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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 another cold winter month in Holliston, Massachusetts, with an average temperature varying between 21°F (-6.1°C) and 33.1°F (0.6°C). January, known for its average high temperature of 33.1°F (0.6°C) and an average low temperature of 21°F (-6.1°C), is the coldest month. Weather in January »
Weather in February
February, the last month of the winter in Holliston, is also an icy month, with temperature in the range of an average high of 36.1°F (2.3°C) and an average low of 21.7°F (-5.7°C). February's arrival brings an average high-temperature of a still wintry 36.1°F (2.3°C), slightly deviating from January's 33.1°F (0.6°C). Weather in February »
Weather in March
The first month of the spring, March, is a chilly month in Holliston, Massachusetts, with an average temperature varying between 28.9°F (-1.7°C) and 43.5°F (6.4°C). As February gives way to March, the average high-temperature displays a slight ascent, adjusting from a cold 36.1°F (2.3°C) to a chilly 43.5°F (6.4°C). Weather in March »
Weather in April
April is a refreshing spring month in Holliston, Massachusetts, with an average temperature ranging between max 56.1°F (13.4°C) and min 39.2°F (4°C). As March transitions into April, a change in temperatures is observed, with average highs moving from a frosty 43.5°F (6.4°C) to a moderate 56.1°F (13.4°C). Weather in April »
Weather in May
May, the last month of the spring in Holliston, is a comfortable month, with an average temperature fluctuating between 48.9°F (9.4°C) and 67.3°F (19.6°C). May brings a temperature change, with average high-temperatures moving from April's refreshing 56.1°F (13.4°C) to an enjoyable 67.3°F (19.6°C). Weather in May »
Weather in June
The first month of the summer, June, is a moderately hot month in Holliston, Massachusetts, with an average temperature ranging between max 75.2°F (24°C) and min 56.5°F (13.6°C). Holliston's transition into June brings a slight rise in the average high-temperature, moving from a refreshing 67.3°F (19.6°C) in May to a moderately hot 75.2°F (24°C). Weather in June »
Weather in July
July, like June, in Holliston, Massachusetts, is another warm summer month, with temperature in the range of an average low of 63.1°F (17.3°C) and an average high of 82.4°F (28°C). Holliston witnesses the warmest weather in July, with temperatures averaging a high of 82.4°F (28°C) and a low of 63.1°F (17.3°C). In July, the average heat index is calculated to be 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 Holliston, Massachusetts, with an average temperature ranging between max 81°F (27.2°C) and min 61.9°F (16.6°C). The onset of August notes an average high-temperature of a still warm 81°F (27.2°C), subtly shifted from July's 82.4°F (28°C). Weather in August »
Weather in September
September, the first month of the autumn in Holliston, is still a pleasant month, with an average temperature ranging between min 55.6°F (13.1°C) and max 73.2°F (22.9°C). With the onset of September, the average high-temperature subtly recedes from August's moderately hot 81°F (27.2°C) to a pleasant 73.2°F (22.9°C). Weather in September »
Weather in October
October, the same as September, is another refreshing autumn month in Holliston, Massachusetts, with an average temperature fluctuating between 60.8°F (16°C) and 46.2°F (7.9°C). The beginning of October marks a decrease in the average high-temperature, transitioning from an agreeable 73.2°F (22.9°C) in September to an enjoyable 60.8°F (16°C). Weather in October »
Weather in November
November, the last month of the autumn in Holliston, is also a frosty month, with an average temperature fluctuating between 35.8°F (2.1°C) and 49.1°F (9.5°C). As October transitions into November, Holliston sees a drop in the average high-temperature, transitioning from a refreshing 60.8°F (16°C) to a frosty 49.1°F (9.5°C). Weather in November »
Weather in December
December, the first month of the winter in Holliston, is also a wintry month, with temperature in the range of an average high of 39°F (3.9°C) and an average low of 28°F (-2.2°C). December suggests a modest reduction in the average high-temperature, shifting from a frosty 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 part of the year is the coldest?
In Holliston, January registers the lowest temperatures, averaging 33.1°F (0.6°C) at the peak and 21°F (-6.1°C) at the lowest.
How much does it rain?
In Holliston, during the entire year, the rain falls for 157.5 days and collects up to 29.53" (750mm) of precipitation.
When does it snow?
Months with snowfall are January through May, October through December.
