December weather forecast
Caribou, ME

Weather in December

The first month of the winter, December, is also a subzero cold month in Caribou, Maine, with temperature in the range of an average high of 25°F (-3.9°C) and an average low of 13.3°F (-10.4°C).

Temperature

In Caribou, the average high-temperature in December decreases from a cold 37.4°F (3°C) in November to a subzero cold 25°F (-3.9°C). In December, the average low-temperature is 13.3°F (-10.4°C).

Humidity

In Caribou, the average relative humidity in December is 89%.

Rainfall

In Caribou, it is raining for 7.9 days, with typically 3.19" (81mm) of accumulated precipitation. Throughout the year, in Caribou, there are 144 rainfall days, and 32.95" (837mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. In Caribou, Maine, during 17.5 snowfall days, 13.7" (348mm) of snow is typically accumulated. In Caribou, Maine, during the entire year, snow falls for 104.9 days and aggregates up to 73.35" (1863mm) of snow.

Daylight

December has the shortest days of the year, with an average of 8h and 37min of daylight.
On the first day of the month, sunrise is at 6:56 am and sunset at 3:45 pm. On the last day of December, in Caribou, sunrise is at 7:17 am and sunset at 3:52 pm EST.

Sunshine

The average sunshine in December in Caribou, Maine, is 3h.

UV index

The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for average individuals.
Note: In December, the average maximum UV index of 1 translate into the following recommendations:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in December in Caribou?

The average high-temperature, in December, is 25°F (-3.9°C), while the average low-temperature is 13.3°F (-10.4°C).

What is the average humidity in December in Caribou?

In December, the average relative humidity in Caribou, Maine, is 89%.

How much does it rain in Caribou in December?

In Caribou, Maine, during December, the rain falls for 7.9 days and regularly aggregates up to 3.19" (81mm) of precipitation.

How much does it snow in Caribou in December?

In December, in Caribou, it is snowing for 17.5 days. Throughout December, 13.7" (348mm) of snow is accumulated.

What is the month with the shortest days in Caribou?

The month with the shortest days in Caribou, Maine, is December, with an average of 8h and 37min of daylight.

How many hours of daylight does Caribou have in December?

In Caribou, Maine, the average day length in December is 8h and 37min.

When are sunrise and sunset in December in Caribou?

On the first day of December in Caribou, sunrise is at 6:56 am and sunset at 3:45 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 3:52 pm EST.

How many hours of sunshine does Caribou have in December?

The average sunshine duration in December in Caribou is 3h.

What are the months with the lowest UV index in Caribou?

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

How high is the UV index in December in Caribou?

The average daily maximum UV index in December in Caribou, Maine, is 1. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's 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
Caribou, ME

Average temperature in December - Caribou, ME
  • Average high temperature in December: 25°F

The warmest month (with the highest average high temperature) is July (75°F).
The month with the lowest average high temperature is January (19.4°F).

  • Average low temperature in December: 13.3°F

The month with the highest average low temperature is July (54.7°F).
The coldest month (with the lowest average low temperature) is January (4.3°F).

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Average pressure in December
Caribou, ME

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

The month with the highest atmospheric pressure is September (30.02"Hg).
The months with the lowest atmospheric pressure are June and July (29.89"Hg).

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Average wind speed in December
Caribou, ME

Average wind speed in December - Caribou, ME
  • Average wind speed in December: 7.6mph

The windiest months (with the highest average wind speed) are February and March (8.1mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).

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Average humidity in December
Caribou, ME

Average humidity in December - Caribou, ME
  • Average humidity in December: 89%

The months with the highest relative humidity are February and March (93%).
The month with the lowest relative humidity is May (75%).

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Average rainfall in December
Caribou, ME

Average rainfall in December - Caribou, ME
  • Average rainfall in December: 3.19"

The wettest month (with the highest rainfall) is April (3.46").
The driest month (with the least rainfall) is February (2.2").

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Average rainfall days in December
Caribou, ME

Average rainfall days in December - Caribou, ME
  • Average rainfall days in December: 7.9 days

The month with the highest number of rainy days is June (16.9 days).
The month with the least rainy days is January (4.2 days).

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Average snowfall in December
Caribou, ME

Average snowfall in December - Caribou, ME
  • Average snowfall in December: 13.7"

The month with the highest snowfall is January (15.91").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Caribou, ME

Average snowfall days in December - Caribou, ME
  • Average snowfall days in December: 17.5 days

The month with the highest number of snowfall days is February (21 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
Caribou, ME

Average daylight in December / Average sunshine in December - Caribou, ME
  • Average daylight in December: 8h and 37min

The month with the longest days is June (Average daylight: 15h and 49min).
The month with the shortest days is December (Average daylight: 8h and 37min).

  • Average sunshine in December: 3h and 0min

The month with the most sunshine is August (Average sunshine: 9h and 24min).
The month with the least sunshine is February (Average sunshine: 2h and 6min).

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Average sunshine days in December
Caribou, ME

Average sunshine days in December - Caribou, ME
  • Average sunshine days in December: 11.1 days

The month with the most sunshine days is September (14.7 days).
The month with the least sunshine days is February (7.8 days).

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Average UV index in December
Caribou, ME

Average UV index in December - Caribou, 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
Caribou, ME

Average cloud cover in December - Caribou, ME
  • Average cloud cover in December: 69

The month with the most cloud cover is February (Cloud cover 75).
The months with the least cloud cover are July and August (Cloud cover 43).

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Average visibility in December
Caribou, ME

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

The month with the highest visibility is May (6mi).
The months with the lowest visibility are January, February, March, April and December (4mi).

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