December weather forecast
Fallston, MD

Share

Weather in December

December, the first month of the winter in Fallston, is still a chilly month, with an average temperature varying between 32.2°F (0.1°C) and 43.7°F (6.5°C).

Temperature

The onset of December brings a small change in high-temperatures, falling from a cool 52.9°F (11.6°C) in November to a frosty 43.7°F (6.5°C). Throughout December, Fallston records an average temperature of 32.2°F (0.1°C) at night.

Humidity

In December, the average relative humidity is 78%.

Rainfall

In Fallston, in December, it is raining for 9.8 days, with typically 2.76" (70mm) of accumulated precipitation. In Fallston, during the entire year, the rain falls for 155.7 days and collects up to 32.64" (829mm) of precipitation.

Snowfall

January through May, November and December are months with snowfall. In Fallston, in December, snow falls for 3.4 days, with typically accumulated 1.38" (35mm) of snow. In Fallston, during the entire year, snow falls for 19.9 days and aggregates up to 9.72" (247mm) of snow.

Daylight

December has the shortest days of the year, with an average of 9h and 24min of daylight.
On the first day of the month, sunrise is at 7:07 am and sunset at 4:42 pm. On the last day of December, sunrise is at 7:25 am and sunset at 4:52 pm EST.

Sunshine

In Fallston, the average sunshine in December is 5h.

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 unprotected exposure to Sun's UV rays for the ordinary person.
Note: The daily high UV index of 2 during December translates into the following recommendations:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Updated: Aug 29, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold does it get in December?

An average high-temperature, in December, in Fallston, is 43.7°F (6.5°C) and the average low-temperature is 32.2°F (0.1°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, in August is evaluated at 87.8°F (31°C).

What is the average humidity in December?

In December, the average relative humidity is 78%.

How many days does it rain in December?

In December, the rain falls for 9.8 days. Throughout December, 2.76" (70mm) of precipitation is accumulated.

How much does it snow in December?

In Fallston, in December, snow falls for 3.4 days, with typically accumulated 1.38" (35mm) of snow.

What is the month with the shortest days?

With an average of 9h and 24min of daylight, December has the shortest days of the year.

How many hours of daylight does Fallston have in December?

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

When are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 7:07 am and sunset at 4:42 pm. On the last day of the month, in Fallston, sunrise is at 7:25 am and sunset at 4:52 pm EST.

How many hours of sunshine does Fallston have in December?

In December, the average sunshine duration is 5h.

When is the lowest UV index?

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

How high is the UV index in December?

In December, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to 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
Fallston, MD

Average temperature in December - Fallston, MD
  • Average high temperature in December: 43.7°F

The warmest month (with the highest average high temperature) is July (84.6°F).
The month with the lowest average high temperature is January (37.6°F).

  • Average low temperature in December: 32.2°F

The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (25.3°F).

Average pressure in December
Fallston, MD

Average pressure in December - Fallston, 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
Fallston, MD

Average wind speed in December - Fallston, MD
  • Average wind speed in December: 8.3mph

The windiest month (with the highest average wind speed) is March (9.1mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).

Average humidity in December
Fallston, MD

Average humidity in December - Fallston, MD
  • Average humidity in December: 78%

The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is April (74%).

Average rainfall in December
Fallston, MD

Average rainfall in December - Fallston, MD
  • Average rainfall in December: 2.76"

The wettest month (with the highest rainfall) is August (4.09").
The driest month (with the least rainfall) is February (2.09").

Average rainfall days in December
Fallston, MD

Average rainfall days in December - Fallston, MD
  • Average rainfall days in December: 9.8 days

The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is January (8.3 days).

Average snowfall in December
Fallston, MD

Average snowfall in December - Fallston, MD
  • Average snowfall in December: 1.38"

The month with the highest snowfall is March (2.87").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in December
Fallston, MD

Average snowfall days in December - Fallston, MD
  • Average snowfall days in December: 3.4 days

The months with the highest number of snowfall days are January and February (5.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Fallston, 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: 5h and 0min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

Average sunshine days in December
Fallston, MD

Average sunshine days in December - Fallston, MD
  • Average sunshine days in December: 17.8 days

The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is May (11.7 days).

Average UV index in December
Fallston, MD

Average UV index in December - Fallston, 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).

Average cloud cover in December
Fallston, MD

Average cloud cover in December - Fallston, MD
  • Average cloud cover in December: 46

The month with the most cloud cover is March (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 31).

Average visibility in December
Fallston, MD

Average visibility in December - Fallston, MD
  • Average visibility in December: 6mi

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

Fallston, Maryland, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location