December weather forecast
Hay Brook, ME

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Weather in December

The first month of the winter, December, is also a subzero cold month in Hay Brook, Maine, with an average temperature fluctuating between 28.2°F (-2.1°C) and 18.1°F (-7.7°C).

Temperature

A shift in Hay Brook's weather is observed as November turns into December, with the average high temperature reducing from a cold 40.1°F (4.5°C) to a freezing cold 28.2°F (-2.1°C). In Hay Brook, the expected average low-temperature for December is 18.1°F (-7.7°C).

Humidity

In December, the average relative humidity in Hay Brook is 84%.

Rainfall

In Hay Brook, during December, the rain falls for 10.5 days and regularly aggregates up to 2.6" (66mm) of precipitation. In Hay Brook, during the entire year, the rain falls for 156.1 days and collects up to 26.89" (683mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Hay Brook. In Hay Brook, in December, snow falls for 14.5 days, with typically accumulated 8.78" (223mm) of snow. In Hay Brook, during the entire year, snow falls for 78.3 days and aggregates up to 45.63" (1159mm) of snow.

Daylight

With an average of 8h and 42min of daylight, December has the shortest days of the year in Hay Brook.
On the first day of the month, sunrise is at 6:55 am and sunset at 3:51 pm. On the last day of December, in Hay Brook, sunrise is at 7:15 am and sunset at 3:59 pm EST.

Sunshine

The average sunshine in December in Hay Brook is 4.1h.

UV index

February and December, with an average maximum UV index of 1, are months with the lowest UV index in Hay Brook. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: In December, an average UV index of 1 transforms into the following instructions:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is December in Hay Brook?

The high-temperature, in December, in Hay Brook, records 28.2°F (-2.1°C), while the low-temperature is 18.1°F (-7.7°C).

What is the average humidity in December in Hay Brook?

In Hay Brook, Maine, the average relative humidity in December is 84%.

How much does it rain in Hay Brook in December?

In Hay Brook, Maine, in December, it is raining for 10.5 days, with typically 2.6" (66mm) of accumulated precipitation.

How many days does it snow in December in Hay Brook?

In Hay Brook, Maine, during December, snow falls for 14.5 days and regularly aggregates up to 8.78" (223mm) of snow.

What is the month with the shortest days in Hay Brook?

With an average of 8h and 42min of daylight, December has the shortest days of the year in Hay Brook, Maine.

What is the average length of the day in December in Hay Brook?

In December, the average day length in Hay Brook is 8h and 45min.

When are sunrise and sunset in December in Hay Brook?

On the first day of December in Hay Brook, Maine, sunrise is at 6:55 am and sunset at 3:51 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 3:59 pm EST.

How long on average sun shines in December in Hay Brook?

In December, the average sunshine duration in Hay Brook is 4.1h.

What are the months with the lowest UV index in Hay Brook?

February and December, with an average maximum UV index of 1, are months with the lowest UV index in Hay Brook, Maine.

What is the UV index intensity in December in Hay Brook?

In December, the average daily maximum UV index in Hay Brook is 1. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to 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
Hay Brook, ME

Average temperature in December - Hay Brook, ME
  • Average high temperature in December: 28.2°F

The warmest month (with the highest average high temperature) is July (76.6°F).
The month with the lowest average high temperature is January (22.6°F).

  • Average low temperature in December: 18.1°F

The month with the highest average low temperature is July (55.9°F).
The coldest month (with the lowest average low temperature) is January (9.7°F).

Average pressure in December
Hay Brook, ME

Average pressure in December - Hay 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
Hay Brook, ME

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

The windiest month (with the highest average wind speed) is March (7.4mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

Average humidity in December
Hay Brook, ME

Average humidity in December - Hay Brook, ME
  • Average humidity in December: 84%

The months with the highest relative humidity are February and March (89%).
The month with the lowest relative humidity is May (75%).

Average rainfall in December
Hay Brook, ME

Average rainfall in December - Hay Brook, ME
  • Average rainfall in December: 2.6"

The wettest month (with the highest rainfall) is April (2.83").
The driest months (with the least rainfall) are March and July (1.73").

Average rainfall days in December
Hay Brook, ME

Average rainfall days in December - Hay Brook, ME
  • Average rainfall days in December: 10.5 days

The month with the highest number of rainy days is June (17.1 days).
The month with the least rainy days is February (7.3 days).

Average snowfall in December
Hay Brook, ME

Average snowfall in December - Hay Brook, ME
  • Average snowfall in December: 8.78"

The month with the highest snowfall is February (10.24").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Hay Brook, ME

Average snowfall days in December - Hay Brook, ME
  • Average snowfall days in December: 14.5 days

The month with the highest number of snowfall days is February (16.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Hay Brook, ME
  • Average daylight in December: 8h and 4min

The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).

  • Average sunshine in December: 4h and 1min

The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is February (Average sunshine: 3h and 18min).

Average sunshine days in December
Hay Brook, ME

Average sunshine days in December - Hay Brook, ME
  • Average sunshine days in December: 12.8 days

The month with the most sunshine days is September (16.3 days).
The month with the least sunshine days is April (9.3 days).

Average UV index in December
Hay Brook, ME

Average UV index in December - Hay Brook, 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 February and December (UV index 1).

Average cloud cover in December
Hay Brook, ME

Average cloud cover in December - Hay Brook, ME
  • Average cloud cover in December: 58

The month with the most cloud cover is February (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 40).

Average visibility in December
Hay Brook, ME

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

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

Hay Brook, Maine, USA

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