December weather forecast
Sanford, ME

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Weather in December

December brings Sanford under the full swing of winter. Snowflakes begin to fill the landscape, painting the town in white hues. The daylight shrinks, and the nights are frosty, with holiday decorations dotting the cityscape. An increase in snowfall to 2.83" (72mm) reintroduces the city to its winter wonderland phase. While the month stays cold, the festive spirit keeps the city warm at heart.

Temperature

December in Sanford brings a minor decrease, with the average high-temperature reducing from a chilly 45.9°F (7.7°C) in November to a cold 35.6°F (2°C). In December, Sanford experiences a temperature dip to an average of 25.7°F (-3.5°C) at night.

Humidity

The average relative humidity in December is 80%.

Rainfall

In December, the rain falls for 8.3 days. Throughout December, 1.46" (37mm) of precipitation is accumulated. In Sanford, during the entire year, the rain falls for 118.9 days and collects up to 14.61" (371mm) of precipitation.

Snowfall

January through May, November and December are months with snowfall. December is the month with the most snowfall. Snow falls for 6.3 days and accumulates 2.83" (72mm) of snow.

Daylight

The month with the shortest days is December, with an average of 9h and 0min of daylight.
On the first day of the month, sunrise is at 6:56 am and sunset at 4:08 pm. On the last day of December, sunrise is at 7:15 am and sunset at 4:17 pm EST.

Sunshine

The months with the least sunshine in Sanford are February and December, with an average of 4.9h of sunshine.

UV index

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for the average person.
Note: The UV index of 2 in December translates into these instructions:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Opt for tightly woven and loose clothing to enhance protection from the Sun. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
Updated: Aug 22, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is it in December?

In December, in Sanford, the average high-temperature is 35.6°F (2°C), and the average low-temperature is 25.7°F (-3.5°C).

What is the average humidity in December?

The average relative humidity in December is 80%.

How many days does it rain in December?

In December, the rain falls for 8.3 days. Throughout December, 1.46" (37mm) of precipitation is accumulated.

What is the snowiest month?

The month with the most snowfall is December, when snow falls for 6.3 days and typically aggregates up to 2.83" (72mm) of snow.

How many days does it snow in December?

In December, it is snowing for 6.3 days. Throughout December, 2.83" (72mm) of snow is accumulated.

What is the month with the shortest days?

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

What is the average length of the day in December?

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

When are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 6:56 am and sunset at 4:08 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 4:17 pm EST.

What are the months with the least sunshine?

The months with the least sunshine in Sanford are February and December, with an average of 4.9h of sunshine.

How long on average sun shines in December?

In Sanford, the average sunshine duration in December is 4.9h.

What is the month with the lowest UV index?

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

What is the UV index intensity in December?

In Sanford, the average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a low health threat 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
Sanford, ME

Average temperature in December - Sanford, ME
  • Average high temperature in December: 35.6°F

The warmest month (with the highest average high temperature) is July (76.3°F).
The month with the lowest average high temperature is January (30°F).

  • Average low temperature in December: 25.7°F

The month with the highest average low temperature is July (60.6°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).

Average pressure in December
Sanford, ME

Average pressure in December - Sanford, ME
  • Average pressure in December: 30.02"Hg

The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in December
Sanford, ME

Average wind speed in December - Sanford, ME
  • Average wind speed in December: 9.2mph

The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).

Average humidity in December
Sanford, ME

Average humidity in December - Sanford, ME
  • Average humidity in December: 80%

The months with the highest relative humidity are January and February (82%).
The months with the lowest relative humidity are April and November (76%).

Average rainfall in December
Sanford, ME

Average rainfall in December - Sanford, ME
  • Average rainfall in December: 1.46"

The wettest month (with the highest rainfall) is October (1.54").
The driest month (with the least rainfall) is September (0.67").

Average rainfall days in December
Sanford, ME

Average rainfall days in December - Sanford, ME
  • Average rainfall days in December: 8.3 days

The month with the highest number of rainy days is May (12.9 days).
The month with the least rainy days is January (5.6 days).

Average snowfall in December
Sanford, ME

Average snowfall in December - Sanford, ME
  • Average snowfall in December: 2.83"

The month with the highest snowfall is December (2.83").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in December
Sanford, ME

Average snowfall days in December - Sanford, ME
  • Average snowfall days in December: 6.3 days

The month with the highest number of snowfall days is January (8.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Sanford, 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 5min

The month with the most sunshine is August (Average sunshine: 10h and 30min).
The months with the least sunshine are February and December (Average sunshine: 4h and 54min).

Average sunshine days in December
Sanford, ME

Average sunshine days in December - Sanford, ME
  • Average sunshine days in December: 16.5 days

The month with the most sunshine days is January (19.6 days).
The month with the least sunshine days is April (14.2 days).

Average UV index in December
Sanford, ME

Average UV index in December - Sanford, 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
Sanford, ME

Average cloud cover in December - Sanford, ME
  • Average cloud cover in December: 47

The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 31).

Average visibility in December
Sanford, ME

Average visibility in December - Sanford, 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).

Sanford, Maine, USA

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