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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January, like December, in Marlborough, Connecticut, is a wintry winter month, with an average temperature fluctuating between 34.3°F (1.3°C) and 22.8°F (-5.1°C). January stands out as Marlborough's coldest month, with an average high-temperature of 34.3°F (1.3°C) and a low-temperature of 22.8°F (-5.1°C). Weather in January »
Weather in February
The last month of the winter, February, is also an icy month in Marlborough, Connecticut, with an average temperature fluctuating between 37°F (2.8°C) and 23.4°F (-4.8°C). With the onset of February, the average high-temperature stands at a still icy 37°F (2.8°C), closely aligned with January's 34.3°F (1.3°C). Weather in February »
Weather in March
The first month of the spring, March, is a frosty month in Marlborough, Connecticut, with an average temperature fluctuating between 44.4°F (6.9°C) and 30.4°F (-0.9°C). In Marlborough, the onset of March comes with a modest high-temperature shift, transitioning from February's wintry 37°F (2.8°C) to a chilly 44.4°F (6.9°C). Weather in March »
Weather in April
April is a mild spring month in Marlborough, Connecticut, with an average temperature ranging between max 56.5°F (13.6°C) and min 40.3°F (4.6°C). April's arrival signals a temperature shift, moving from a chilly 44.4°F (6.9°C) in March to a refreshing 56.5°F (13.6°C). Weather in April »
Weather in May
May, the last month of the spring in Marlborough, is a refreshing month, with temperature in the range of an average low of 49.6°F (9.8°C) and an average high of 67.6°F (19.8°C). May's arrival signals a temperature shift, moving from a moderate 56.5°F (13.6°C) in April to a still refreshing 67.6°F (19.8°C). Weather in May »
Weather in June
The first month of the summer, June, is a moderately hot month in Marlborough, Connecticut, with temperature in the range of an average low of 57.4°F (14.1°C) and an average high of 75.7°F (24.3°C). The shift into June brings a slight increase in the average high-temperature, moving from an enjoyable 67.6°F (19.8°C) in May to a warm 75.7°F (24.3°C). Weather in June »
Weather in July
July, the same as June, is another warm summer month in Marlborough, Connecticut, with an average temperature varying between 82.2°F (27.9°C) and 64°F (17.8°C). July is Marlborough's warmest month, registering average high temperatures of 82.2°F (27.9°C) and lows of 64°F (17.8°C). In July, the heat index is evaluated 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, Connecticut, with an average temperature varying between 80.2°F (26.8°C) and 63°F (17.2°C). In August, the average high-temperature registers at a still moderately hot 80.2°F (26.8°C), nearly identical to July's 82.2°F (27.9°C). Weather in August »
Weather in September
September, the first month of the autumn in Marlborough, is also a moderately hot month, with temperature in the range of an average high of 73.4°F (23°C) and an average low of 56.7°F (13.7°C). The shift from August to September includes a minor decrease in the average high-temperature, lightly dropping from 80.2°F (26.8°C) to a still moderately hot 73.4°F (23°C). Weather in September »
Weather in October
October, the same as September, is another comfortable autumn month in Marlborough, Connecticut, with an average temperature varying between 61.5°F (16.4°C) and 47.7°F (8.7°C). Marlborough in October experiences a subtle temperature decline, with average high-temperatures reducing from a moderately hot 73.4°F (23°C) in September to a comfortable 61.5°F (16.4°C). Weather in October »
Weather in November
The last month of the autumn, November, is another chilly month in Marlborough, Connecticut, with temperature in the range of an average high of 49.6°F (9.8°C) and an average low of 36.9°F (2.7°C). Marlborough's weather changes with the onset of November, slightly falling from a refreshing 61.5°F (16.4°C) in October to a chilly 49.6°F (9.8°C). Weather in November »
Weather in December
The first month of the winter, December, is still a cold month in Marlborough, Connecticut, with an average temperature varying between 40.3°F (4.6°C) and 29.7°F (-1.3°C). December comes with a decrease in the average high-temperature, falling from a chilly 49.6°F (9.8°C) in November to a wintry 40.3°F (4.6°C). Weather in December »
Updated: Jul 2, 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
What month is the coldest?
January is the coldest month, exhibiting average temperatures of 34.3°F (1.3°C) at the peak and 22.8°F (-5.1°C) at the base.
How many days does it rain?
Throughout the year, there are 99.9 rainfall days, and 9.41" (239mm) of precipitation is accumulated.
When does it snow?
January through May, November and December are months with snowfall.
How many days does it snow?
In Marlborough, during the entire year, snow falls for 22.3 days and aggregates up to 3.82" (97mm) of snow.
What is the most humid month?
With an average relative humidity of 79%, February is the most humid month.
What is the month with the least sunshine?
February and December, with an average of 4.6h of sunshine, are months with the least sunshine.
What is the snowiest month?
The month with the most snowfall in Marlborough is March, when snow falls for 5.3 days and typically aggregates up to 1.26" (32mm) of snow.
When is Daylight Saving Time (DST)?
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.
What is the least humid month?
With an average relative humidity of 71%, April is the least humid month.
When it does not snow?
In Marlborough, snow does not fall in June through October.
When are the longest days?
June has the longest days of the year, with an average of 15h and 6min of daylight.
What are the months with the highest UV index?
The months with the highest UV index are June through August, with an average maximum UV index of 6.
What are the warmest months?
The warmest temperatures in Marlborough occur during July, when averages reach a peak of 82.2°F (27.9°C) and a low of 64°F (17.8°C).
