December weather forecast
Orono, ME

Weather in December

December, the first month of the winter, in Orono, is also a wintry month, with average temperature fluctuating between 32.2°F (0.1°C) and 21.6°F (-5.8°C).

Temperature

In Orono, Maine, the average high-temperature decreases, from a chilly 43.3°F (6.3°C) in November, to a wintry 32.2°F (0.1°C). The average low-temperature, in Orono, is 21.6°F (-5.8°C).

Humidity

In December, the average relative humidity is 81%.

Rainfall

The month with the most rainfall is December when the rain falls for 10.6 days and typically aggregates up to 3.27" (83mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In Orono, during December, snow falls for 11.2 days and regularly aggregates up to 6.61" (168mm) of snow. In Orono, Maine, during the entire year, snow falls for 61.1 days, and aggregates up to 36.34" (923mm) of snow.

Daylight

The month with the shortest days in Orono is December, with an average of 8.8h of daylight.

Sunshine

In Orono, the average sunshine in December is 4.3h.

UV index

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Orono. A UV Index value of 2, and less, symbolizes a minimal health hazard from unsafe exposure to the UV radiation for the ordinary person.
Note: The average daily UV index of 2 transform into the following instructions:
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 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 average humidity in December in Orono?

The average relative humidity in December in Orono, Maine, is 81%.

What is the wettest month in Orono?

December is the month with the most rainfall in Orono. Rain falls for 10.6 days and accumulates 3.27" (83mm) of precipitation.

How much does it rain in Orono in December?

In Orono, Maine, during December, the rain falls for 10.6 days and regularly aggregates up to 3.27" (83mm) of precipitation.

How many days does it snow in December in Orono?

In Orono, in December, snow falls for 11.2 days, with typically accumulated 6.61" (168mm) of snow.

What is the month with the shortest days in Orono?

December has the shortest days of the year in Orono, with an average of 8.8h of daylight.

How many hours of daylight does Orono have in December?

In Orono, the average length of the day in December is 8.8h.

How long on average sun shines in December in Orono?

The average sunshine in December in Orono, Maine, is 4.3h.

When is the lowest UV index in Orono?

Months with the lowest UV index in Orono are January through March, November and December, with an average maximum UV index of 2.

What is the UV index reading in December in Orono?

In Orono, the average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a minimal hazard to health from unsafe exposure to the Sun's UV rays.

Average temperature in December
Orono, ME

Average temperature in December - Orono, ME
  • Average high temperature in December: 32.2°F

The warmest month (with the highest average high temperature) is July (78.1°F).
The month with the lowest average high temperature is January (26.6°F).

  • Average low temperature in December: 21.6°F

The month with the highest average low temperature is July (57°F).
The coldest month (with the lowest average low temperature) is January (13.5°F).

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Average pressure in December
Orono, ME

Average pressure in December - Orono, ME
  • Average pressure in December: 30"

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

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Average wind speed in December
Orono, ME

Average wind speed in December - Orono, ME
  • Average wind speed in December: 7.2mph

The windiest month (with the highest average wind speed) is March (7.9mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

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Average humidity in December
Orono, ME

Average humidity in December - Orono, ME
  • Average humidity in December: 81%

The month with the highest relative humidity is February (86%).
The month with the lowest relative humidity is May (76%).

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Average rainfall in December
Orono, ME

Average rainfall in December - Orono, ME
  • Average rainfall in December: 3.27"

The wettest month (with the highest rainfall) is December (3.27").
The driest month (with the least rainfall) is July (1.61").

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Average rainfall days in December
Orono, ME

Average rainfall days in December - Orono, ME
  • Average rainfall days in December: 10.6 days

The month with the highest number of rainy days is May (16.6 days).
The month with the least rainy days is January (8.1 days).

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Average snowfall in December
Orono, ME

Average snowfall in December - Orono, ME
  • Average snowfall in December: 6.61"

The month with the highest snowfall is January (8.43").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Orono, ME

Average snowfall days in December - Orono, ME
  • Average snowfall days in December: 11.2 days

The month with the highest number of snowfall days is February (13.8 days).
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
Orono, ME

Average daylight in December / Average sunshine in December - Orono, ME
  • Average daylight in December: 8.8h

The month with the longest days is June (Average daylight: 15.5h).
The month with the shortest days is December (Average daylight: 8.8h).

  • Average sunshine in December: 4.3h

The month with the most sunshine is August (Average sunshine: 9.9h).
The month with the least sunshine is February (Average sunshine: 3.9h).

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Average sunshine days in December
Orono, ME

Average sunshine days in December - Orono, ME
  • Average sunshine days in December: 13.5 days

The month with the most sunshine days is September (17.1 days).
The month with the least sunshine days is April (10.1 days).

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Average UV index in December
Orono, ME

Average UV index in December - Orono, ME
  • Average UV index in December: 2

Months with the highest UV index are June, July and August (UV index 5).
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
Orono, ME

Average cloud cover in December - Orono, ME
  • Average cloud cover in December: 53

The month with the most cloud cover is February (Cloud cover 57).
Months with the least cloud cover are August and September (Cloud cover 39).

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Average visibility in December
Orono, ME

Average visibility in December - Orono, ME
  • Average visibility in December: 5mi

The month with the highest visibility is October (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, November and December (5mi).

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