Climate and monthly weather forecast
Mattapan, MA

Weather in January

January, the same as December, is a wintry winter month in Mattapan, Massachusetts, with an average temperature ranging between min 21.9°F (-5.6°C) and max 33.6°F (0.9°C). The coldest month is January, with an average high-temperature of 33.6°F (0.9°C) and an average low-temperature of 21.9°F (-5.6°C). Weather in January »

Weather in February

February, the last month of the winter in Mattapan, is also a wintry month, with an average temperature varying between 23.2°F (-4.9°C) and 36.5°F (2.5°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 chilly month in Mattapan, Massachusetts, with temperature in the range of an average high of 43.7°F (6.5°C) and an average low of 30.7°F (-0.7°C). In Mattapan, the average high-temperature in March slightly increases from a wintry 36.5°F (2.5°C) in February to a frosty 43.7°F (6.5°C). Weather in March »

Weather in April

April in Mattapan, Massachusetts, is a moderate spring month, with an average temperature varying between 40.3°F (4.6°C) and 55.6°F (13.1°C). In April, the average high-temperature increases from a frosty 43.7°F (6.5°C) in March to a mild 55.6°F (13.1°C). Weather in April »

Weather in May

May, the last month of the spring in Mattapan, is an enjoyable month, with an average temperature fluctuating between 66.6°F (19.2°C) and 50°F (10°C). In Mattapan, Massachusetts, the average high-temperature in May rises from a moderate 55.6°F (13.1°C) in April to an enjoyable 66.6°F (19.2°C). Weather in May »

Weather in June

The first month of the summer, June, is a moderately hot month in Mattapan, Massachusetts, with temperature in the range of an average high of 74.1°F (23.4°C) and an average low of 57°F (13.9°C). In June, the average high-temperature slightly increases from an enjoyable 66.6°F (19.2°C) in May to a warm 74.1°F (23.4°C). Weather in June »

Weather in July

July, the same as June, is another warm summer month in Mattapan, Massachusetts, with an average temperature varying between 64.8°F (18.2°C) and 81.3°F (27.4°C). With an average high-temperature of 81.3°F (27.4°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 hot 86°F (30°C). Weather in July »

Weather in August

The last month of the summer, August, is another warm month in Mattapan, Massachusetts, with an average temperature ranging between min 63.1°F (17.3°C) and max 80.4°F (26.9°C). In August, the average high-temperature is essentially the same as in July - a still warm 80.4°F (26.9°C). Weather in August »

Weather in September

The first month of the autumn, September, is also an agreeable month in Mattapan, Massachusetts, with an average temperature varying between 56.5°F (13.6°C) and 72.7°F (22.6°C). In Mattapan, the average high-temperature in September slightly decreases from a warm 80.4°F (26.9°C) in August to an agreeable 72.7°F (22.6°C). Weather in September »

Weather in October

October, the same as September, is another enjoyable autumn month in Mattapan, Massachusetts, with an average temperature fluctuating between 61.3°F (16.3°C) and 47.3°F (8.5°C). In Mattapan, the average high-temperature in October decreases from a pleasant 72.7°F (22.6°C) in September to an enjoyable 61.3°F (16.3°C). Weather in October »

Weather in November

The last month of the autumn, November, is another chilly month in Mattapan, Massachusetts, with an average temperature fluctuating between 49.3°F (9.6°C) and 36.9°F (2.7°C). In November, the average high-temperature decreases from an enjoyable 61.3°F (16.3°C) in October to a frosty 49.3°F (9.6°C). Weather in November »

Weather in December

The first month of the winter, December, is also a wintry month in Mattapan, Massachusetts, with an average temperature fluctuating between 39.6°F (4.2°C) and 29.1°F (-1.6°C). In December, the average high-temperature decreases from a chilly 49.3°F (9.6°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 Mattapan?

With an average high-temperature of 33.6°F (0.9°C) and an average low-temperature of 21.9°F (-5.6°C), January is the coldest month in Mattapan, Massachusetts.

How many days does it rain in Mattapan?

In Mattapan, during the entire year, the rain falls for 147.4 days and collects up to 28.39" (721mm) of precipitation.

When does it snow in Mattapan?

Months with snowfall in Mattapan, Massachusetts, are January through April, October through December.

How much does it snow in Mattapan?

Throughout the year, there are 32.7 snowfall days, and 22.01" (559mm) of snow is accumulated.

When is the lowest UV index in Mattapan?

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

What is the most humid month in Mattapan?

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

What is the month with the least sunshine in Mattapan?

The month with the least sunshine in Mattapan is February, with an average of 4.7h of sunshine.

What is the snowiest month in Mattapan?

The month with the most snowfall is March, when snow falls for 7.3 days and typically aggregates up to 5.24" (133mm) of snow.

When is Daylight Saving Time (DST) in Mattapan?

On Sunday, March 12. 2023, at 2:00 am, Daylight Saving Time starts in Mattapan, Massachusetts, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 5. 2023, at 2:00 am, and the time zone reverts from EDT to EST.

What is the least humid month in Mattapan?

April is the least humid month, with an average relative humidity of 70%.

When it does not snow in Mattapan?

In Mattapan, Massachusetts, snow does not fall in May through September.

When are the longest days in Mattapan?

With an average of 15h and 13min of daylight, June has the longest days of the year in Mattapan.

What is the month with the highest UV index in Mattapan?

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

What is the warmest month in Mattapan?

July is the warmest month in Mattapan, Massachusetts, with an average high-temperature of 81.3°F (27.4°C) and an average low-temperature of 64.8°F (18.2°C).

What month has the most sunshine in Mattapan?

August has the most sunshine of the year in Mattapan, Massachusetts, with an average of 10.5h of sunshine.

What is the driest month in Mattapan?

September is the month with the least rainfall. Rain falls for 11.8 days and accumulates 1.5" (38mm) of precipitation.

What is the rainiest month in Mattapan?

December is the month with the most rainfall. Rain falls for 10.7 days and accumulates 2.95" (75mm) of precipitation.

What is the month with the shortest days in Mattapan?

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

Average temperature
Mattapan, MA

Average temperature - Mattapan, MA

The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (33.6°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 (21.9°F).

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Average pressure
Mattapan, MA

Average pressure - Mattapan, MA

The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed
Mattapan, MA

Average wind speed - Mattapan, MA

The windiest month (with the highest average wind speed) is January (9.5mph).
The calmest month (with the lowest average wind speed) is August (6mph).

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Average rainfall
Mattapan, MA

Average rainfall - Mattapan, MA

The wettest month (with the highest rainfall) is December (2.95").
The driest month (with the least rainfall) is September (1.5").

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Average rainfall days
Mattapan, MA

Average rainfall days - Mattapan, MA

The month with the highest number of rainy days is July (15.8 days).
The months with the least rainy days are January and February (7.8 days).

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Average snowfall
Mattapan, MA

Average snowfall - Mattapan, MA

The month with the highest snowfall is March (5.24").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days
Mattapan, MA

Average snowfall days - Mattapan, MA

The month with the highest number of snowfall days is February (8.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight / Average sunshine
Mattapan, MA

Average daylight / Average sunshine - Mattapan, MA

The month with the longest days is June (Average daylight: 15h and 13min).
The month with the shortest days is December (Average daylight: 9h and 9min).

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).

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Average sunshine days
Mattapan, MA

Average sunshine days - Mattapan, MA

The month with the most sunshine days is November (18 days).
The month with the least sunshine days is April (13.2 days).

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Average UV index
Mattapan, MA

Average UV index - Mattapan, 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
Mattapan, MA

Average visibility - Mattapan, 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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