Caribou
Maine, USA
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Caribou, ME

December, the first month of the winter, in Caribou, is also a subzero cold month, with average temperature ranging between max 25°F (-3.9°C) and min 13.3°F (-10.4°C).

Temperature

In December, the average high-temperature decreases, from a cold 37.4°F (3°C) in November, to a subzero cold 25°F (-3.9°C). In December, in Caribou, 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, 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 December, in Caribou, it is snowing for 17.5 days. Throughout December, 13.7" (348mm) of snow is accumulated. Throughout the year, in Caribou, there are 104.9 snowfall days, and 73.35" (1863mm) of snow is accumulated.

Daylight

With an average of 8.6h of daylight, December has the shortest days of the year in Caribou, Maine.

Sunshine

In Caribou, the average sunshine is 3h.

UV index

Months with the lowest UV index are January through March, November and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from the exposure to the Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 1 transform into the following instructions:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. 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 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.

What is the temperature in December in Caribou?

The average high-temperature, in December, in Caribou, 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?

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

How many days does it rain in December in Caribou?

In Caribou, 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, Maine, 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?

December has the shortest days of the year, with an average of 8.6h of daylight.

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

In Caribou, Maine, the average length of the day in December is 8.6h.

How many hours of sunshine does Caribou have in December?

In Caribou, Maine, the average sunshine in December is 3h.

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

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 Caribou?

In December, the average daily maximum UV index is 1. A UV Index of 2, and less, symbolizes a low health risk from the exposure to the Sun's UV radiation.
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).

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

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

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").

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).

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

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

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).
Months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December / Average sunshine in December - Caribou, ME
  • Average daylight in December: 8.6h

The month with the longest days is June (Average daylight: 15.8h).
The month with the shortest days is December (Average daylight: 8.6h).

  • Average sunshine in December: 3h

The month with the most sunshine is August (Average sunshine: 9.4h).
The month with the least sunshine is February (Average sunshine: 2.1h).

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

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