Climate and monthly weather forecast
Somerville, MA

Weather in January

January, like December, in Somerville, Massachusetts, is a wintry winter month, with an average temperature ranging between max 33.8°F (1°C) and min 22.5°F (-5.3°C). January is the coldest month, with an average high-temperature of 33.8°F (1°C) and an average low-temperature of 22.5°F (-5.3°C). Weather in January »

Weather in February

February, the last month of the winter in Somerville, is also a wintry month, with an average temperature fluctuating between 36.5°F (2.5°C) and 23.4°F (-4.8°C). In February, the average high-temperature is almost the same as in January - a still cold 36.5°F (2.5°C). Weather in February »

Weather in March

The first month of the spring, March, is a frosty month in Somerville, Massachusetts, with an average temperature varying between 43.3°F (6.3°C) and 30.6°F (-0.8°C). In Somerville, the average high-temperature in March slightly increases from a wintry 36.5°F (2.5°C) in February to a frosty 43.3°F (6.3°C). Weather in March »

Weather in April

April in Somerville, Massachusetts, is a mild spring month, with an average temperature fluctuating between 40.1°F (4.5°C) and 55.6°F (13.1°C). In Somerville, the average high-temperature in April increases from a chilly 43.3°F (6.3°C) in March to a mild 55.6°F (13.1°C). Weather in April »

Weather in May

The last month of the spring, May, is a comfortable month in Somerville, Massachusetts, with an average temperature fluctuating between 49.8°F (9.9°C) and 66.7°F (19.3°C). In Somerville, the average high-temperature in May increases from a mild 55.6°F (13.1°C) in April to a comfortable 66.7°F (19.3°C). Weather in May »

Weather in June

June, the first month of the summer in Somerville, is a moderately hot month, with an average temperature varying between 74.5°F (23.6°C) and 57.4°F (14.1°C). In June, the average high-temperature slightly increases from a comfortable 66.7°F (19.3°C) in May to a warm 74.5°F (23.6°C). Weather in June »

Weather in July

July, the same as June, is another warm summer month in Somerville, Massachusetts, with an average temperature varying between 64.8°F (18.2°C) and 81.9°F (27.7°C). With an average high-temperature of 81.9°F (27.7°C) and an average low-temperature of 64.8°F (18.2°C), July is the warmest month. In July, the average heat index is evaluated at a tropical 86°F (30°C). Weather in July »

Weather in August

The last month of the summer, August, is also a moderately hot month in Somerville, Massachusetts, with an average temperature fluctuating between 63.5°F (17.5°C) and 80.4°F (26.9°C). In Somerville, the average high-temperature in August is practically the same as in July - a still moderately hot 80.4°F (26.9°C). Weather in August »

Weather in September

September, the first month of the autumn in Somerville, is also an agreeable month, with an average temperature varying between 56.8°F (13.8°C) and 72.9°F (22.7°C). In September, the average high-temperature slightly decreases from a moderately hot 80.4°F (26.9°C) in August to an agreeable 72.9°F (22.7°C). Weather in September »

Weather in October

October, the same as September, is another comfortable autumn month in Somerville, Massachusetts, with an average temperature fluctuating between 47.7°F (8.7°C) and 61.2°F (16.2°C). In October, the average high-temperature drops from a pleasant 72.9°F (22.7°C) in September to an enjoyable 61.2°F (16.2°C). Weather in October »

Weather in November

The last month of the autumn, November, is another chilly month in Somerville, Massachusetts, with temperature in the range of an average low of 37.4°F (3°C) and an average high of 49.5°F (9.7°C). In Somerville, the average high-temperature in November decreases from a comfortable 61.2°F (16.2°C) in October to a frosty 49.5°F (9.7°C). Weather in November »

Weather in December

December, the first month of the winter in Somerville, is still a cold month, with an average temperature ranging between min 29.3°F (-1.5°C) and max 39.6°F (4.2°C). In December, the average high-temperature drops from a frosty 49.5°F (9.7°C) in November to a wintry 39.6°F (4.2°C). Weather in December »
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FAQ

What is the coldest month in Somerville?

With an average high-temperature of 33.8°F (1°C) and an average low-temperature of 22.5°F (-5.3°C), January is the coldest month in Somerville.

How much does it rain in Somerville?

In Somerville, Massachusetts, during the entire year, the rain falls for 47.8 days and collects up to 4.13" (105mm) of precipitation.

When does it snow in Somerville?

January through May, November and December are months with snowfall.

How much does it snow in Somerville?

In Somerville, during the entire year, snow falls for 13.2 days and aggregates up to 2.17" (55mm) of snow.

When is 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 in Somerville.

What is the most humid month in Somerville?

The most humid month is February, with an average relative humidity of 78%.

What is the month with the least sunshine in Somerville?

February has the least sunshine of the year in Somerville, with an average of 4.6h of sunshine.

When is Daylight Saving Time (DST) in Somerville?

On Sunday, March 13. 2022, at 2:00 am, Daylight Saving Time starts in Somerville, Massachusetts, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 6. 2022, at 2:00 am, and the time zone reverts from EDT to EST.

What is the least humid month in Somerville?

With an average relative humidity of 69%, April is the least humid month in Somerville.

When it does not snow in Somerville?

In Somerville, Massachusetts, snow does not fall in June through October.

When are the longest days in Somerville?

June has the longest days of the year in Somerville, Massachusetts, with an average of 15h and 14min of daylight.

When is the highest UV index in Somerville?

The months with the highest UV index in Somerville are June through August, with an average maximum UV index of 6.

What is the warmest month in Somerville?

The warmest month in Somerville is July, with an average high-temperature of 81.9°F (27.7°C) and an average low-temperature of 64.8°F (18.2°C).

What month has the most sunshine in Somerville?

The month with the most sunshine is August, with an average of 10.5h of sunshine.

What is the driest month in Somerville?

September is the month with the least rainfall. Rain falls for 2.9 days and accumulates 0.12" (3mm) of precipitation.

What is the wettest month in Somerville?

The month with the most rainfall in Somerville, Massachusetts, is November, when the rain falls for 3.3 days and typically aggregates up to 0.55" (14mm) of precipitation.

What is the snowiest month in Somerville?

December is the month with the most snowfall in Somerville, Massachusetts. Snow falls for 2.4 days and accumulates 0.71" (18mm) of snow.

What is the month with the shortest days in Somerville?

With an average of 9h and 8min of daylight, December has the shortest days of the year.

Average temperature
Somerville, MA

Average temperature - Somerville, MA

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).

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
Somerville, MA

Average pressure - Somerville, MA

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
Somerville, MA

Average wind speed - Somerville, MA

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 rainfall
Somerville, MA

Average rainfall - Somerville, MA

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
Somerville, MA

Average rainfall days - Somerville, MA

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
Somerville, MA

Average snowfall - Somerville, MA

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
Somerville, MA

Average snowfall days - Somerville, MA

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 / Average sunshine
Somerville, MA

Average daylight / Average sunshine - Somerville, MA

The month with the longest days is June (Average daylight: 15h and 14min).
The month with the shortest days is December (Average daylight: 9h and 8min).

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
Somerville, MA

Average sunshine days - Somerville, MA

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
Somerville, MA

Average UV index - Somerville, MA

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 visibility
Somerville, MA

Average visibility - Somerville, MA

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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