December weather forecast
Thomaston, ME

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Weather in December

December, the first month of the winter in Thomaston, is still a cold month, with an average temperature fluctuating between 28.4°F (-2°C) and 37°F (2.8°C).

Temperature

December brings a slight decrease in temperature, down from a frosty 45.5°F (7.5°C) in November to a cold 37°F (2.8°C). In December, Thomaston experiences a marginal drop in temperature, with averages of 28.4°F (-2°C) at night.

Humidity

The average relative humidity in December is 77%.

Rainfall

The month with the most rainfall in Thomaston is December, when the rain falls for 11.3 days and typically aggregates up to 3.35" (85mm) of precipitation.

Snowfall

January through April, November and December are months with snowfall. In Thomaston, in December, snow falls for 6.5 days, with typically accumulated 1.81" (46mm) of snow. Throughout the year, in Thomaston, there are 33.1 snowfall days, and 12.36" (314mm) of snow is accumulated.

Ocean temperature

In Thomaston, in December, the average water temperature is 45.1°F (7.3°C).
Note: Diving into 45.1°F (7.3°C) when it's under 50°F (10°C) can cause immediate cold shock symptoms, marked by hyperventilation.

Daylight

With an average of 8h and 54min of daylight, December has the shortest days of the year in Thomaston.
On the first day of December, sunrise is at 6:52 am and sunset at 3:59 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 4:08 pm EST.

Sunshine

The month with the least sunshine in Thomaston is December, with an average of 4.5h 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 in Thomaston, Maine. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for average individuals.
Note: In December, the maximum UV index of 2 suggests these recommendations:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. When the Sun is at its strongest around midday, find shade and limit exposure. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
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Frequently asked questions

How cold is it in Thomaston in December?

The high-temperature, in December, in Thomaston, is 37°F (2.8°C), while the low-temperature averages to 28.4°F (-2°C).

What is the average humidity in December in Thomaston?

In Thomaston, the average relative humidity in December is 77%.

What is the rainiest month in Thomaston?

The month with the most rainfall in Thomaston, Maine, is December, when the rain falls for 11.3 days and typically aggregates up to 3.35" (85mm) of precipitation.

How much does it rain in Thomaston in December?

In Thomaston, Maine, during December, the rain falls for 11.3 days and regularly aggregates up to 3.35" (85mm) of precipitation.

How many days does it snow in December in Thomaston?

In Thomaston, Maine, in December, during 6.5 snowfall days, 1.81" (46mm) of snow is typically accumulated.

How cold is the water in December in Thomaston?

In Thomaston, Maine, in December, the average water temperature is 45.1°F (7.3°C). Swimming in 45.1°F (7.3°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

What is the month with the shortest days in Thomaston?

With an average of 8h and 54min of daylight, December has the shortest days of the year in Thomaston, Maine.

How many hours of daylight does Thomaston have in December?

The average day length in December in Thomaston is 8h and 57min.

When is the sunrise / sunset in December in Thomaston?

In December, on the first day of the month, sunrise is at 6:52 am and sunset at 3:59 pm. On the last day of the month, in Thomaston, sunrise is at 7:11 am and sunset at 4:08 pm EST.

What is the month with the least sunshine in Thomaston?

The month with the least sunshine in Thomaston, Maine, is December, with an average of 4.5h of sunshine.

How long on average sun shines in December in Thomaston?

The average sunshine duration in December in Thomaston, Maine, is 4.5h.

What is the month with the lowest UV index in Thomaston?

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

How high is the UV index in December in Thomaston?

In Thomaston, the average daily maximum UV index in December is 2. 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
Thomaston, ME

Average temperature in December - Thomaston, ME
  • Average high temperature in December: 37°F

The warmest month (with the highest average high temperature) is August (68.7°F).
The month with the lowest average high temperature is January (31.8°F).

  • Average low temperature in December: 28.4°F

The month with the highest average low temperature is August (60.6°F).
The coldest month (with the lowest average low temperature) is January (22.1°F).

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Average pressure in December
Thomaston, ME

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

The month with the highest atmospheric pressure is September (30.04"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in December
Thomaston, ME

Average wind speed in December - Thomaston, ME
  • Average wind speed in December: 14.4mph

The windiest month (with the highest average wind speed) is January (14.9mph).
The calmest months (with the lowest average wind speed) are July and August (8.2mph).

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Average humidity in December
Thomaston, ME

Average humidity in December - Thomaston, ME
  • Average humidity in December: 77%

The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is November (75%).

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Average rainfall in December
Thomaston, ME

Average rainfall in December - Thomaston, ME
  • Average rainfall in December: 3.35"

The wettest month (with the highest rainfall) is December (3.35").
The driest month (with the least rainfall) is September (1.81").

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Average rainfall days in December
Thomaston, ME

Average rainfall days in December - Thomaston, ME
  • Average rainfall days in December: 11.3 days

The month with the highest number of rainy days is April (15.8 days).
The month with the least rainy days is January (7.9 days).

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Average snowfall in December
Thomaston, ME

Average snowfall in December - Thomaston, ME
  • Average snowfall in December: 1.81"

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

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Average snowfall days in December
Thomaston, ME

Average snowfall days in December - Thomaston, ME
  • Average snowfall days in December: 6.5 days

The month with the highest number of snowfall days is January (8.5 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

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Average sea temperature in December
Thomaston, ME

Average sea temperature in December - Thomaston, ME
  • Average sea temperature in December: 45°F

The best month for swimming (with the highest average sea temperature) is August (60.4°F).
The coldest month (with the lowest average sea temperature) is March (37.8°F).

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

Average daylight in December / Average sunshine in December - Thomaston, ME
  • Average daylight in December: 8h and 5min

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 8h and 54min).

  • Average sunshine in December: 4h and 3min

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

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Average sunshine days in December
Thomaston, ME

Average sunshine days in December - Thomaston, ME
  • Average sunshine days in December: 12.3 days

The month with the most sunshine days is September (18 days).
The month with the least sunshine days is April (11.5 days).

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Average UV index in December
Thomaston, ME

Average UV index in December - Thomaston, 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, November and December (UV index 2).

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Average cloud cover in December
Thomaston, ME

Average cloud cover in December - Thomaston, ME
  • Average cloud cover in December: 51

The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 31).

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Average visibility in December
Thomaston, ME

Average visibility in December - Thomaston, 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).

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Thomaston, Maine, USA

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