November (5.3 days).

Average snowfall in December
Autumn Chase at Riva Trace, MD

Average snowfall in December - Autumn Chase at Riva Trace, MD
  • Average snowfall in December: 0.12"

The month with the highest snowfall is January (0.67").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in December
Autumn Chase at Riva Trace, MD

Average snowfall days in December - Autumn Chase at Riva Trace, MD
  • Average snowfall days in December: 1.5 days

The month with the highest number of snowfall days is February (2.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in December /
Average sunshine in December
Autumn Chase at Riva Trace, MD

Average daylight in December / Average sunshine in December - Autumn Chase at Riva Trace, 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 0min).

Average sunshine days in December
Autumn Chase at Riva Trace, MD

Average sunshine days in December - Autumn Chase at Riva Trace, MD
  • Average sunshine days in December: 21.5 days

The month with the most sunshine days is November (23.4 days).
The month with the least sunshine days is August (13.8 days).

Average UV index in December
Autumn Chase at Riva Trace, MD

Average UV index in December - Autumn Chase at Riva Trace, 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 and December (UV index 2).

Average cloud cover in December
Autumn Chase at Riva Trace, MD

Average cloud cover in December - Autumn Chase at Riva Trace, MD
  • Average cloud cover in December: 44

The months with the most cloud cover are February and March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 28).

Average visibility in December
Autumn Chase at Riva Trace, MD

Average visibility in December - Autumn Chase at Riva Trace, 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).

Autumn Chase at Riva Trace, Maryland, USA

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