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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, the same as December, is a wintry winter month in Sudbury, Massachusetts, with an average temperature ranging between min 21.2°F (-6°C) and max 33.1°F (0.6°C). January, with its average high-temperature of 33.1°F (0.6°C) and an average low-temperature of 21.2°F (-6°C), holds the record as the coldest month. Weather in January »
Weather in February
February, the last month of the winter in Sudbury, is also an icy month, with an average temperature ranging between max 36.1°F (2.3°C) and min 21.7°F (-5.7°C). The start of February marks an average high-temperature of a still wintry 36.1°F (2.3°C), hardly distinguishable from the conditions in January. Weather in February »
Weather in March
The first month of the spring, March, is a frosty month in Sudbury, Massachusetts, with an average temperature ranging between max 43.5°F (6.4°C) and min 29.1°F (-1.6°C). March's onset brings a minor rise in the average high-temperature, moving from a cold 36.1°F (2.3°C) in February to a frosty 43.5°F (6.4°C). Weather in March »
Weather in April
April is a refreshing spring month in Sudbury, Massachusetts, with an average temperature varying between 39.6°F (4.2°C) and 55.9°F (13.3°C). Sudbury's weather in April shows a rise in the average high-temperature, moving up from March's chilly 43.5°F (6.4°C) to a moderate 55.9°F (13.3°C). Weather in April »
Weather in May
The last month of the spring, May, is a comfortable month in Sudbury, Massachusetts, with an average temperature fluctuating between 67.1°F (19.5°C) and 49.1°F (9.5°C). Entering May, Sudbury sees a temperature rise, with the average high-temperature advancing from April's 55.9°F (13.3°C) to a still refreshing 67.1°F (19.5°C). Weather in May »
Weather in June
June, the first month of the summer in Sudbury, is a moderately hot month, with temperature in the range of an average high of 75.2°F (24°C) and an average low of 56.5°F (13.6°C). In Sudbury, stepping into June brings a gentle temperature nudge, moving slightly up from May's enjoyable 67.1°F (19.5°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 Sudbury, Massachusetts, with temperature in the range of an average high of 82.4°F (28°C) and an average low of 63.5°F (17.5°C). The month of July sees the highest average temperatures, reaching 82.4°F (28°C) at the peak and 63.5°F (17.5°C) at the low. July's mean heat index is calculated to be a hot 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 Sudbury, Massachusetts, with an average temperature ranging between max 81°F (27.2°C) and min 62.2°F (16.8°C). The advent of August observes an average high-temperature of a still warm 81°F (27.2°C), nearly identical to July's 82.4°F (28°C). Weather in August »
Weather in September
The first month of the autumn, September, is still a pleasant month in Sudbury, Massachusetts, with an average temperature fluctuating between 73.2°F (22.9°C) and 55.8°F (13.2°C). With the onset of September, Sudbury's climate undergoes a slight change as the average high-temperature moves from a moderately hot 81°F (27.2°C) in August to an agreeable 73.2°F (22.9°C). Weather in September »
Weather in October
October, like September, is a moderate autumn month in Sudbury, Massachusetts, with temperature in the range of an average low of 46.6°F (8.1°C) and an average high of 60.6°F (15.9°C). During Sudbury's transition into October, the average high-temperature lessens, moving from an agreeable 73.2°F (22.9°C) in September to a moderate 60.6°F (15.9°C). Weather in October »
Weather in November
The last month of the autumn, November, is also a frosty month in Sudbury, Massachusetts, with an average temperature fluctuating between 49.1°F (9.5°C) and 36°F (2.2°C). During Sudbury's transition into November, the average high-temperature lessens, moving from a moderate 60.6°F (15.9°C) in October to a frosty 49.1°F (9.5°C). Weather in November »
Weather in December
The first month of the winter, December, is also an icy month in Sudbury, Massachusetts, with temperature in the range of an average high of 39°F (3.9°C) and an average low of 28.4°F (-2°C). The transition into December involves a decrease in the average high-temperature, falling from a chilly 49.1°F (9.5°C) in November to an icy 39°F (3.9°C). Weather in December »
Updated: Jul 1, 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 in Sudbury, exhibiting average temperatures of 33.1°F (0.6°C) at the peak and 21.2°F (-6°C) at the base.
How many days does it rain?
Throughout the year, there are 141.8 rainfall days, and 24.21" (615mm) of precipitation is accumulated.
When does it snow?
Months with snowfall are January through May, October through December.
How many days does it snow?
Throughout the year, in Sudbury, there are 28.5 snowfall days, and 15.91" (404mm) of snow is accumulated.
What are the months with the lowest UV index?
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2.
What is the most humid month?
With an average relative humidity of 79%, February is the most humid month.
When does it snow the most?
The month with the most snowfall is February, when snow falls for 7 days and typically aggregates up to 4.17" (106mm) of snow.
What is the month with the least sunshine in Sudbury?
The month with the least sunshine is February, with an average of 4.8h of sunshine.
What is the rainiest month?
