December weather forecast
Londontowne, MD

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Weather in December

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

Temperature

The transition to December results in a modest reduction in average high-temperature, moving from a fresh 54.5°F (12.5°C) in November to a chilly 46°F (7.8°C). An average nighttime temperature of 36.5°F (2.5°C) is recorded during December.

Humidity

In December, the average relative humidity is 75%.

Rainfall

In Londontowne, in December, during 7.4 rainfall days, 0.67" (17mm) of precipitation is typically accumulated. In Londontowne, Maryland, during the entire year, the rain falls for 120.4 days and collects up to 10.47" (266mm) of precipitation.

Snowfall

Months with snowfall in Londontowne, Maryland, are January through March, November and December. In December, in Londontowne, it is snowing for 1.5 days. Throughout December, 0.12" (3mm) of snow is accumulated. Throughout the year, in Londontowne, there are 8.3 snowfall days, and 1.22" (31mm) of snow is accumulated.

Ocean temperature

In December, the average ocean temperature in Londontowne, Maryland, 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

December has the shortest days of the year, with an average of 9h and 30min of daylight.
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, in Londontowne, Maryland, sunrise is at 7:24 am and sunset at 4:54 pm EST.

Sunshine

The average sunshine in December in Londontowne is 5.2h.

UV index

January, February and December, with an average maximum UV index of 2, are months with the lowest UV index in Londontowne. A UV Index reading of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In December, a daily maximum UV index of 2 leads to the following instructions:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Enhance your sun protection with tightly woven, yet airy clothing. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
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Frequently asked questions

What is the temperature in December in Londontowne?

In December, in Londontowne, the average high-temperature is 46°F (7.8°C), and the average low-temperature is 36.5°F (2.5°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, in August is computed to be 89.6°F (32°C).

What is the average humidity in December in Londontowne?

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

How many days does it rain in December in Londontowne?

In December, in Londontowne, Maryland, the rain falls for 7.4 days. Throughout December, 0.67" (17mm) of precipitation is accumulated.

How much does it snow in Londontowne in December?

In Londontowne, during December, snow falls for 1.5 days and regularly aggregates up to 0.12" (3mm) of snow.

How cold is the water in December in Londontowne?

In Londontowne, the average seawater temperature in December is 52°F (11.1°C). At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

What is the month with the shortest days in Londontowne?

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

How many hours of daylight does Londontowne have in December?

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

What time are sunrise and sunset in December in Londontowne?

On the first day of December in Londontowne, Maryland, 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 Londontowne?

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

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

January, February 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 Londontowne?

The average daily maximum UV index in December in Londontowne, Maryland, is 2. A UV Index reading of 2, and below, represents a low health risk 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°F 7.8°C
40.3°F 4.6°C
Average low temperature
43.2°F 6.2°C
36.5°F 2.5°C
29.8°F -1.2°C
Average pressure
30.13" 765mmHg
30.11" 765mmHg
30.1" 765mmHg
Average wind speed
9.3mph 15km/h
9.3mph 15km/h
10mph 16.1km/h
Average max. wind speed
9.9mph 15.9km/h
9.9mph 15.9km/h
10.7mph 17.2km/h
Average wind speed gusts
15.2mph 24.5km/h
15.1mph 24.3km/h
16mph 25.7km/h
Average humidity
72%
75%
72%
Average rainfall
0.51" 13mm
0.67" 17mm
0.47" 12mm
Average rainfall days
5.3
7.4
6
Average snowfall
0.04" 1mm
0.12" 3mm
0.67" 17mm
Average snowfall days
0.4
1.5
2.3
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
23.4
21.5
23
Average UV index
3
2
2
Average cloud cover
36%
44%
43%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

Average temperature in December
Londontowne, MD

Average temperature in December - Londontowne, 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).

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Average pressure in December
Londontowne, MD

Average pressure in December - Londontowne, 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
Londontowne, MD

Average wind speed in December - Londontowne, 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).

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Average humidity in December
Londontowne, MD

Average humidity in December - Londontowne, 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%).

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Average rainfall in December
Londontowne, MD

Average rainfall in December - Londontowne, 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").

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Average rainfall days in December
Londontowne, MD

Average rainfall days in December - Londontowne, 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).

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Average snowfall in December
Londontowne, MD

Average snowfall in December - Londontowne, 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").

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Average snowfall days in December
Londontowne, MD

Average snowfall days in December - Londontowne, 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).

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Average sea temperature in December
Londontowne, MD

Average sea temperature in December - Londontowne, 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
Londontowne, MD

Average daylight in December / Average sunshine in December - Londontowne, 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).

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Average sunshine days in December
Londontowne, MD

Average sunshine days in December - Londontowne, 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).

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Average UV index in December
Londontowne, MD

Average UV index in December - Londontowne, 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
Londontowne, MD

Average cloud cover in December - Londontowne, 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).

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Average visibility in December
Londontowne, MD

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

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