December weather forecast
Castle Oaks, MD

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Weather in December

December, the first month of the winter in Castle Oaks, is still a chilly month, with an average temperature ranging between max 42.8°F (6°C) and min 30.4°F (-0.9°C).

Temperature

In the transition to December, Castle Oaks observes a minor drop in the average high-temperature, shifting from a fresh 51.3°F (10.7°C) in November to a chilly 42.8°F (6°C). Castle Oaks records a steady low-temperature average of 30.4°F (-0.9°C) during December.

Humidity

In Castle Oaks, the average relative humidity in December is 79%.

Rainfall

In December, in Castle Oaks, the rain falls for 11 days. Throughout December, 2.4" (61mm) of precipitation is accumulated. In Castle Oaks, during the entire year, the rain falls for 158.9 days and collects up to 32.68" (830mm) of precipitation.

Snowfall

Months with snowfall in Castle Oaks are January through April, October through December. In December, in Castle Oaks, it is snowing for 3.9 days. Throughout December, 1.93" (49mm) of snow is accumulated. In Castle Oaks, during the entire year, snow falls for 23.9 days and aggregates up to 13.31" (338mm) of snow.

Daylight

With an average of 9h and 24min of daylight, December has the shortest days of the year in Castle Oaks.
On the first day of the month, sunrise is at 7:09 am and sunset at 4:43 pm. On the last day of December, in Castle Oaks, sunrise is at 7:27 am and sunset at 4:53 pm EST.

Sunshine

The average sunshine in December in Castle Oaks is 4.9h.

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 of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: The maximum daily UV index of 2 in December converts into the following recommendations:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
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Frequently asked questions

How cold is it in Castle Oaks in December?

During December, Castle Oaks experiences an average high-temperature of 42.8°F (6°C) and a low-temperature of 30.4°F (-0.9°C). In August, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines air temperature and relative humidity, is computed to be 87.8°F (31°C).

What is the average humidity in December in Castle Oaks?

In Castle Oaks, the average relative humidity in December is 79%.

How many days does it rain in December in Castle Oaks?

In Castle Oaks, Maryland, in December, it is raining for 11 days, with typically 2.4" (61mm) of accumulated precipitation.

How much does it snow in Castle Oaks in December?

In Castle Oaks, during December, snow falls for 3.9 days and regularly aggregates up to 1.93" (49mm) of snow.

What is the month with the shortest days in Castle Oaks?

The month with the shortest days is December, with an average of 9h and 24min of daylight.

How many hours of daylight does Castle Oaks have in December?

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

When are sunrise and sunset in December in Castle Oaks?

On the first day of December in Castle Oaks, sunrise is at 7:09 am and sunset at 4:43 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 4:53 pm EST.

How many hours of sunshine does Castle Oaks have in December?

In December, the average sunshine duration in Castle Oaks, Maryland, is 4.9h.

What are the months with the lowest UV index in Castle Oaks?

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

How high is the UV index in December in Castle Oaks?

The average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a minimal hazard to health from 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
Castle Oaks, MD

Average temperature in December - Castle Oaks, MD
  • Average high temperature in December: 42.8°F

The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (36.9°F).

  • Average low temperature in December: 30.4°F

The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is January (23.9°F).

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Average pressure in December
Castle Oaks, MD

Average pressure in December - Castle Oaks, 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 (29.94"Hg).

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Average wind speed in December
Castle Oaks, MD

Average wind speed in December - Castle Oaks, MD
  • Average wind speed in December: 8.1mph

The windiest months (with the highest average wind speed) are February and March (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

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Average humidity in December
Castle Oaks, MD

Average humidity in December - Castle Oaks, MD
  • Average humidity in December: 79%

The month with the highest relative humidity is May (81%).
The months with the lowest relative humidity are January, April, July and November (76%).

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Average rainfall in December
Castle Oaks, MD

Average rainfall in December - Castle Oaks, MD
  • Average rainfall in December: 2.4"

The wettest month (with the highest rainfall) is August (3.9").
The driest month (with the least rainfall) is February (2.13").

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Average rainfall days in December
Castle Oaks, MD

Average rainfall days in December - Castle Oaks, MD
  • Average rainfall days in December: 11 days

The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is January (8.4 days).

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Average snowfall in December
Castle Oaks, MD

Average snowfall in December - Castle Oaks, MD
  • Average snowfall in December: 1.93"

The month with the highest snowfall is March (4.06").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in December
Castle Oaks, MD

Average snowfall days in December - Castle Oaks, MD
  • Average snowfall days in December: 3.9 days

The month with the highest number of snowfall days is January (6.9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in December /
Average sunshine in December
Castle Oaks, MD

Average daylight in December / Average sunshine in December - Castle Oaks, 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 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 36min).

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Average sunshine days in December
Castle Oaks, MD

Average sunshine days in December - Castle Oaks, MD
  • Average sunshine days in December: 17.1 days

The month with the most sunshine days is November (18.6 days).
The month with the least sunshine days is July (11.6 days).

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Average UV index in December
Castle Oaks, MD

Average UV index in December - Castle Oaks, 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).

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Average cloud cover in December
Castle Oaks, MD

Average cloud cover in December - Castle Oaks, MD
  • Average cloud cover in December: 48

The months with the most cloud cover are February and March (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 32).

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Average visibility in December
Castle Oaks, MD

Average visibility in December - Castle Oaks, MD
  • Average visibility in December: 6mi

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

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Castle Oaks, Maryland, USA

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