How many days does it snow?
In Holliston, during the entire year, snow falls for 28.8 days and aggregates up to 17.32" (440mm) of snow.
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?
February is the most humid month, with an average relative humidity of 79%.
What is the snowiest month?
February is the month with the most snowfall. Snow falls for 7.8 days and accumulates 4.61" (117mm) of snow.
What is the month with the least sunshine?
The month with the least sunshine is February, with an average of 4.7h of sunshine.
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?
April is the least humid month, with an average relative humidity of 70%.
What is the rainiest month?
The month with the most rainfall is April, when the rain falls for 14.6 days and typically aggregates up to 2.87" (73mm) of precipitation.
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.
What is the month with the highest UV index?
June through August, with an average maximum UV index of 6, are months with the highest UV index.
What time of the year is the hottest?
During the warmest month in Holliston, July, temperatures average a high of 82.4°F (28°C) and a low of 63.1°F (17.3°C).
What month has the most sunshine?
With an average of 10.4h of sunshine, August has the most sunshine of the year.
What is the driest month?
September is the month with the least rainfall. Rain falls for 12.6 days and accumulates 1.54" (39mm) of precipitation.
What is the month with the shortest days?
The month with the shortest days in Holliston is December, with an average of 9h and 12min of daylight.
Average temperature
Holliston, 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 (63.1°F).
The coldest month (with the lowest average low temperature) is January (21°F).
Average pressure
Holliston, 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:
30.04"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
Holliston, 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:
6.1mph - Average wind speed in October:
7.3mph - Average wind speed in November:
7.7mph - Average wind speed in December:
8.2mph
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
Holliston, MA
The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is April (70%).
Average rainfall
Holliston, MA
- Average rainfall in January:
2.24" - Average rainfall in February:
2.2" - Average rainfall in March:
2.56" - Average rainfall in April:
2.87" - Average rainfall in May:
2.32" - Average rainfall in June:
2.68"
- Average rainfall in July:
2.52" - Average rainfall in August:
2.4" - Average rainfall in September:
1.54" - Average rainfall in October:
2.64" - Average rainfall in November:
2.72" - Average rainfall in December:
2.83"
The wettest month (with the highest rainfall) is April (2.87").
The driest month (with the least rainfall) is September (1.54").
Average rainfall days
Holliston, MA
- Average rainfall days in January:
7.5 days - Average rainfall days in February:
8.4 days - Average rainfall days in March:
11.8 days - Average rainfall days in April:
14.6 days - Average rainfall days in May:
16.8 days - Average rainfall days in June:
17.2 days
- Average rainfall days in July:
18.4 days - Average rainfall days in August:
15.2 days - Average rainfall days in September:
12.6 days - Average rainfall days in October:
14.6 days - Average rainfall days in November:
10.3 days - Average rainfall days in December:
10.1 days
The month with the highest number of rainy days is July (18.4 days).
The month with the least rainy days is January (7.5 days).
Average snowfall
Holliston, MA
The month with the highest snowfall is February (4.61").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Holliston, MA
- Average snowfall days in January:
7.1 days - Average snowfall days in February:
7.8 days - Average snowfall days in March:
6.6 days - Average snowfall days in April:
1.3 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:
1.1 days - Average snowfall days in December:
4.7 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
Holliston, 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 1min - 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 3min - 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 3min - Average sunshine in October:
6h and 0min - Average sunshine in November:
5h and 3min - Average sunshine in December:
5h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days
Holliston, MA
- Average sunshine days in January:
17.5 days - Average sunshine days in February:
14.3 days - Average sunshine days in March:
15.2 days - Average sunshine days in April:
12.9 days - Average sunshine days in May:
11.8 days - Average sunshine days in June:
11 days
- Average sunshine days in July:
11.3 days - Average sunshine days in August:
13 days - Average sunshine days in September:
14.5 days - Average sunshine days in October:
14.5 days - Average sunshine days in November:
17.6 days - Average sunshine days in December:
16 days
The month with the most sunshine days is November (17.6 days).
The month with the least sunshine days is June (11 days).
Average UV index
Holliston, 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
Holliston, MA
The month with the most cloud cover is March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility
Holliston, MA
The months with the highest visibility are January, March, April, May, June, July, October, November and December (6mi).
The months with the lowest visibility are February, August and September (5mi).
Holliston, Massachusetts, USA
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