The month with the most rainfall is March, when the rain falls for 12.2 days and typically aggregates up to 2.4" (61mm) of precipitation.
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 70%, April is the least humid month.
When it does not snow?
June through September are months without snowfall.
When are the longest days?
The month with the longest days is June, with an average of 15h and 12min of daylight.
When is the highest UV index?
The months with the highest UV index are June through August, with an average maximum UV index of 6.
What time of the year is the hottest?
Sudbury's July weather, with an average high temperature of 82.4°F (28°C) and an average low temperature of 63.5°F (17.5°C), tends to be the warmest of the year.
What month has the most sunshine?
August has the most sunshine of the year, with an average of 10.5h of sunshine.
What is the driest month?
The month with the least rainfall is September, when the rain falls for 10.4 days and typically collects 1.18" (30mm) of precipitation.
What is the month with the shortest days in Sudbury?
December has the shortest days of the year, with an average of 9h and 6min of daylight.
Average temperature
Sudbury, MA
The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (33.1°F).
The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (21.2°F).
Average pressure
Sudbury, 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:
29.95"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:
30.04"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
Sudbury, MA
- Average wind speed in January:
8.8mph - Average wind speed in February:
8.7mph - Average wind speed in March:
8.6mph - Average wind speed in April:
8.1mph - Average wind speed in May:
6.9mph - Average wind speed in June:
6.3mph
- Average wind speed in July:
5.8mph - Average wind speed in August:
5.7mph - Average wind speed in September:
6.2mph - Average wind speed in October:
7.3mph - Average wind speed in November:
7.7mph - Average wind speed in December:
8.3mph
The windiest month (with the highest average wind speed) is January (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).
Average humidity
Sudbury, MA
The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is April (70%).
Average rainfall
Sudbury, MA
- Average rainfall in January:
1.93" - Average rainfall in February:
1.89" - Average rainfall in March:
2.4" - Average rainfall in April:
2.36" - Average rainfall in May:
1.85" - Average rainfall in June:
2.13"
- Average rainfall in July:
1.89" - Average rainfall in August:
1.73" - Average rainfall in September:
1.18" - Average rainfall in October:
2.17" - Average rainfall in November:
2.32" - Average rainfall in December:
2.36"
The wettest month (with the highest rainfall) is March (2.4").
The driest month (with the least rainfall) is September (1.18").
Average rainfall days
Sudbury, MA
- Average rainfall days in January:
7.3 days - Average rainfall days in February:
7.8 days - Average rainfall days in March:
12.2 days - Average rainfall days in April:
14.2 days - Average rainfall days in May:
14.7 days - Average rainfall days in June:
14.7 days
- Average rainfall days in July:
15.6 days - Average rainfall days in August:
13 days - Average rainfall days in September:
10.4 days - Average rainfall days in October:
12.7 days - Average rainfall days in November:
9.6 days - Average rainfall days in December:
9.6 days
The month with the highest number of rainy days is July (15.6 days).
The month with the least rainy days is January (7.3 days).
Average snowfall
Sudbury, MA
- Average snowfall in January:
2.68" - Average snowfall in February:
4.17" - Average snowfall in March:
3.7" - Average snowfall in April:
0.94" - Average snowfall in May:
0.08" - Average snowfall in June:
0"
The month with the highest snowfall is February (4.17").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Sudbury, MA
- Average snowfall days in January:
7.2 days - Average snowfall days in February:
7 days - Average snowfall days in March:
6.5 days - Average snowfall days in April:
1.1 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:
0.1 days - Average snowfall days in November:
1.2 days - Average snowfall days in December:
5.3 days
The month with the highest number of snowfall days is January (7.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Sudbury, MA
- Average daylight in January:
9h and 3min - 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 4min - 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 0min - 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 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in January:
5h and 1min - Average sunshine in February:
4h and 5min - Average sunshine in March:
5h and 5min - Average sunshine in April:
8h and 1min - Average sunshine in May:
8h and 4min - Average sunshine in June:
9h and 1min
- Average sunshine in July:
10h and 1min - Average sunshine in August:
10h and 3min - Average sunshine in September:
8h and 3min - Average sunshine in October:
6h and 1min - Average sunshine in November:
5h and 4min - Average sunshine in December:
5h and 0min
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 48min).
Average sunshine days
Sudbury, MA
- Average sunshine days in January:
17.4 days - Average sunshine days in February:
14.5 days - Average sunshine days in March:
13.6 days - Average sunshine days in April:
13.2 days - Average sunshine days in May:
14.4 days - Average sunshine days in June:
13.5 days
- Average sunshine days in July:
13.9 days - Average sunshine days in August:
15.9 days - Average sunshine days in September:
17.3 days - Average sunshine days in October:
15.8 days - Average sunshine days in November:
18.5 days - Average sunshine days in December:
16.6 days
The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is April (13.2 days).
Average UV index
Sudbury, 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
Sudbury, MA
The month with the most cloud cover is March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility
Sudbury, MA
The months with the highest visibility are January, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is February (5mi).
Sudbury, Massachusetts, USA
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