What month has the most sunshine?
The month with the most sunshine is August, with an average of 10.3h of sunshine.
What is the driest month?
September is the month with the least rainfall. Rain falls for 7.5 days and accumulates 0.35" (9mm) of precipitation.
What is the rainiest month?
The month with the most rainfall is December, when the rain falls for 6.8 days and typically aggregates up to 1.02" (26mm) of precipitation.
What is the month with the shortest days?
December has the shortest days of the year, with an average of 9h and 12min of daylight.
What is the month with the lowest UV index?
December is the month with the lowest UV index, with an average maximum UV index of 1.
Average temperature
Marlborough, CT
The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (34.3°F).
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (22.8°F).
Average pressure
Marlborough, CT
- Average pressure in January:
30.03"Hg - Average pressure in February:
30.01"Hg - Average pressure in March:
30.04"Hg - Average pressure in April:
29.98"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:
30.08"Hg - Average pressure in December:
30.05"Hg
The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
Marlborough, CT
- Average wind speed in January:
8.6mph - Average wind speed in February:
8.4mph - Average wind speed in March:
8.6mph - Average wind speed in April:
8.1mph - Average wind speed in May:
6.8mph - Average wind speed in June:
6.1mph
- Average wind speed in July:
5.7mph - Average wind speed in August:
5.6mph - Average wind speed in September:
6.2mph - Average wind speed in October:
7.4mph - Average wind speed in November:
7.8mph - Average wind speed in December:
8.3mph
The windiest months (with the highest average wind speed) are January and March (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).
Average humidity
Marlborough, CT
The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is April (71%).
Average rainfall
Marlborough, CT
- Average rainfall in January:
0.59" - Average rainfall in February:
0.55" - Average rainfall in March:
0.67" - Average rainfall in April:
0.91" - Average rainfall in May:
0.75" - Average rainfall in June:
0.87"
- Average rainfall in July:
0.91" - Average rainfall in August:
0.87" - Average rainfall in September:
0.35" - Average rainfall in October:
0.98" - Average rainfall in November:
0.94" - Average rainfall in December:
1.02"
The wettest month (with the highest rainfall) is December (1.02").
The driest month (with the least rainfall) is September (0.35").
Average rainfall days
Marlborough, CT
- Average rainfall days in January:
5.1 days - Average rainfall days in February:
5.8 days - Average rainfall days in March:
8.4 days - Average rainfall days in April:
9.1 days - Average rainfall days in May:
10 days - Average rainfall days in June:
9.6 days
- Average rainfall days in July:
11.8 days - Average rainfall days in August:
11.2 days - Average rainfall days in September:
7.5 days - Average rainfall days in October:
8.4 days - Average rainfall days in November:
6.2 days - Average rainfall days in December:
6.8 days
The month with the highest number of rainy days is July (11.8 days).
The month with the least rainy days is January (5.1 days).
Average snowfall
Marlborough, CT
- Average snowfall in January:
0.59" - Average snowfall in February:
0.63" - Average snowfall in March:
1.26" - Average snowfall in April:
0.08" - Average snowfall in May:
0.2" - Average snowfall in June:
0"
The month with the highest snowfall is March (1.26").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days
Marlborough, CT
- Average snowfall days in January:
4.9 days - Average snowfall days in February:
6.4 days - Average snowfall days in March:
5.3 days - Average snowfall days in April:
0.8 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 days - Average snowfall days in November:
0.7 days - Average snowfall days in December:
4.1 days
The month with the highest number of snowfall days is February (6.4 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight / Average sunshine
Marlborough, CT
- Average daylight in January:
9h and 4min - Average daylight in February:
10h and 4min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 2min - Average daylight in May:
14h and 3min - Average daylight in June:
15h and 1min
- Average daylight in July:
14h and 5min - Average daylight in August:
13h and 5min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 1min - Average daylight in November:
9h and 5min - Average daylight in December:
9h and 1min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in January:
5h and 0min - Average sunshine in February:
4h and 4min - Average sunshine in March:
5h and 5min - Average sunshine in April:
8h and 1min - Average sunshine in May:
8h and 1min - Average sunshine in June:
9h and 1min
- Average sunshine in July:
10h and 1min - Average sunshine in August:
10h and 2min - Average sunshine in September:
8h and 2min - Average sunshine in October:
5h and 5min - Average sunshine in November:
5h and 2min - Average sunshine in December:
4h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The months with the least sunshine are February and December (Average sunshine: 4h and 36min).
Average sunshine days
Marlborough, CT
- Average sunshine days in January:
21.8 days - Average sunshine days in February:
18.3 days - Average sunshine days in March:
18.2 days - Average sunshine days in April:
18.6 days - Average sunshine days in May:
18.8 days - Average sunshine days in June:
18.3 days
- Average sunshine days in July:
17.1 days - Average sunshine days in August:
17.8 days - Average sunshine days in September:
20.5 days - Average sunshine days in October:
20.8 days - Average sunshine days in November:
21.3 days - Average sunshine days in December:
20.2 days
The month with the most sunshine days is January (21.8 days).
The month with the least sunshine days is July (17.1 days).
Average UV index
Marlborough, CT
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover
Marlborough, CT
The months with the most cloud cover are February and March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility
Marlborough, CT
The months with the highest visibility are January, March, April, September, October, November and December (6mi).
The months with the lowest visibility are February, May, June, July and August (5mi).
Marlborough, Connecticut, USA
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