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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 an icy winter month in Grafton, Massachusetts, with an average temperature ranging between min 20.5°F (-6.4°C) and max 32.5°F (0.3°C). January proves to be the coldest month, recording an average maximum temperature of 32.5°F (0.3°C) and a minimum temperature of 20.5°F (-6.4°C). Weather in January »
Weather in February
February, the last month of the winter in Grafton, is another cold month, with temperature in the range of an average low of 21.6°F (-5.8°C) and an average high of 35.8°F (2.1°C). February's average high-temperature is a still cold 35.8°F (2.1°C), maintaining a close comparison with January's 32.5°F (0.3°C). Weather in February »
Weather in March
The first month of the spring, March, is a chilly month in Grafton, Massachusetts, with temperature in the range of an average high of 43.3°F (6.3°C) and an average low of 28.9°F (-1.7°C). With the onset of March, Grafton observes a minor temperature ascent, with the average high-temperature adjusting from February's wintry 35.8°F (2.1°C) to a chilly 43.3°F (6.3°C). Weather in March »
Weather in April
April is a mild spring month in Grafton, Massachusetts, 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). With the onset of April, Grafton's average high-temperature experiences a rise, moving from March's frosty 43.3°F (6.3°C) to a refreshing 55.9°F (13.3°C). Weather in April »
Weather in May
The last month of the spring, May, is a refreshing month in Grafton, Massachusetts, with temperature in the range of an average high of 67.3°F (19.6°C) and an average low of 48.6°F (9.2°C). In Grafton, stepping into May brings a temperature increase, moving up from April's refreshing 55.9°F (13.3°C) to a comfortable 67.3°F (19.6°C). Weather in May »
Weather in June
June, the first month of the summer in Grafton, is a warm month, with an average temperature fluctuating between 74.5°F (23.6°C) and 55.6°F (13.1°C). A slight uplift in the average high-temperature marks June, adjusting from May's refreshing 67.3°F (19.6°C) to a moderately hot 74.5°F (23.6°C). Weather in June »
Weather in July
July, the same as June, is another warm summer month in Grafton, Massachusetts, with an average temperature varying between 81.7°F (27.6°C) and 62.6°F (17°C). July, noted for its average high-temperature of 81.7°F (27.6°C) and an average low-temperature of 62.6°F (17°C), is considered the warmest month. In July, the heat index is calculated to be a hot 87.8°F (31°C). Weather in July »
Weather in August
August, the last month of the summer in Grafton, is also a moderately hot month, with an average temperature ranging between max 80.1°F (26.7°C) and min 61.2°F (16.2°C). The commencement of August introduces an average high-temperature of a still moderately hot 80.1°F (26.7°C), closely mirroring the preceding month. Weather in August »
Weather in September
The first month of the autumn, September, is also an agreeable month in Grafton, Massachusetts, with an average temperature varying between 72.7°F (22.6°C) and 54.5°F (12.5°C). The arrival of September correlates with a minor temperature reduction, down from August's warm 80.1°F (26.7°C) to a pleasant 72.7°F (22.6°C). Weather in September »
Weather in October
October, like September, is a moderate autumn month in Grafton, Massachusetts, with temperature in the range of an average low of 45.7°F (7.6°C) and an average high of 59.9°F (15.5°C). The start of October comes with a reduction in the average high-temperature, receding from an agreeable 72.7°F (22.6°C) in September to a moderate 59.9°F (15.5°C). Weather in October »
Weather in November
November, the last month of the autumn in Grafton, is another chilly month, with an average temperature ranging between max 48.7°F (9.3°C) and min 35.2°F (1.8°C). November's arrival correlates with a reduction in the average high-temperature, down from a moderate 59.9°F (15.5°C) in October to a chilly 48.7°F (9.3°C). Weather in November »
Weather in December
The first month of the winter, December, is still a cold month in Grafton, Massachusetts, with an average temperature fluctuating between 27.3°F (-2.6°C) and 38.3°F (3.5°C). December brings a decrease in the average high-temperature, falling from November's chilly 48.7°F (9.3°C) to a wintry 38.3°F (3.5°C). Weather in December »
[Resources]Frequently asked questions
What is the coldest time of year in Grafton?
With an average high-temperature of 32.5°F (0.3°C) and an average low-temperature of 20.5°F (-6.4°C), January is the coldest month in Grafton, Massachusetts.
How many days does it rain in Grafton?
Throughout the year, there are 152.2 rainfall days, and 30.67" (779mm) of precipitation is accumulated.
When does it snow in Grafton?
January through May, November and December are months with snowfall in Grafton.
How many days does it snow in Grafton?
Throughout the year, in Grafton, Massachusetts, there are 32.5 snowfall days, and 18.78" (477mm) of snow is accumulated.
What are the months with the lowest UV index in Grafton?
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 in Grafton?
With an average relative humidity of 80%, February is the most humid month in Grafton.
What is the month with the least sunshine in Grafton?
With an average of 4.6h of sunshine, February has the least sunshine of the year.
