December weather forecastSaco, ME

December

Weather in December

December officially marks the beginning of winter in Saco, Maine, with thick blankets of snow covering the city, measuring up to 4.17" (106mm). The city experiences the shortest days of the year, with low but persistent daylight. The cold weather fully sets in, demanding warm clothing for outdoor activities. Despite the frosty conditions and fewer daylight hours, the festive cheer on the streets of Saco manages to light up the city. December in Saco, painted in white, culminates the year with an enchanting winter charm.

Temperature

The shift to December brings a decrease in the average high-temperature in Saco, Maine, falling from a chilly 46.2°F (7.9°C) in November to an icy 36.5°F (2.5°C). In December, the average low-temperature is a subzero cold 27°F (-2.8°C).

Humidity

The average relative humidity in December in Saco, Maine, is 78%.

Rainfall

In December, the rain falls for 9.9 days. Throughout December, 2.8" (71mm) of precipitation is accumulated. Throughout the year, in Saco, there are 133.9 rainfall days, and 27.44" (697mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall in Saco. In Saco, in December, snow falls for 6.2 days, with typically accumulated 4.17" (106mm) of snow. In Saco, during the entire year, snow falls for 33.7 days and aggregates up to 18.94" (481mm) of snow.

Daylight

December has the shortest days of the year, with an average of 9h and 0min of daylight.
On the first day of the month, sunrise is at 6:55 am and sunset at 4:06 pm. On the last day of December, in Saco, sunrise is at 7:14 am and sunset at 4:15 pm EST.

Sunshine

February and December, with an average of 4.7h of sunshine, are months with the least sunshine in Saco, Maine.

UV index

The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: A maximum high daily UV index of 2 during December translates into the following directions:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Enhance your sun protection with tightly woven, yet airy clothing. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.

Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

In December, in Saco, the average high-temperature is 36.5°F (2.5°C), and the average low-temperature is 27°F (-2.8°C).

The average relative humidity in December is 78%.

In Saco, Maine, in December, it is raining for 9.9 days, with typically 2.8" (71mm) of accumulated precipitation.

In Saco, Maine, in December, during 6.2 snowfall days, 4.17" (106mm) of snow is typically accumulated.

With an average of 9h and 0min of daylight, December has the shortest days of the year in Saco.

The average day length in December in Saco is 9h and 1min.

In December, on the first day of the month, sunrise is at 6:55 am and sunset at 4:06 pm. On the last day of the month, in Saco, sunrise is at 7:14 am and sunset at 4:15 pm EST.

February and December, with an average of 4.7h of sunshine, are months with the least sunshine.

The average sunshine duration in December in Saco is 4.7h.

The months with the lowest UV index in Saco, Maine, are January through March, November and December, with an average maximum UV index of 2.

In December, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents a minimal hazard to health from unsafe exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

46.2°F

36.5°F

30.7°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

10.5mph

10.9mph

11.7mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

17.2

15.6

17.3

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Saco, ME

Average high temperature in December: 36.5°F

The warmest month (with the highest average high temperature) is July (74.5°F).
The month with the lowest average high temperature is January (30.7°F).

Average low temperature in December: 27°F

The month with the highest average low temperature is July (61.2°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).

Average pressure in December
Saco, ME

Average pressure in December: 30.02"Hg

The months with the highest atmospheric pressure are September and November (30.05"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in December
Saco, ME

Average wind speed in December: 10.2mph

The windiest month (with the highest average wind speed) is January (11.1mph).
The calmest months (with the lowest average wind speed) are July and August (6.7mph).

Average humidity in December
Saco, ME

Average humidity in December: 78%

The months with the highest relative humidity are June and July (82%).
The month with the lowest relative humidity is November (75%).

Average rainfall in December
Saco, ME

Average rainfall in December: 2.8"

The wettest month (with the highest rainfall) is October (2.95").
The driest month (with the least rainfall) is September (1.34").

Average rainfall days in December
Saco, ME

Average rainfall days in December: 9.9 days

The month with the highest number of rainy days is April (14.3 days).
The month with the least rainy days is January (6.3 days).

Average snowfall in December
Saco, ME

Average snowfall in December: 4.17"

The month with the highest snowfall is February (4.41").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Saco, ME

Average snowfall days in December: 6.2 days

The month with the highest number of snowfall days is January (8.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Saco, ME

Average daylight in December: 9h and 0min

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

Average sunshine in December: 4h and 42min

The month with the most sunshine is August (Average sunshine: 10h and 18min).
The months with the least sunshine are February and December (Average sunshine: 4h and 42min).

Average sunshine days in December
Saco, ME

Average sunshine days in December: 15.6 days

The month with the most sunshine days is September (18.3 days).
The month with the least sunshine days is April (12.9 days).

Average UV index in December
Saco, ME

Average UV index in December: 2

The month with the highest UV index is August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

Average cloud cover in December
Saco, ME

Average cloud cover in December: 49

The month with the most cloud cover is March (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 32).

Average visibility in December
Saco, ME

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).