January weather forecast
Somerville, MA

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Weather in January

January brings to Somerville Massachusetts the feel of a true winter atmosphere. Freezing cold temperatures are the norm, with an average low temperature touching 22.5°F (-5.3°C) and high peaking at 33.8°F (1°C). This period can be particularly challenging for outdoor activities with the peak winters and icy winds. Relatively high levels of cloud cover contribute to lower sunshine duration in the month, culminating in a wintry ambiance. Be prepared for the brisk winds, commonly clocking in at 9.6mph (15.4km/h), adding an extra chilliness to the season.

Temperature

January brings the lowest temperatures in Somerville, with an average high of 33.8°F (1°C) and an average low of 22.5°F (-5.3°C).

Humidity

The average relative humidity in January is 77%.

Rainfall

In Somerville, in January, it is raining for 2.9 days, with typically 0.35" (9mm) of accumulated precipitation. Throughout the year, there are 47.8 rainfall days, and 4.13" (105mm) of precipitation is accumulated.

Snowfall

January through May, November and December are months with snowfall. In Somerville, in January, during 3.4 snowfall days, 0.2" (5mm) of snow is typically accumulated. In Somerville, Massachusetts, during the entire year, snow falls for 13.2 days and aggregates up to 2.17" (55mm) of snow.

Daylight

In Somerville, the average length of the day in January is 9h and 30min.
On the first day of the month, sunrise is at 7:13 am and sunset at 4:22 pm. On the last day of January, sunrise is at 6:59 am and sunset at 4:56 pm EST.

Sunshine

In Somerville, Massachusetts, the average sunshine in January is 5.2h.

UV index

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Somerville. 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: An average UV index of 2 in January transforms into this advice:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
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Frequently asked questions

What is the coldest time of year in Somerville?

In Somerville, January records the average lowest temperatures, peaking at 33.8°F (1°C) and reaching a low of 22.5°F (-5.3°C).

How cold is it in Somerville in January?

January temperatures in Somerville vary between a high-temperature of 33.8°F (1°C) and a low-temperature of 22.5°F (-5.3°C).

What is the average humidity in January in Somerville?

In January, the average relative humidity is 77%.

How many days does it rain in January in Somerville?

In Somerville, Massachusetts, during January, the rain falls for 2.9 days and regularly aggregates up to 0.35" (9mm) of precipitation.

How many days does it snow in January in Somerville?

In January, in Somerville, it is snowing for 3.4 days. Throughout January, 0.2" (5mm) of snow is accumulated.

What is the average length of the day in January in Somerville?

In January, the average day length in Somerville, Massachusetts, is 9h and 30min.

When is the sunrise / sunset in January in Somerville?

In January, on the first day of the month, sunrise is at 7:13 am and sunset at 4:22 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 4:56 pm EST.

How many hours of sunshine does Somerville have in January?

In Somerville, Massachusetts, the average sunshine duration in January is 5.2h.

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

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

What is the UV index intensity in January in Somerville?

In Somerville, Massachusetts, the average daily maximum UV index in January is 2. A UV Index of 2, and less, symbolizes a minimal hazard to health 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 January
Somerville, MA

Average temperature in January - Somerville, MA
  • Average high temperature in January: 33.8°F

The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (33.8°F).

  • Average low temperature in January: 22.5°F

The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).

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Average pressure in January
Somerville, MA

Average pressure in January - Somerville, MA
  • Average pressure in January: 30.01"Hg

The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in January
Somerville, MA

Average wind speed in January - Somerville, MA
  • Average wind speed in January: 9.6mph

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).

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Average humidity in January
Somerville, MA

Average humidity in January - Somerville, MA
  • Average humidity in January: 77%

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 January
Somerville, MA

Average rainfall in January - Somerville, MA
  • Average rainfall in January: 0.35"

The wettest month (with the highest rainfall) is November (0.55").
The driest month (with the least rainfall) is September (0.12").

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Average rainfall days in January
Somerville, MA

Average rainfall days in January - Somerville, MA
  • Average rainfall days in January: 2.9 days

The month with the highest number of rainy days is April (5.9 days).
The months with the least rainy days are January and September (2.9 days).

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Average snowfall in January
Somerville, MA

Average snowfall in January - Somerville, MA
  • Average snowfall in January: 0.2"

The month with the highest snowfall is December (0.71").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in January
Somerville, MA

Average snowfall days in January - Somerville, MA
  • Average snowfall days in January: 3.4 days

The month with the highest number of snowfall days is January (3.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in January /
Average sunshine in January
Somerville, MA

Average daylight in January / Average sunshine in January - Somerville, MA
  • Average daylight in January: 9h and 3min

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 January: 5h and 1min

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 January
Somerville, MA

Average sunshine days in January - Somerville, MA
  • Average sunshine days in January: 25 days

The month with the most sunshine days is December (25.5 days).
The month with the least sunshine days is July (22.8 days).

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Average UV index in January
Somerville, MA

Average UV index in January - Somerville, MA
  • Average UV index in January: 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 January
Somerville, MA

Average cloud cover in January - Somerville, MA
  • Average cloud cover in January: 45

The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 32).

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Average visibility in January
Somerville, MA

Average visibility in January - Somerville, MA
  • Average visibility in January: 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).

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Somerville, Massachusetts, USA

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