December weather forecast
Reading, MA

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Weather in December

December, the first month of the winter in Reading, is also a wintry month, with an average temperature ranging between max 38.8°F (3.8°C) and min 28.9°F (-1.7°C).

Temperature

Onset of December comes with a temperature decline, the average high falling from a chilly 49.1°F (9.5°C) in November to a wintry 38.8°F (3.8°C). Throughout December, an average nighttime temperature of 28.9°F (-1.7°C) is experienced.

Humidity

The average relative humidity in December in Reading is 76%.

Rainfall

The month with the most rainfall in Reading, Massachusetts, is December, when the rain falls for 9.2 days and typically aggregates up to 2.87" (73mm) of precipitation.

Snowfall

Months with snowfall in Reading are January through May, October through December. In Reading, in December, during 5.5 snowfall days, 4.33" (110mm) of snow is typically accumulated. In Reading, during the entire year, snow falls for 30.6 days and aggregates up to 18.86" (479mm) of snow.

Daylight

The month with the shortest days is December, with an average of 9h and 6min of daylight.
On the first day of December in Reading, sunrise is at 6:55 am and sunset at 4:12 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 4:21 pm EST.

Sunshine

In December, the average sunshine in Reading is 4.8h.

UV index

The months with the lowest UV index in Reading are January through March, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In December, the maximum UV index of 2 suggests this advice:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
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Frequently asked questions

Is December cold in Reading?

The average high-temperature and low-temperature in Reading during December are 38.8°F (3.8°C) and 28.9°F (-1.7°C) respectively. In August, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which combines relative humidity and air temperature, is calculated to be 84.2°F (29°C).

What is the average humidity in December in Reading?

In Reading, the average relative humidity in December is 76%.

What is the wettest month in Reading?

The month with the most rainfall in Reading, Massachusetts, is December, when the rain falls for 9.2 days and typically aggregates up to 2.87" (73mm) of precipitation.

How many days does it rain in December in Reading?

In December, the rain falls for 9.2 days. Throughout December, 2.87" (73mm) of precipitation is accumulated.

How many days does it snow in December in Reading?

In December, in Reading, Massachusetts, it is snowing for 5.5 days. Throughout December, 4.33" (110mm) of snow is accumulated.

What is the month with the shortest days in Reading?

December has the shortest days of the year in Reading, with an average of 9h and 6min of daylight.

How many hours of daylight does Reading have in December?

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

When is the sunrise / sunset in December in Reading?

On the first day of December in Reading, sunrise is at 6:55 am and sunset at 4:12 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 4:21 pm EST.

How long on average sun shines in December in Reading?

In Reading, the average sunshine duration in December is 4.8h.

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

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

How high is the UV index in December in Reading?

The average daily maximum UV index in December in Reading, Massachusetts, is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's 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
Reading, MA

Average temperature in December - Reading, MA
  • Average high temperature in December: 38.8°F

The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (33.1°F).

  • Average low temperature in December: 28.9°F

The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).

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Average pressure in December
Reading, MA

Average pressure in December - Reading, MA
  • Average pressure in December: 30.03"Hg

The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in December
Reading, MA

Average wind speed in December - Reading, MA
  • Average wind speed in December: 8.9mph

The windiest month (with the highest average wind speed) is January (9.4mph).
The calmest month (with the lowest average wind speed) is August (5.9mph).

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Average humidity in December
Reading, MA

Average humidity in December - Reading, MA
  • Average humidity in December: 76%

The month with the highest relative humidity is February (78%).
The month with the lowest relative humidity is April (69%).

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Average rainfall in December
Reading, MA

Average rainfall in December - Reading, MA
  • Average rainfall in December: 2.87"

The wettest month (with the highest rainfall) is December (2.87").
The driest month (with the least rainfall) is September (1.22").

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Average rainfall days in December
Reading, MA

Average rainfall days in December - Reading, MA
  • Average rainfall days in December: 9.2 days

The month with the highest number of rainy days is May (15.5 days).
The month with the least rainy days is January (7.4 days).

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Average snowfall in December
Reading, MA

Average snowfall in December - Reading, MA
  • Average snowfall in December: 4.33"

The month with the highest snowfall is February (4.96").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Reading, MA

Average snowfall days in December - Reading, MA
  • Average snowfall days in December: 5.5 days

The month with the highest number of snowfall days is January (7.5 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
Reading, MA

Average daylight in December / Average sunshine in December - Reading, 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: 4h and 5min

The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

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Average sunshine days in December
Reading, MA

Average sunshine days in December - Reading, MA
  • Average sunshine days in December: 17.2 days

The month with the most sunshine days is November (17.8 days).
The month with the least sunshine days is April (13.3 days).

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Average UV index in December
Reading, MA

Average UV index in December - Reading, MA
  • Average UV index in December: 2

The months with the highest UV index are June, July and August (UV index 6).
The 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
Reading, MA

Average cloud cover in December - Reading, MA
  • Average cloud cover in December: 48

The month with the most cloud cover is March (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 32).

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Average visibility in December
Reading, MA

Average visibility in December - Reading, MA
  • Average visibility in December: 6mi

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

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Reading, Massachusetts, USA

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