Climate and monthly weather forecastMattapan, MA
Climate and monthly weather forecast
Weather in January
January, the same as December, is an icy winter month in Mattapan, Massachusetts, with an average temperature fluctuating between 21.9°F (-5.6°C) and 33.6°F (0.9°C). In Mattapan, the lowest average temperatures are observed in January, with a high of 33.6°F (0.9°C) and a low of 21.9°F (-5.6°C). Weather in January »Weather in February
February, the last month of the winter in Mattapan, is also an icy month, with an average temperature varying between 23.2°F (-4.9°C) and 36.5°F (2.5°C). The beginning of February records an average high-temperature of a still wintry 36.5°F (2.5°C), almost echoing the conditions of the previous month. Weather in February »Weather in March
The first month of the spring, March, is a frosty month in Mattapan, Massachusetts, with an average temperature varying between 30.7°F (-0.7°C) and 43.7°F (6.5°C). March brings a slight elevation in the average high-temperature, transitioning from February's icy 36.5°F (2.5°C) to a frosty 43.7°F (6.5°C). Weather in March »Weather in April
April in Mattapan, Massachusetts, is a mild spring month, with an average temperature fluctuating between 40.3°F (4.6°C) and 55.6°F (13.1°C). With the transition into April, Mattapan experiences an increase in average high-temperatures, moving up from a chilly 43.7°F (6.5°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 refreshing month in Mattapan, Massachusetts, with an average temperature fluctuating between 66.6°F (19.2°C) and 50°F (10°C). As April transitions into May, a change in temperatures is observed, with average highs moving from a moderate 55.6°F (13.1°C) to a still refreshing 66.6°F (19.2°C). Weather in May »Weather in June
June, the first month of the summer in Mattapan, is a warm month, with an average temperature fluctuating between 74.1°F (23.4°C) and 57°F (13.9°C). As Mattapan transitions into June, the average high-temperature is observed to slightly rise from a refreshing 66.6°F (19.2°C) in May to a moderately hot 74.1°F (23.4°C). Weather in June »Weather in July
July, like June, in Mattapan, Massachusetts, is a moderately hot summer month, with an average temperature fluctuating between 64.8°F (18.2°C) and 81.3°F (27.4°C). Mattapan notes the warmest temperatures in July, with a high average of 81.3°F (27.4°C) and a low of 64.8°F (18.2°C). July's 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 another warm month in Mattapan, Massachusetts, with an average temperature varying between 63.1°F (17.3°C) and 80.4°F (26.9°C). A minor adjustment in Mattapan's average high-temperature is noted with the start of August, touching a still moderately hot 80.4°F (26.9°C) from July's 81.3°F (27.4°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 fluctuating between 56.5°F (13.6°C) and 72.7°F (22.6°C). September is marked by a subtle drop in average high-temperatures, transitioning from a moderately hot 80.4°F (26.9°C) in August to a pleasant 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). With the onset of October, Mattapan's average high-temperature adjusts, receding from September's pleasant 72.7°F (22.6°C) to a comfortable 61.3°F (16.3°C). Weather in October »Weather in November
The last month of the autumn, November, is also a frosty month in Mattapan, Massachusetts, with temperature in the range of an average low of 36.9°F (2.7°C) and an average high of 49.3°F (9.6°C). November's arrival coincides with a drop in the average high-temperature, decreasing from October's enjoyable 61.3°F (16.3°C) to a chilly 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). The onset of December results in a decrease in the average high-temperature, receding from a chilly 49.3°F (9.6°C) in November to a wintry 39.6°F (4.2°C). Weather in December »Updated: Aug 16, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
In Mattapan, January records the average lowest temperatures, peaking at 33.6°F (0.9°C) and reaching a low of 21.9°F (-5.6°C).
Throughout the year, there are 147.4 rainfall days, and 28.39" (721mm) of precipitation is accumulated.
January through April, October through December are months with snowfall.
In Mattapan, Massachusetts, during the entire year, snow falls for 32.7 days and aggregates up to 22.01" (559mm) of snow.
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
The most humid month is February, with an average relative humidity of 78%.
The month with the least sunshine is February, with an average of 4.7h of sunshine.
March is the month with the most snowfall. Snow falls for 7.3 days and accumulates 5.24" (133mm) of snow.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.
The least humid month is April, with an average relative humidity of 70%.
May through September are months without snowfall.
The month with the longest days is June, with an average of 15h and 12min of daylight.
June through August, with an average maximum UV index of 6, are months with the highest UV index.
