December weather forecast
Medford, MA

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Weather in December

December, in Medford, Massachusetts, announces the arrival of winter in full force. This is apparent with temperatures plunging compared to November, averaging a high of 39.4°F (4.1°C) and a low of 29.3°F (-1.5°C). Along with the dropping temperatures, the prevalence of snowfall becomes a common occurrence in the weather forecast. As the year concludes, the profoundly cold and snowy conditions set the tone for the forthcoming January, restarting the annual weather cycle.

Temperature

The shift to December brings a decrease in the average high-temperature, falling from a chilly 49.3°F (9.6°C) in November to a cold 39.4°F (4.1°C). In the month of December, Medford's average low-temperature falls to a subzero cold 29.3°F (-1.5°C).

Humidity

The average relative humidity in December is 76%.

Rainfall

In Medford, in December, it is raining for 2.9 days, with typically 0.43" (11mm) of accumulated precipitation. Throughout the year, there are 45.2 rainfall days, and 3.98" (101mm) of precipitation is accumulated.

Snowfall

January through March, May, November and December are months with snowfall. The month with the most snowfall is December, when snow falls for 2.4 days and typically aggregates up to 0.55" (14mm) 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 the month, sunrise is at 6:54 am and sunset at 4:12 pm. On the last day of December, sunrise is at 7:13 am and sunset at 4:21 pm EST.

Sunshine

The average sunshine in December is 4.8h.

UV index

The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for the average person.
Note: In December, the average maximum UV index of 2 translates into the following recommendations:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.

Frequently asked questions

How cold does it get in December?

During December, Medford experiences an average high-temperature of 39.4°F (4.1°C) and a low-temperature of 29.3°F (-1.5°C). In August, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, is calculated to be 84.2°F (29°C).

What is the average humidity in December?

The average relative humidity in December is 76%.

How much does it rain in December?

In Medford, in December, it is raining for 2.9 days, with typically 0.43" (11mm) of accumulated precipitation.

What is the snowiest month?

The month with the most snowfall is December, when snow falls for 2.4 days and typically aggregates up to 0.55" (14mm) of snow.

How much does it snow in December?

In Medford, Massachusetts, during December, snow falls for 2.4 days and regularly aggregates up to 0.55" (14mm) of snow.

What is the month with the shortest days in Medford?

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

How many hours of daylight does Medford have in December?

The average day length in December is 9h and 8min.

What time are sunrise and sunset in December in Medford?

In December, on the first day of the month, sunrise is at 6:54 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 Medford?

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

What are the months with the lowest UV index?

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

How high is the UV index in December?

The average daily maximum UV index in December in Medford is 2. A UV Index reading of 2, and below, represents a low health threat 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
Medford, MA

Average temperature in December - Medford, MA
  • Average high temperature in December: 39.4°F

The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (33.6°F).

  • Average low temperature in December: 29.3°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 (22.5°F).

Average pressure in December
Medford, MA

Average pressure in December - Medford, 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).

Average wind speed in December
Medford, MA

Average wind speed in December - Medford, MA
  • Average wind speed in December: 9.1mph

The windiest month (with the highest average wind speed) is January (9.6mph).
The calmest month (with the lowest average wind speed) is August (6mph).

Average humidity in December
Medford, MA

Average humidity in December - Medford, 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%).

Average rainfall in December
Medford, MA

Average rainfall in December - Medford, MA
  • Average rainfall in December: 0.43"

The wettest month (with the highest rainfall) is November (0.55").
The driest month (with the least rainfall) is September (0.08").

Average rainfall days in December
Medford, MA

Average rainfall days in December - Medford, MA
  • Average rainfall days in December: 2.9 days

The month with the highest number of rainy days is April (5.3 days).
The month with the least rainy days is January (2.2 days).

Average snowfall in December
Medford, MA

Average snowfall in December - Medford, MA
  • Average snowfall in December: 0.55"

The month with the highest snowfall is December (0.55").
The months with the least snowfall are April, June, July, August, September and October (0").

Average snowfall days in December
Medford, MA

Average snowfall days in December - Medford, MA
  • Average snowfall days in December: 2.4 days

The month with the highest number of snowfall days is February (2.8 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

Average daylight in December /
Average sunshine in December
Medford, MA

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

The month with the longest days is June (Average daylight: 15h and 12min).
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 42min).

Average sunshine days in December
Medford, MA

Average sunshine days in December - Medford, MA
  • Average sunshine days in December: 26.5 days

The month with the most sunshine days is January (27.2 days).
The months with the least sunshine days are June and August (22.9 days).

Average UV index in December
Medford, MA

Average UV index in December - Medford, 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).

Average cloud cover in December
Medford, MA

Average cloud cover in December - Medford, 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).

Average visibility in December
Medford, MA

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

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

Medford, Massachusetts, USA

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