December weather forecast
South Casco, ME

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Weather in December

December, the first month of the winter in South Casco, is also an icy month, with an average temperature varying between 33.3°F (0.7°C) and 23.2°F (-4.9°C).

Temperature

South Casco's weather in December involves a decrease in the average high-temperature, moving down from November's chilly 44.6°F (7°C) to an icy 33.3°F (0.7°C). Throughout December, South Casco encounters an average temperature drop to a freezing cold 23.2°F (-4.9°C).

Humidity

The average relative humidity in December is 79%.

Rainfall

In December, the rain falls for 5.9 days. Throughout December, 1.34" (34mm) of precipitation is accumulated. In South Casco, during the entire year, the rain falls for 121.1 days and collects up to 16.3" (414mm) of precipitation.

Snowfall

January through May, November and December are months with snowfall in South Casco. In December, in South Casco, it is snowing for 5 days. Throughout December, 2.99" (76mm) of snow is accumulated. Throughout the year, in South Casco, there are 31.3 snowfall days, and 12.76" (324mm) of snow is accumulated.

Daylight

The month with the shortest days in South Casco is December, with an average of 9h and 0min of daylight.
On the first day of December in South Casco, sunrise is at 6:57 am and sunset at 4:05 pm. On the last day of the month, sunrise is at 7:16 am and sunset at 4:14 pm EST.

Sunshine

The months with the least sunshine in South Casco, Maine, are February and December, with an average of 4.8h of sunshine.

UV index

The months with the lowest UV index in South Casco are January through March, October through December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for average individuals.
Note: In December, a daily maximum UV index of 2 leads to the following instructions:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. To guard against the harmful effects of the Sun, minimize exposure during midday. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
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Frequently asked questions

How cold is December in South Casco?

The high-temperature, in December, in South Casco, records 33.3°F (0.7°C), while the low-temperature is 23.2°F (-4.9°C).

What is the average humidity in December in South Casco?

In South Casco, the average relative humidity in December is 79%.

How many days does it rain in December in South Casco?

In South Casco, in December, during 5.9 rainfall days, 1.34" (34mm) of precipitation is typically accumulated.

How many days does it snow in December in South Casco?

In South Casco, Maine, during December, snow falls for 5 days and regularly aggregates up to 2.99" (76mm) of snow.

What is the month with the shortest days in South Casco?

December has the shortest days of the year in South Casco, with an average of 9h and 0min of daylight.

What is the average length of the day in December in South Casco?

The average day length in December in South Casco is 8h and 58min.

When is the sunrise / sunset in December in South Casco?

In December, on the first day of the month, sunrise is at 6:57 am and sunset at 4:05 pm. On the last day of the month, in South Casco, sunrise is at 7:16 am and sunset at 4:14 pm EST.

What are the months with the least sunshine in South Casco?

February and December, with an average of 4.8h of sunshine, are months with the least sunshine.

How long on average sun shines in December in South Casco?

In December, the average sunshine duration is 4.8h.

What is the month with the lowest UV index in South Casco?

January through March, October through December, with an average maximum UV index of 2, are months with the lowest UV index in South Casco, Maine.

What is the UV index intensity in December in South Casco?

In December, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to Sun's UV rays.
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
South Casco, ME

Average temperature in December - South Casco, ME
  • Average high temperature in December: 33.3°F

The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is January (27.5°F).

  • Average low temperature in December: 23.2°F

The month with the highest average low temperature is July (58.5°F).
The coldest month (with the lowest average low temperature) is January (14.4°F).

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Average pressure in December
South Casco, ME

Average pressure in December - South Casco, 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).

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Average wind speed in December
South Casco, ME

Average wind speed in December - South Casco, ME
  • Average wind speed in December: 7mph

The windiest month (with the highest average wind speed) is January (7.6mph).
The calmest month (with the lowest average wind speed) is August (5mph).

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Average humidity in December
South Casco, ME

Average humidity in December - South Casco, ME
  • Average humidity in December: 79%

The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is November (76%).

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Average rainfall in December
South Casco, ME

Average rainfall in December - South Casco, ME
  • Average rainfall in December: 1.34"

The wettest months (with the highest rainfall) are June and October (1.77").
The driest month (with the least rainfall) is September (0.87").

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Average rainfall days in December
South Casco, ME

Average rainfall days in December - South Casco, ME
  • Average rainfall days in December: 5.9 days

The months with the highest number of rainy days are June and July (14.3 days).
The month with the least rainy days is February (4.4 days).

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Average snowfall in December
South Casco, ME

Average snowfall in December - South Casco, ME
  • Average snowfall in December: 2.99"

The month with the highest snowfall is February (3.35").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in December
South Casco, ME

Average snowfall days in December - South Casco, ME
  • Average snowfall days in December: 5 days

The month with the highest number of snowfall days is February (7.9 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

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Average daylight in December /
Average sunshine in December
South Casco, ME

Average daylight in December / Average sunshine in December - South Casco, 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 18min).
The months with the least sunshine are February and December (Average sunshine: 4h and 48min).

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Average sunshine days in December
South Casco, ME

Average sunshine days in December - South Casco, ME
  • Average sunshine days in December: 20.5 days

The month with the most sunshine days is January (21.3 days).
The month with the least sunshine days is July (13.6 days).

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Average UV index in December
South Casco, ME

Average UV index in December - South Casco, ME
  • Average UV index in December: 2

The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).

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Average cloud cover in December
South Casco, ME

Average cloud cover in December - South Casco, ME
  • Average cloud cover in December: 48

The months with the most cloud cover are February and March (Cloud cover 50).
The months with the least cloud cover are August and September (Cloud cover 34).

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Average visibility in December
South Casco, ME

Average visibility in December - South Casco, ME
  • Average visibility in December: 6mi

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

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South Casco, Maine, USA

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