December weather forecast
Mill Brook, ME

Share

Weather in December

The first month of the winter, December, is also a subzero cold month in Mill Brook, Maine, with an average temperature varying between 29.5°F (-1.4°C) and 18.9°F (-7.3°C).

Temperature

December's onset brings a reduction in the average high-temperature, from an icy 41.5°F (5.3°C) in November to a subzero cold 29.5°F (-1.4°C). Mill Brook experiences an average low-temperature of 18.9°F (-7.3°C) in month of December.

Humidity

In Mill Brook, Maine, the average relative humidity in December is 83%.

Rainfall

In December, in Mill Brook, the rain falls for 9.1 days. Throughout December, 2.52" (64mm) of precipitation is accumulated. In Mill Brook, during the entire year, the rain falls for 146.2 days and collects up to 27.17" (690mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In Mill Brook, in December, snow falls for 12.1 days, with typically accumulated 7.48" (190mm) of snow. In Mill Brook, during the entire year, snow falls for 65.9 days and aggregates up to 37.6" (955mm) of snow.

Daylight

The month with the shortest days is December, with an average of 8h and 48min of daylight.
On the first day of December, sunrise is at 6:56 am and sunset at 3:54 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 4:03 pm EST.

Sunshine

The average sunshine in December is 4.2h.

UV index

The months with the lowest UV index are January through March, October through December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: The maximum daily UV index of 2 in December interprets into the following recommendations:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.

Frequently asked questions

How cold is December?

The average high-temperature, in December, in Mill Brook, is 29.5°F (-1.4°C), while the average low-temperature is 18.9°F (-7.3°C).

What is the average humidity in December?

In Mill Brook, the average relative humidity in December is 83%.

How much does it rain in December?

In Mill Brook, in December, during 9.1 rainfall days, 2.52" (64mm) of precipitation is typically accumulated.

How many days does it snow in December?

In Mill Brook, in December, snow falls for 12.1 days, with typically accumulated 7.48" (190mm) of snow.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 8h and 48min of daylight.

What is the average length of the day in December?

In Mill Brook, the average day length in December is 8h and 47min.

What time are sunrise and sunset in December?

On the first day of December, sunrise is at 6:56 am and sunset at 3:54 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 4:03 pm EST.

How many hours of sunshine does Mill Brook have in December?

In Mill Brook, the average sunshine duration in December is 4.2h.

What is the month with the lowest UV index?

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

What is the UV index intensity in December?

The average daily maximum UV index in December in Mill Brook is 2. A UV Index of 2, and less, symbolizes a minimal hazard to health 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
Mill Brook, ME

Average temperature in December - Mill Brook, ME
  • Average high temperature in December: 29.5°F

The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is January (24.3°F).

  • Average low temperature in December: 18.9°F

The month with the highest average low temperature is July (56.8°F).
The coldest month (with the lowest average low temperature) is January (11.1°F).

Average pressure in December
Mill Brook, ME

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

The months with the highest atmospheric pressure are September and November (30.03"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

Average wind speed in December
Mill Brook, ME

Average wind speed in December - Mill Brook, ME
  • Average wind speed in December: 6.8mph

The windiest month (with the highest average wind speed) is March (7.5mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

Average humidity in December
Mill Brook, ME

Average humidity in December - Mill Brook, ME
  • Average humidity in December: 83%

The month with the highest relative humidity is February (88%).
The month with the lowest relative humidity is May (75%).

Average rainfall in December
Mill Brook, ME

Average rainfall in December - Mill Brook, ME
  • Average rainfall in December: 2.52"

The wettest month (with the highest rainfall) is April (2.91").
The driest month (with the least rainfall) is July (1.57").

Average rainfall days in December
Mill Brook, ME

Average rainfall days in December - Mill Brook, ME
  • Average rainfall days in December: 9.1 days

The month with the highest number of rainy days is July (16.6 days).
The month with the least rainy days is February (6.9 days).

Average snowfall in December
Mill Brook, ME

Average snowfall in December - Mill Brook, ME
  • Average snowfall in December: 7.48"

The month with the highest snowfall is February (8.35").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Mill Brook, ME

Average snowfall days in December - Mill Brook, ME
  • Average snowfall days in December: 12.1 days

The month with the highest number of snowfall days is February (15.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Mill Brook, ME

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

The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).

  • Average sunshine in December: 4h and 1min

The month with the most sunshine is August (Average sunshine: 9h and 42min).
The month with the least sunshine is February (Average sunshine: 3h and 42min).

Average sunshine days in December
Mill Brook, ME

Average sunshine days in December - Mill Brook, ME
  • Average sunshine days in December: 14 days

The month with the most sunshine days is September (16.5 days).
The month with the least sunshine days is April (10.7 days).

Average UV index in December
Mill Brook, ME

Average UV index in December - Mill Brook, 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, October, November and December (UV index 2).

Average cloud cover in December
Mill Brook, ME

Average cloud cover in December - Mill Brook, ME
  • Average cloud cover in December: 55

The month with the most cloud cover is February (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 40).

Average visibility in December
Mill Brook, ME

Average visibility in December - Mill Brook, ME
  • Average visibility in December: 5mi

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

Mill Brook, Maine, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location