Climate and monthly weather forecastMarlborough, MA
Climate and monthly weather forecast
Weather in January
January, like December, in Marlborough, Massachusetts, is an icy winter month, with an average temperature fluctuating between 32.5°F (0.3°C) and 19.8°F (-6.8°C). January, with its average high-temperature of 32.5°F (0.3°C) and an average low-temperature of 19.8°F (-6.8°C), holds the record as the coldest month. Weather in January »Weather in February
The last month of the winter, February, is another cold month in Marlborough, Massachusetts, with an average temperature ranging between min 20.7°F (-6.3°C) and max 35.2°F (1.8°C). Marlborough marks the onset of February with an average high-temperature of a still wintry 35.2°F (1.8°C), subtly divergent from January's 32.5°F (0.3°C). Weather in February »Weather in March
March, the first month of the spring in Marlborough, is a chilly month, with temperature in the range of an average high of 43°F (6.1°C) and an average low of 28.8°F (-1.8°C). With the beginning of March, Marlborough's average high-temperature sees a minor increase, transitioning from an icy 35.2°F (1.8°C) in February to a frosty 43°F (6.1°C). Weather in March »Weather in April
April in Marlborough, Massachusetts, is a mild spring month, with temperature in the range of an average low of 39°F (3.9°C) and an average high of 55.9°F (13.3°C). The transition from March to April brings a temperature rise, with average high-temperatures increasing from a frosty 43°F (6.1°C) to a mild 55.9°F (13.3°C). Weather in April »Weather in May
The last month of the spring, May, is a refreshing month in Marlborough, Massachusetts, with an average temperature fluctuating between 48.7°F (9.3°C) and 67.5°F (19.7°C). The arrival of May signals an increase in the average high-temperature, moving from a mild 55.9°F (13.3°C) in April to an enjoyable 67.5°F (19.7°C). Weather in May »Weather in June
June, the first month of the summer in Marlborough, is a moderately hot month, with an average temperature varying between 55.9°F (13.3°C) and 75.2°F (24°C). June's arrival coincides with a marginal rise in the average high-temperature, moving from May's comfortable 67.5°F (19.7°C) to a moderately hot 75.2°F (24°C). Weather in June »Weather in July
July, the same as June, is a moderately hot summer month in Marlborough, Massachusetts, with an average temperature fluctuating between 63°F (17.2°C) and 82°F (27.8°C). Marlborough's July weather reaches an average high of 82°F (27.8°C) and an average low of 63°F (17.2°C), making it the warmest month. The heat index for July is appraised at a tropical 87.8°F (31°C). Weather in July »Weather in August
The last month of the summer, August, is also a moderately hot month in Marlborough, Massachusetts, with an average temperature varying between 61.7°F (16.5°C) and 80.4°F (26.9°C). The onset of August marks an average high-temperature of a still warm 80.4°F (26.9°C), hardly differing from July's 82°F (27.8°C). Weather in August »Weather in September
The first month of the autumn, September, is also an agreeable month in Marlborough, Massachusetts, with an average temperature varying between 54.7°F (12.6°C) and 72.9°F (22.7°C). A subtle change in temperatures is noted as August gives way to September, with average highs reducing from a moderately hot 80.4°F (26.9°C) to an agreeable 72.9°F (22.7°C). Weather in September »Weather in October
October, like September, is another mild autumn month in Marlborough, Massachusetts, with an average temperature varying between 59.7°F (15.4°C) and 45.5°F (7.5°C). The move into October indicates a reduction in the average high-temperature, down from September's agreeable 72.9°F (22.7°C) to a mild 59.7°F (15.4°C). Weather in October »Weather in November
The last month of the autumn, November, is another chilly month in Marlborough, Massachusetts, with temperature in the range of an average high of 48.6°F (9.2°C) and an average low of 34.7°F (1.5°C). With November's onset, the average high-temperature recedes from October's refreshing 59.7°F (15.4°C) to a frosty 48.6°F (9.2°C). Weather in November »Weather in December
December, the first month of the winter in Marlborough, is still a cold month, with an average temperature fluctuating between 27°F (-2.8°C) and 38.3°F (3.5°C). In December, the average high-temperature decreases from a chilly 48.6°F (9.2°C) in November to a cold 38.3°F (3.5°C). Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Marlborough, MA
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (32.5°F).
