December weather forecast
Adams, MA

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Weather in December

December, the first month of the winter in Adams, is still a cold month, with an average temperature fluctuating between 21.7°F (-5.7°C) and 32.5°F (0.3°C).

Temperature

Transition from November to December is accompanied by a temperature drop, with average high-temperatures decreasing from a chilly 42.8°F (6°C) to a wintry 32.5°F (0.3°C). Throughout December nights, Adams experiences a consistent temperature average of 21.7°F (-5.7°C).

Humidity

In December, the average relative humidity is 85%.

Rainfall

In Adams, in December, during 9.6 rainfall days, 1.81" (46mm) of precipitation is typically accumulated. In Adams, during the entire year, the rain falls for 149.4 days and collects up to 24.53" (623mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Adams, Massachusetts. In Adams, Massachusetts, in December, during 13.8 snowfall days, 5.08" (129mm) of snow is typically accumulated. In Adams, during the entire year, snow falls for 77.5 days and aggregates up to 32.32" (821mm) of snow.

Daylight

The month with the shortest days in Adams is December, with an average of 9h and 6min of daylight.
On the first day of December in Adams, sunrise is at 7:03 am and sunset at 4:20 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 4:29 pm EST.

Sunshine

In Adams, the average sunshine in December is 3.8h.

UV index

January through March, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Adams. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: In December, an average UV index of 2 transforms into the following instructions:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. When the Sun is at its strongest around midday, find shade and limit exposure. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
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Frequently asked questions

How cold is December in Adams?

The average high-temperature, in December, in Adams, is 32.5°F (0.3°C), while the average low-temperature is 21.7°F (-5.7°C).

What is the average humidity in December in Adams?

The average relative humidity in December is 85%.

How much does it rain in Adams in December?

In Adams, in December, during 9.6 rainfall days, 1.81" (46mm) of precipitation is typically accumulated.

How many days does it snow in December in Adams?

In Adams, Massachusetts, during December, snow falls for 13.8 days and regularly aggregates up to 5.08" (129mm) of snow.

What is the month with the shortest days in Adams?

With an average of 9h and 6min of daylight, December has the shortest days of the year in Adams, Massachusetts.

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

In December, the average day length in Adams is 9h and 7min.

What time are sunrise and sunset in December in Adams?

On the first day of December in Adams, sunrise is at 7:03 am and sunset at 4:20 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 4:29 pm EST.

How many hours of sunshine does Adams have in December?

In Adams, the average sunshine duration in December is 3.8h.

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

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

What is the UV index intensity in December in Adams?

In December, the average daily maximum UV index in Adams, Massachusetts, is 2. A UV Index estimate of 2, and below, represents a minimal hazard to health from unsafe 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
Adams, MA

Average temperature in December - Adams, MA
  • Average high temperature in December: 32.5°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: 21.7°F

The month with the highest average low temperature is July (57.7°F).
The coldest month (with the lowest average low temperature) is January (14.4°F).

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Average pressure in December
Adams, MA

Average pressure in December - Adams, MA
  • Average pressure in December: 30.05"Hg

The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in December
Adams, MA

Average wind speed in December - Adams, MA
  • Average wind speed in December: 8.6mph

The windiest months (with the highest average wind speed) are January and February (8.9mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

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Average humidity in December
Adams, MA

Average humidity in December - Adams, MA
  • Average humidity in December: 85%

The month with the highest relative humidity is February (86%).
The month with the lowest relative humidity is April (77%).

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Average rainfall in December
Adams, MA

Average rainfall in December - Adams, MA
  • Average rainfall in December: 1.81"

The wettest months (with the highest rainfall) are May and October (2.56").
The driest months (with the least rainfall) are January and February (1.46").

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Average rainfall days in December
Adams, MA

Average rainfall days in December - Adams, MA
  • Average rainfall days in December: 9.6 days

The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is February (6.8 days).

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Average snowfall in December
Adams, MA

Average snowfall in December - Adams, MA
  • Average snowfall in December: 5.08"

The month with the highest snowfall is February (5.59").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Adams, MA

Average snowfall days in December - Adams, MA
  • Average snowfall days in December: 13.8 days

The month with the highest number of snowfall days is February (16.7 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
Adams, MA

Average daylight in December / Average sunshine in December - Adams, MA
  • Average daylight in December: 9h and 1min

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in December: 3h and 5min

The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is February (Average sunshine: 3h and 24min).

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Average sunshine days in December
Adams, MA

Average sunshine days in December - Adams, MA
  • Average sunshine days in December: 13 days

The month with the most sunshine days is November (16.2 days).
The month with the least sunshine days is February (9.6 days).

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Average UV index in December
Adams, MA

Average UV index in December - Adams, MA
  • 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).

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Average cloud cover in December
Adams, MA

Average cloud cover in December - Adams, MA
  • Average cloud cover in December: 60

The month with the most cloud cover is February (Cloud cover 63).
The month with the least cloud cover is July (Cloud cover 38).

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Average visibility in December
Adams, MA

Average visibility in December - Adams, MA
  • 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).

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Adams, Massachusetts, USA

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