In Mattapan, temperatures reach their average annual highs in July, measuring 81.3°F (27.4°C) and a minimum average of 64.8°F (18.2°C).
The month with the most sunshine in Mattapan is August, with an average of 10.5h of sunshine.
September is the month with the least rainfall. Rain falls for 11.8 days and accumulates 1.5" (38mm) of precipitation.
The month with the most rainfall is December, when the rain falls for 10.7 days and typically aggregates up to 2.95" (75mm) of precipitation.
The month with the shortest days is December, with an average of 9h and 12min of daylight.
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).
Average pressure
Mattapan, MA
- Average pressure in January:
30.01"Hg - Average pressure in February:
29.99"Hg - Average pressure in March:
30.03"Hg - Average pressure in April:
29.97"Hg - Average pressure in May:
30.01"Hg - Average pressure in June:
29.93"Hg
- Average pressure in July:
29.95"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.05"Hg - Average pressure in October:
30.01"Hg - Average pressure in November:
30.07"Hg - 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 (29.93"Hg).
Average wind speed
Mattapan, MA
- Average wind speed in January:
9.5mph - Average wind speed in February:
9.3mph - Average wind speed in March:
9.1mph - Average wind speed in April:
8.5mph - Average wind speed in May:
7.3mph - Average wind speed in June:
6.6mph
- Average wind speed in July:
6.2mph - Average wind speed in August:
6mph - Average wind speed in September:
6.5mph - Average wind speed in October:
7.9mph - Average wind speed in November:
8.5mph - Average wind speed in December:
8.9mph
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).
Average humidity
Mattapan, MA
The month with the highest relative humidity is February (78%).
The month with the lowest relative humidity is April (70%).
Average rainfall
Mattapan, MA
- Average rainfall in January:
2.32" - Average rainfall in February:
2.2" - Average rainfall in March:
2.87" - Average rainfall in April:
2.91" - Average rainfall in May:
2.05" - Average rainfall in June:
2.24"
The wettest month (with the highest rainfall) is December (2.95").
The driest month (with the least rainfall) is September (1.5").
Average rainfall days
Mattapan, MA
- Average rainfall days in January:
7.8 days - Average rainfall days in February:
7.8 days - Average rainfall days in March:
11.5 days - Average rainfall days in April:
14.7 days - Average rainfall days in May:
15.1 days - Average rainfall days in June:
15.1 days
- Average rainfall days in July:
15.8 days - Average rainfall days in August:
13.6 days - Average rainfall days in September:
11.8 days - Average rainfall days in October:
13.7 days - Average rainfall days in November:
9.8 days - Average rainfall days in December:
10.7 days
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).
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").
Average snowfall days
Mattapan, MA
- Average snowfall days in January:
7.9 days - Average snowfall days in February:
8.2 days - Average snowfall days in March:
7.3 days - Average snowfall days in April:
1.3 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0.2 days - Average snowfall days in November:
2 days - Average snowfall days in December:
5.8 days
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).
Average daylight / Average sunshine
Mattapan, MA
- Average daylight in January:
9h and 30min - Average daylight in February:
10h and 36min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 24min - Average daylight in May:
14h and 36min - Average daylight in June:
15h and 12min
- Average daylight in July:
14h and 54min - Average daylight in August:
13h and 48min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 6min - Average daylight in November:
9h and 48min - Average daylight in December:
9h and 12min
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 12min).
- Average sunshine in January:
5h and 6min - Average sunshine in February:
4h and 42min - Average sunshine in March:
5h and 42min - Average sunshine in April:
8h and 6min - Average sunshine in May:
8h and 24min - Average sunshine in June:
9h and 12min
- Average sunshine in July:
10h and 12min - Average sunshine in August:
10h and 30min - Average sunshine in September:
8h and 24min - Average sunshine in October:
6h and 6min - Average sunshine in November:
5h and 24min - Average sunshine in December:
4h and 54min
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
Mattapan, MA
- Average sunshine days in January:
17.3 days - Average sunshine days in February:
14.1 days - Average sunshine days in March:
14.5 days - Average sunshine days in April:
13.2 days - Average sunshine days in May:
14 days - Average sunshine days in June:
13.6 days
- Average sunshine days in July:
13.7 days - Average sunshine days in August:
15.5 days - Average sunshine days in September:
15.8 days - Average sunshine days in October:
15.5 days - Average sunshine days in November:
18 days - Average sunshine days in December:
16.5 days
The month with the most sunshine days is November (18 days).
The month with the least sunshine days is April (13.2 days).
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).
Average cloud cover
Mattapan, MA
The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 33).
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).