The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure
Marlborough, 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:
29.92"Hg
- Average pressure in July:
29.94"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:
30.04"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
Marlborough, MA
- Average wind speed in January:
8.6mph - Average wind speed in February:
8.5mph - Average wind speed in March:
8.5mph - Average wind speed in April:
8mph - Average wind speed in May:
6.8mph - Average wind speed in June:
6.2mph
- Average wind speed in July:
5.7mph - Average wind speed in August:
5.5mph - Average wind speed in September:
6mph - Average wind speed in October:
7.1mph - Average wind speed in November:
7.6mph - Average wind speed in December:
8.1mph
The windiest month (with the highest average wind speed) is January (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity
Marlborough, MA
The month with the highest relative humidity is February (80%).
The month with the lowest relative humidity is April (71%).
Average rainfall
Marlborough, MA
- Average rainfall in January:
2.01" - Average rainfall in February:
1.93" - Average rainfall in March:
2.56" - Average rainfall in April:
2.52" - Average rainfall in May:
2.01" - Average rainfall in June:
2.24"
- Average rainfall in July:
2.05" - Average rainfall in August:
2.13" - Average rainfall in September:
1.34" - Average rainfall in October:
2.44" - Average rainfall in November:
2.56" - Average rainfall in December:
2.56"
The wettest months (with the highest rainfall) are March, November and December (2.56").
The driest month (with the least rainfall) is September (1.34").
Average rainfall days
Marlborough, MA
- Average rainfall days in January:
6.8 days - Average rainfall days in February:
7.3 days - Average rainfall days in March:
10.5 days - Average rainfall days in April:
13.5 days - Average rainfall days in May:
15.6 days - Average rainfall days in June:
14.8 days
- Average rainfall days in July:
14.7 days - Average rainfall days in August:
13.7 days - Average rainfall days in September:
11.5 days - Average rainfall days in October:
13.3 days - Average rainfall days in November:
9.6 days - Average rainfall days in December:
9.5 days
The month with the highest number of rainy days is May (15.6 days).
The month with the least rainy days is January (6.8 days).
Average snowfall
Marlborough, MA
- Average snowfall in January:
3.35" - Average snowfall in February:
5.24" - Average snowfall in March:
5.2" - Average snowfall in April:
1.69" - Average snowfall in May:
0.16" - Average snowfall in June:
0"
The month with the highest snowfall is February (5.24").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Marlborough, MA
- Average snowfall days in January:
7.6 days - Average snowfall days in February:
7.8 days - Average snowfall days in March:
7.4 days - Average snowfall days in April:
1.5 days - Average snowfall days in May:
0.1 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:
0.5 days - Average snowfall days in November:
2 days - Average snowfall days in December:
5.5 days
The month with the highest number of snowfall days is February (7.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Marlborough, 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 0min - Average daylight in November:
9h and 48min - Average daylight in December:
9h and 6min
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 6min - Average sunshine in February:
4h and 48min - Average sunshine in March:
5h and 48min - Average sunshine in April:
8h and 6min - Average sunshine in May:
8h and 24min - Average sunshine in June:
9h and 6min
- Average sunshine in July:
10h and 6min - Average sunshine in August:
10h and 18min - Average sunshine in September:
8h and 24min - Average sunshine in October:
5h and 54min - Average sunshine in November:
5h and 30min - Average sunshine in December:
4h and 54min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days
Marlborough, MA
- Average sunshine days in January:
17.8 days - Average sunshine days in February:
15.5 days - Average sunshine days in March:
15.1 days - Average sunshine days in April:
13.4 days - Average sunshine days in May:
13.7 days - Average sunshine days in June:
13.8 days
- Average sunshine days in July:
14.1 days - Average sunshine days in August:
15.6 days - Average sunshine days in September:
16 days - Average sunshine days in October:
15.7 days - Average sunshine days in November:
18.4 days - Average sunshine days in December:
17.6 days
The month with the most sunshine days is November (18.4 days).
The month with the least sunshine days is April (13.4 days).
Average UV index
Marlborough, 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
Marlborough, MA
The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility
Marlborough, MA
The months with the highest visibility are January, March, April, May, October, November and December (6mi).
The months with the lowest visibility are February, June, July, August and September (5mi).





