December weather forecast
Riva Farms, MD

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Weather in December

The first month of the winter, December, is still a chilly month in Riva Farms, Maryland, with an average temperature fluctuating between 36.5°F (2.5°C) and 46°F (7.8°C).

Temperature

The arrival of December suggests a slight decrease in the average high-temperature, moving from a cool 54.5°F (12.5°C) in November to a chilly 46°F (7.8°C). Riva Farms experiences an average temperature drop to a wintry 36.5°F (2.5°C) during December nights.

Humidity

The average relative humidity in December is 75%.

Rainfall

In December, the rain falls for 7.4 days. Throughout December, 0.67" (17mm) of precipitation is accumulated. 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 Riva Farms, during December, snow falls for 1.5 days and regularly aggregates up to 0.12" (3mm) of snow. In Riva Farms, 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 the month, sunrise is at 7:06 am and sunset at 4:44 pm. On the last day of December, sunrise is at 7:24 am and sunset at 4:54 pm EST.

Sunshine

The average sunshine in December is 5.2h.

UV index

The months with the lowest UV index are January, February and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: The daily high UV index of 2 during December translates into the following recommendations:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.

Frequently asked questions

What are December temperatures in Riva Farms?

Riva Farms in December has an average high-temperature of 46°F (7.8°C) and an average low-temperature of 36.5°F (2.5°C). In August, the average heat index (a.k.a. 'real feel', 'feels like'), which represents the influence of relative humidity on air temperature, is evaluated at 89.6°F (32°C).

What is the average humidity in December?

In December, the average relative humidity is 75%.

How much does it rain in December?

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

How much does it snow in December?

In December, in Riva Farms, it is snowing for 1.5 days. Throughout December, 0.12" (3mm) of snow is accumulated.

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.

What is the average length of the day in December in Riva Farms?

In December, the average day length is 9h and 29min.

When is the sunrise / sunset in December?

In December, on the first day of the month, 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?

The average sunshine duration in December is 5.2h.

What are the months with the lowest UV index?

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

What is the UV index reading in December?

The average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability 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
Riva Farms, MD

Average temperature in December - Riva Farms, 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
Riva Farms, MD

Average pressure in December - Riva Farms, 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
Riva Farms, MD

Average wind speed in December - Riva Farms, 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
Riva Farms, MD

Average humidity in December - Riva Farms, 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
Riva Farms, MD

Average rainfall in December - Riva Farms, 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
Riva Farms, MD

Average rainfall days in December - Riva Farms, 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
Riva Farms, MD

Average snowfall in December - Riva Farms, 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
Riva Farms, MD

Average snowfall days in December - Riva Farms, 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
Riva Farms, MD

Average daylight in December / Average sunshine in December - Riva Farms, 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
Riva Farms, MD

Average sunshine days in December - Riva Farms, 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
Riva Farms, MD

Average UV index in December - Riva Farms, 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
Riva Farms, MD

Average cloud cover in December - Riva Farms, 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
Riva Farms, MD

Average visibility in December - Riva Farms, 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).

Riva Farms, Maryland, USA

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