December weather forecast
Grand Lake Stream, ME

Weather in December

December, the first month of the winter in Grand Lake Stream, is also a subzero cold month, with an average temperature fluctuating between 31.1°F (-0.5°C) and 20.3°F (-6.5°C).

Temperature

In December, the average high-temperature decreases from a cold 42.1°F (5.6°C) in November to a freezing cold 31.1°F (-0.5°C). The average low-temperature, in Grand Lake Stream, is 20.3°F (-6.5°C).

Humidity

In December, the average relative humidity in Grand Lake Stream is 83%.

Rainfall

In Grand Lake Stream, during December, the rain falls for 8.7 days and regularly aggregates up to 1.46" (37mm) of precipitation. Throughout the year, there are 122.6 rainfall days, and 14.53" (369mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Grand Lake Stream are January through May, October through December. In December, it is snowing for 10.3 days. Throughout December, 3.11" (79mm) of snow is accumulated. Throughout the year, in Grand Lake Stream, there are 60.6 snowfall days, and 17.91" (455mm) of snow is accumulated.

Daylight

December has the shortest days of the year in Grand Lake Stream, Maine, with an average of 8h and 49min of daylight.
On the first day of the month, sunrise is at 6:49 am and sunset at 3:50 pm. On the last day of December, sunrise is at 7:09 am and sunset at 3:58 pm EST.

Sunshine

The average sunshine in December in Grand Lake Stream, Maine, is 4h.

UV index

The months with the lowest UV index are February, November and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily maximum UV index of 1 in December interpret into the following advice:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the temperature in December in Grand Lake Stream?

In December, the average high-temperature is 31.1°F (-0.5°C), and the average low-temperature is 20.3°F (-6.5°C).

What is the average humidity in December in Grand Lake Stream?

The average relative humidity in December is 83%.

How much does it rain in Grand Lake Stream in December?

In Grand Lake Stream, during December, the rain falls for 8.7 days and regularly aggregates up to 1.46" (37mm) of precipitation.

How much does it snow in Grand Lake Stream in December?

In Grand Lake Stream, in December, during 10.3 snowfall days, 3.11" (79mm) of snow is typically accumulated.

What is the month with the shortest days in Grand Lake Stream?

With an average of 8h and 49min of daylight, December has the shortest days of the year in Grand Lake Stream, Maine.

How many hours of daylight does Grand Lake Stream have in December?

In December, the average day length in Grand Lake Stream is 8h and 49min.

When is the sunrise / sunset in December in Grand Lake Stream?

On the first day of December, sunrise is at 6:49 am and sunset at 3:50 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 3:58 pm EST.

How long on average sun shines in December in Grand Lake Stream?

The average sunshine duration in December is 4h.

What is the month with the lowest UV index in Grand Lake Stream?

February, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Grand Lake Stream, Maine.

What is the UV index intensity in December in Grand Lake Stream?

The average daily maximum UV index in December in Grand Lake Stream, Maine, is 1. A UV Index reading of 2, and below, represents a low health threat 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
Grand Lake Stream, ME

Average temperature in December - Grand Lake Stream, ME
  • Average high temperature in December: 31.1°F

The warmest month (with the highest average high temperature) is July (77.2°F).
The month with the lowest average high temperature is January (25.5°F).

  • Average low temperature in December: 20.3°F

The month with the highest average low temperature is July (56.1°F).
The coldest month (with the lowest average low temperature) is January (12.4°F).

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Average pressure in December
Grand Lake Stream, ME

Average pressure in December - Grand Lake Stream, ME
  • Average pressure in December: 29.99"Hg

The month with the highest atmospheric pressure is September (30.03"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in December
Grand Lake Stream, ME

Average wind speed in December - Grand Lake Stream, ME
  • Average wind speed in December: 7.4mph

The windiest month (with the highest average wind speed) is March (8mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).

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Average humidity in December
Grand Lake Stream, ME

Average humidity in December - Grand Lake Stream, ME
  • Average humidity in December: 83%

The month with the highest relative humidity is February (88%).
The month with the lowest relative humidity is May (77%).

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Average rainfall in December
Grand Lake Stream, ME

Average rainfall in December - Grand Lake Stream, ME
  • Average rainfall in December: 1.46"

The wettest month (with the highest rainfall) is November (1.61").
The driest month (with the least rainfall) is September (0.91").

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Average rainfall days in December
Grand Lake Stream, ME

Average rainfall days in December - Grand Lake Stream, ME
  • Average rainfall days in December: 8.7 days

The month with the highest number of rainy days is April (14.2 days).
The month with the least rainy days is February (5.1 days).

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Average snowfall in December
Grand Lake Stream, ME

Average snowfall in December - Grand Lake Stream, ME
  • Average snowfall in December: 3.11"

The month with the highest snowfall is February (3.7").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Grand Lake Stream, ME

Average snowfall days in December - Grand Lake Stream, ME
  • Average snowfall days in December: 10.3 days

The month with the highest number of snowfall days is March (13.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in December /
Average sunshine in December
Grand Lake Stream, ME

Average daylight in December / Average sunshine in December - Grand Lake Stream, ME
  • Average daylight in December: 8h and 49min

The month with the longest days is June (Average daylight: 15h and 35min).
The month with the shortest days is December (Average daylight: 8h and 49min).

  • Average sunshine in December: 4h and 0min

The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is February (Average sunshine: 3h and 18min).

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Average sunshine days in December
Grand Lake Stream, ME

Average sunshine days in December - Grand Lake Stream, ME
  • Average sunshine days in December: 16.1 days

The month with the most sunshine days is September (18.4 days).
The month with the least sunshine days is April (11.6 days).

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Average UV index in December
Grand Lake Stream, ME

Average UV index in December - Grand Lake Stream, ME
  • Average UV index in December: 1

The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are February, November and December (UV index 1).

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Average cloud cover in December
Grand Lake Stream, ME

Average cloud cover in December - Grand Lake Stream, ME
  • Average cloud cover in December: 58

The month with the most cloud cover is February (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 42).

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Average visibility in December
Grand Lake Stream, ME

Average visibility in December - Grand Lake Stream, ME
  • Average visibility in December: 5mi

The months with the highest visibility are January, March, April, May, June, July, August, September, October, November and December (5mi).
The month with the lowest visibility is February (4mi).

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