December weather forecast
Sinclair, ME

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Weather in December

The first month of the winter, December, is also a subzero cold month in Sinclair, Maine, with an average temperature ranging between max 23.9°F (-4.5°C) and min 12.2°F (-11°C).

Temperature

The transition into December indicates a reduction in the average high-temperature, down to a subzero cold 23.9°F (-4.5°C) from November's cold 36.5°F (2.5°C). Throughout December in Sinclair, a steady low-temperature average of 12.2°F (-11°C) is noted.

Humidity

The average relative humidity in December is 90%.

Rainfall

In Sinclair, during December, the rain falls for 7.8 days and regularly aggregates up to 2.76" (70mm) of precipitation. Throughout the year, there are 140.8 rainfall days, and 30.12" (765mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. In Sinclair, in December, during 17.8 snowfall days, 12.28" (312mm) of snow is typically accumulated. Throughout the year, there are 107.8 snowfall days, and 71.34" (1812mm) of snow is accumulated.

Daylight

The month with the shortest days in Sinclair is December, with an average of 8h and 36min of daylight.
On the first day of December, sunrise is at 6:59 am and sunset at 3:45 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 3:53 pm EST.

Sunshine

The average sunshine in December is 2.9h.

UV index

The months with the lowest UV index in Sinclair, Maine, are January through March, November and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: A maximum daily UV index of 1 during December morphs into the following directions:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
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Frequently asked questions

How cold is it in Sinclair in December?

During December, Sinclair experiences an average high-temperature of 23.9°F (-4.5°C) and a low-temperature of 12.2°F (-11°C).

What is the average humidity in December in Sinclair?

In December, the average relative humidity is 90%.

How many days does it rain in December in Sinclair?

In Sinclair, in December, it is raining for 7.8 days, with typically 2.76" (70mm) of accumulated precipitation.

How many days does it snow in December in Sinclair?

In Sinclair, during December, snow falls for 17.8 days and regularly aggregates up to 12.28" (312mm) of snow.

What is the month with the shortest days in Sinclair?

With an average of 8h and 36min of daylight, December has the shortest days of the year.

What is the average length of the day in December in Sinclair?

In December, the average day length in Sinclair is 8h and 34min.

What time are sunrise and sunset in December in Sinclair?

In December, on the first day of the month, sunrise is at 6:59 am and sunset at 3:45 pm. On the last day of the month, in Sinclair, Maine, sunrise is at 7:19 am and sunset at 3:53 pm EST.

How many hours of sunshine does Sinclair have in December?

In December, the average sunshine duration in Sinclair is 2.9h.

When is the lowest UV index in Sinclair?

January through March, November and December, with an average maximum UV index of 1, are months with the lowest UV index.

How high is the UV index in December in Sinclair?

The average daily maximum UV index in December in Sinclair is 1. A UV Index reading of 2, and below, represents a minimal hazard to health from unsafe 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
Sinclair, ME

Average temperature in December - Sinclair, ME
  • Average high temperature in December: 23.9°F

The warmest month (with the highest average high temperature) is July (74.3°F).
The month with the lowest average high temperature is January (18°F).

  • Average low temperature in December: 12.2°F

The month with the highest average low temperature is July (53.6°F).
The coldest month (with the lowest average low temperature) is January (2.8°F).

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Average pressure in December
Sinclair, ME

Average pressure in December - Sinclair, ME
  • Average pressure in December: 30"Hg

The months with the highest atmospheric pressure are March, September and November (30.01"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

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Average wind speed in December
Sinclair, ME

Average wind speed in December - Sinclair, ME
  • Average wind speed in December: 7.7mph

The windiest months (with the highest average wind speed) are January and February (8.2mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).

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Average humidity in December
Sinclair, ME

Average humidity in December - Sinclair, ME
  • Average humidity in December: 90%

The month with the highest relative humidity is March (94%).
The month with the lowest relative humidity is May (76%).

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Average rainfall in December
Sinclair, ME

Average rainfall in December - Sinclair, ME
  • Average rainfall in December: 2.76"

The wettest month (with the highest rainfall) is April (2.95").
The driest month (with the least rainfall) is February (1.97").

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Average rainfall days in December
Sinclair, ME

Average rainfall days in December - Sinclair, ME
  • Average rainfall days in December: 7.8 days

The month with the highest number of rainy days is July (17.1 days).
The months with the least rainy days are January and February (4.3 days).

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Average snowfall in December
Sinclair, ME

Average snowfall in December - Sinclair, ME
  • Average snowfall in December: 12.28"

The month with the highest snowfall is January (14.92").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Sinclair, ME

Average snowfall days in December - Sinclair, ME
  • Average snowfall days in December: 17.8 days

The month with the highest number of snowfall days is January (21.3 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
Sinclair, ME

Average daylight in December / Average sunshine in December - Sinclair, ME
  • Average daylight in December: 8h and 4min

The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 36min).

  • Average sunshine in December: 2h and 5min

The month with the most sunshine is August (Average sunshine: 9h and 30min).
The month with the least sunshine is February (Average sunshine: 2h and 6min).

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Average sunshine days in December
Sinclair, ME

Average sunshine days in December - Sinclair, ME
  • Average sunshine days in December: 11.5 days

The month with the most sunshine days is September (14.5 days).
The month with the least sunshine days is April (7.9 days).

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Average UV index in December
Sinclair, ME

Average UV index in December - Sinclair, ME
  • Average UV index in December: 1

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

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Average cloud cover in December
Sinclair, ME

Average cloud cover in December - Sinclair, ME
  • Average cloud cover in December: 70

The month with the most cloud cover is February (Cloud cover 75).
The month with the least cloud cover is July (Cloud cover 42).

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Average visibility in December
Sinclair, ME

Average visibility in December - Sinclair, ME
  • Average visibility in December: 4mi

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

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Sinclair, Maine, USA

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