December weather forecast
Deale, MD

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Weather in December

December in Deale caps off the year with winter in full swing. With an average low temperature of 36.5°F (2.5°C), light snowfall, and a short duration of daylight, the month is unmistakably wintry. While rainfall levels decrease, the cool, dry air and steady wind maintain the typical winter feel. Despite the cold, the holiday spirit infuses warmth into the cold, wintry days.

Temperature

December's arrival coincides with a soft drop in the average high-temperature, subtly decreasing from November's cool 54.5°F (12.5°C) to a chilly 46.4°F (8°C). Nighttime temperatures in December average to a wintry 36.5°F (2.5°C) in Deale.

Humidity

In December, the average relative humidity in Deale is 75%.

Rainfall

In Deale, in December, it is raining for 7.5 days, with typically 0.67" (17mm) of accumulated precipitation. Throughout the year, in Deale, there are 127.2 rainfall days, and 11.85" (301mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through March, November and December. In December, in Deale, Maryland, it is snowing for 1.4 days. Throughout December, 0.16" (4mm) of snow is accumulated. Throughout the year, there are 8 snowfall days, and 1.22" (31mm) of snow is accumulated.

Ocean temperature

In Deale, in December, the average water temperature is 52°F (11.1°C).
Note: Immersing oneself in 52°F (11.1°C) at sub14°F (-10°C) temperatures is a recipe for harsh cold shock and quickened breathing unless adequately equipped.

Daylight

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

The months with the least sunshine in Deale are February and December, with an average of 5.2h of sunshine.

UV index

January, February and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: In December, a daily UV index of 2 turns into the following recommendations:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
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Frequently asked questions

What is the average December temperature in Deale?

In Deale, 46.4°F (8°C) is the average high-temperature and 36.5°F (2.5°C) is the average low-temperature during December. In August, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which factors the actual air temperature with the relative humidity, is evaluated at 89.6°F (32°C).

What is the average humidity in December in Deale?

The average relative humidity in December in Deale, Maryland, is 75%.

How much does it rain in Deale in December?

In Deale, Maryland, in December, it is raining for 7.5 days, with typically 0.67" (17mm) of accumulated precipitation.

How much does it snow in Deale in December?

In Deale, Maryland, in December, snow falls for 1.4 days, with typically accumulated 0.16" (4mm) of snow.

What is the water temperature in December in Deale?

In Deale, the average seawater temperature in December is 52°F (11.1°C). Swimming in 52°F (11.1°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

What is the month with the shortest days in Deale?

The month with the shortest days in Deale, Maryland, is December, with an average of 9h and 30min of daylight.

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

In December, the average day length in Deale is 9h and 31min.

When are sunrise and sunset in December in Deale?

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.

What are the months with the least sunshine in Deale?

The months with the least sunshine in Deale are February and December, with an average of 5.2h of sunshine.

How long on average sun shines in December in Deale?

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

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

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

How high is the UV index in December in Deale?

The average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation.
Today
Tomorrow
Long-term
YearJFMAMJJASONDecember
Nov
December
Jan
Average high temperature
54.5°F 12.5°C
46.4°F 8°C
40.5°F 4.7°C
Average low temperature
43.2°F 6.2°C
36.5°F 2.5°C
30°F -1.1°C
Average pressure
30.13" 765mmHg
30.11" 765mmHg
30.1" 765mmHg
Average wind speed
8.9mph 14.3km/h
8.9mph 14.3km/h
9.7mph 15.6km/h
Average max. wind speed
9.6mph 15.4km/h
9.6mph 15.4km/h
10.4mph 16.7km/h
Average wind speed gusts
14.7mph 23.7km/h
14.6mph 23.5km/h
15.5mph 24.9km/h
Average humidity
72%
75%
72%
Average rainfall
0.55" 14mm
0.67" 17mm
0.51" 13mm
Average rainfall days
5.9
7.5
6.4
Average snowfall
0.04" 1mm
0.16" 4mm
0.55" 14mm
Average snowfall days
0.3
1.4
2.6
Average sea temperature
58.4°F 14.7°C
52°F 11.1°C
47.8°F 8.8°C
Average daylight
10h 1min
9h 3min
9h 5min
Average sunshine
5h 5min
5h 1min
5h 2min
Average sunshine days
22.6
21
21.9
Average UV index
3
2
2
Average cloud cover
35%
43%
42%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

Average temperature in December
Deale, MD

Average temperature in December - Deale, MD
  • Average high temperature in December: 46.4°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 (40.5°F).

  • Average low temperature in December: 36.5°F

The month with the highest average low temperature is July (71.2°F).
The coldest month (with the lowest average low temperature) is January (30°F).

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Average pressure in December
Deale, MD

Average pressure in December - Deale, 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).

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Average wind speed in December
Deale, MD

Average wind speed in December - Deale, MD
  • Average wind speed in December: 8.9mph

The windiest month (with the highest average wind speed) is March (9.8mph).
The calmest month (with the lowest average wind speed) is July (6.4mph).

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Average humidity in December
Deale, MD

Average humidity in December - Deale, 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 and November (72%).

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Average rainfall in December
Deale, MD

Average rainfall in December - Deale, MD
  • Average rainfall in December: 0.67"

The wettest month (with the highest rainfall) is August (1.93").
The driest month (with the least rainfall) is January (0.51").

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Average rainfall days in December
Deale, MD

Average rainfall days in December - Deale, MD
  • Average rainfall days in December: 7.5 days

The month with the highest number of rainy days is August (15.6 days).
The month with the least rainy days is November (5.9 days).

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Average snowfall in December
Deale, MD

Average snowfall in December - Deale, MD
  • Average snowfall in December: 0.16"

The month with the highest snowfall is January (0.55").
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
Deale, MD

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

The month with the highest number of snowfall days is January (2.6 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average sea temperature in December
Deale, MD

Average sea temperature in December - Deale, MD
  • Average sea temperature in December: 52°F

The best month for swimming (with the highest average sea temperature) is August (78°F).
The coldest month (with the lowest average sea temperature) is February (45.9°F).

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

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

The month with the longest days is June (Average daylight: 14h and 48min).
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 54min).
The months with the least sunshine are February and December (Average sunshine: 5h and 12min).

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Average sunshine days in December
Deale, MD

Average sunshine days in December - Deale, MD
  • Average sunshine days in December: 21 days

The month with the most sunshine days is November (22.6 days).
The month with the least sunshine days is August (12.5 days).

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Average UV index in December
Deale, MD

Average UV index in December - Deale, 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).

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Average cloud cover in December
Deale, MD

Average cloud cover in December - Deale, MD
  • Average cloud cover in December: 43

The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 27).

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Average visibility in December
Deale, MD

Average visibility in December - Deale, 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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Deale, Maryland, USA

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