What is the snowiest month in Grafton?
March is the month with the most snowfall in Grafton. Snow falls for 8.3 days and accumulates 4.92" (125mm) of snow.
When is Daylight Saving Time (DST) in Grafton?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Grafton, 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 in Grafton?
April is the least humid month in Grafton, Massachusetts, with an average relative humidity of 71%.
When it does not snow in Grafton?
In Grafton, Massachusetts, snow does not fall in June through October.
When are the longest days in Grafton?
June has the longest days of the year, with an average of 15h and 12min of daylight.
What is the month with the highest UV index in Grafton?
June through August, with an average maximum UV index of 6, are months with the highest UV index in Grafton, Massachusetts.
What are the warmest months in Grafton?
Grafton's warmest weather arrives in July, when temperatures average a high of 81.7°F (27.6°C) and a low of 62.6°F (17°C).
What month has the most sunshine in Grafton?
August has the most sunshine of the year in Grafton, Massachusetts, with an average of 10.1h of sunshine.
What is the driest month in Grafton?
The month with the least rainfall in Grafton is September, when the rain falls for 12.2 days and typically collects 1.54" (39mm) of precipitation.
What is the wettest month in Grafton?
The month with the most rainfall is December, when the rain falls for 10.3 days and typically aggregates up to 3.15" (80mm) of precipitation.
What is the month with the shortest days in Grafton?
With an average of 9h and 12min of daylight, December has the shortest days of the year in Grafton.
Average temperature
Grafton, MA
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (32.5°F).
The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).
Average pressure
Grafton, MA
- Average pressure in January:
30.01"Hg - Average pressure in February:
30"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:
30.06"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 (29.93"Hg).
Average wind speed
Grafton, MA
- Average wind speed in January:
8.9mph - Average wind speed in February:
8.9mph - Average wind speed in March:
8.9mph - Average wind speed in April:
8.4mph - Average wind speed in May:
7.1mph - Average wind speed in June:
6.4mph
- 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:
7.5mph - Average wind speed in November:
8mph - Average wind speed in December:
8.5mph
The windiest months (with the highest average wind speed) are January, February and March (8.9mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).
Average humidity
Grafton, MA
The month with the highest relative humidity is February (80%).
The month with the lowest relative humidity is April (71%).
Average rainfall
Grafton, MA
- Average rainfall in January:
2.48" - Average rainfall in February:
2.28" - Average rainfall in March:
2.72" - Average rainfall in April:
2.83" - Average rainfall in May:
2.48" - Average rainfall in June:
2.68"
- Average rainfall in July:
2.68" - Average rainfall in August:
2.36" - Average rainfall in September:
1.54" - Average rainfall in October:
2.72" - Average rainfall in November:
2.76" - Average rainfall in December:
3.15"
The wettest month (with the highest rainfall) is December (3.15").
The driest month (with the least rainfall) is September (1.54").
Average rainfall days
Grafton, MA
- Average rainfall days in January:
7.7 days - Average rainfall days in February:
8 days - Average rainfall days in March:
11.4 days - Average rainfall days in April:
14.5 days - Average rainfall days in May:
16.1 days - Average rainfall days in June:
16.1 days
- Average rainfall days in July:
16.8 days - Average rainfall days in August:
14.8 days - Average rainfall days in September:
12.2 days - Average rainfall days in October:
14 days - Average rainfall days in November:
10.3 days - Average rainfall days in December:
10.3 days
The month with the highest number of rainy days is July (16.8 days).
The month with the least rainy days is January (7.7 days).
Average snowfall
Grafton, MA
The month with the highest snowfall is March (4.92").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days
Grafton, MA
- Average snowfall days in January:
8.4 days - Average snowfall days in February:
7.8 days - Average snowfall days in March:
8.3 days - Average snowfall days in April:
1.4 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:
1.5 days - Average snowfall days in December:
5 days
The month with the highest number of snowfall days is January (8.4 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight / Average sunshine
Grafton, 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 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 12min).
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 0min
- Average sunshine in July:
10h and 0min - Average sunshine in August:
10h and 1min - Average sunshine in September:
8h and 1min - Average sunshine in October:
5h and 5min - Average sunshine in November:
5h and 2min - Average sunshine in December:
4h and 5min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days
Grafton, MA
- Average sunshine days in January:
16.5 days - Average sunshine days in February:
14.3 days - Average sunshine days in March:
13.8 days - Average sunshine days in April:
13.5 days - Average sunshine days in May:
12.9 days - Average sunshine days in June:
12.2 days
- Average sunshine days in July:
11.8 days - Average sunshine days in August:
14 days - Average sunshine days in September:
15.5 days - Average sunshine days in October:
14.6 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 July (11.8 days).
Average UV index
Grafton, 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
Grafton, MA
The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 36).
Average visibility
Grafton, MA
The months with the highest visibility are January, March, April, October, November and December (6mi).
The months with the lowest visibility are February, May, June, July, August and September (5mi).
Grafton, Massachusetts, USA
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