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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 Wellesley, Massachusetts, is an icy winter month, with an average temperature fluctuating between 33.1°F (0.6°C) and 21.2°F (-6°C). Wellesley's coldest month, January, registers temperatures that range from a high of 33.1°F (0.6°C) to a low of 21.2°F (-6°C). Weather in January »
Weather in February
February, the last month of the winter in Wellesley, 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). February's onset records an average high-temperature of a still icy 36.1°F (2.3°C), a near match to January's 33.1°F (0.6°C). Weather in February »
Weather in March
The first month of the spring, March, is a frosty month in Wellesley, Massachusetts, with an average temperature fluctuating between 43.5°F (6.4°C) and 29.1°F (-1.6°C). As February gives way to March, the average high-temperature displays a slight ascent, adjusting from an icy 36.1°F (2.3°C) to a frosty 43.5°F (6.4°C). Weather in March »
Weather in April
April in Wellesley, Massachusetts, is a refreshing spring month, with an average temperature varying between 39.6°F (4.2°C) and 55.9°F (13.3°C). An increase in the average high-temperature marks April, moving from March's frosty 43.5°F (6.4°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 Wellesley, Massachusetts, with an average temperature varying between 67.1°F (19.5°C) and 49.1°F (9.5°C). May brings a temperature change, with average high-temperatures moving from April's moderate 55.9°F (13.3°C) to an enjoyable 67.1°F (19.5°C). Weather in May »
Weather in June
June, the first month of the summer in Wellesley, is a moderately hot month, with an average temperature ranging between min 56.5°F (13.6°C) and max 75.2°F (24°C). The beginning of June marks a minor shift in the average high-temperature, moving from May's comfortable 67.1°F (19.5°C) to a warm 75.2°F (24°C). Weather in June »
Weather in July
July, the same as June, is another warm summer month in Wellesley, Massachusetts, with an average temperature ranging between min 63.5°F (17.5°C) and max 82.4°F (28°C). In Wellesley, the average temperatures in July are the highest, with a peak at 82.4°F (28°C) and a low of 63.5°F (17.5°C). July's average heat index is evaluated at 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 Wellesley, Massachusetts, with an average temperature fluctuating between 62.2°F (16.8°C) and 81°F (27.2°C). With the transition into August, Wellesley notes an average high-temperature of a still warm 81°F (27.2°C), closely resembling July. Weather in August »
Weather in September
The first month of the autumn, September, is still a pleasant month in Wellesley, Massachusetts, with an average temperature ranging between min 55.8°F (13.2°C) and max 73.2°F (22.9°C). September indicates a minor shift in the average high-temperature, from August's warm 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, in Wellesley, Massachusetts, is another refreshing autumn month, with an average temperature varying between 46.6°F (8.1°C) and 60.6°F (15.9°C). As September transitions to October, the average high-temperature falls from a pleasant 73.2°F (22.9°C) to a mild 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 Wellesley, Massachusetts, with an average temperature fluctuating between 36°F (2.2°C) and 49.1°F (9.5°C). The arrival of November corresponds with a shift in temperature, down from a moderate 60.6°F (15.9°C) in October to a chilly 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 Wellesley, 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 shift from November to December corresponds with a decrease in the average high-temperature, down to an icy 39°F (3.9°C) from a chilly 49.1°F (9.5°C). Weather in December »
[Resources]Frequently asked questions
What is the coldest time of year in Wellesley?
January, known for its average high temperature of 33.1°F (0.6°C) and an average low temperature of 21.2°F (-6°C), is the coldest month.
How much does it rain in Wellesley?
Throughout the year, there are 141.8 rainfall days, and 24.21" (615mm) of precipitation is accumulated.
When does it snow in Wellesley?
Months with snowfall are January through May, October through December.
How many days does it snow in Wellesley?
In Wellesley, Massachusetts, during the entire year, snow falls for 28.5 days and aggregates up to 15.91" (404mm) of snow.
What are the months with the lowest UV index in Wellesley?
The months with the lowest UV index in Wellesley, Massachusetts, are January through March, November and December, with an average maximum UV index of 2.
What is the most humid month in Wellesley?
With an average relative humidity of 79%, February is the most humid month.
When does it snow the most in Wellesley?
The month with the most snowfall in Wellesley, Massachusetts, 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 Wellesley?
February has the least sunshine of the year in Wellesley, with an average of 4.8h of sunshine.
What is the wettest month in Wellesley?
The month with the most rainfall in Wellesley 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) in Wellesley?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Wellesley, 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 Wellesley?
With an average relative humidity of 70%, April is the least humid month in Wellesley.
When it does not snow in Wellesley?
June through September are months without snowfall in Wellesley.
When are the longest days in Wellesley?
With an average of 15h and 12min of daylight, June has the longest days of the year in Wellesley, Massachusetts.
What are the months with the highest UV index in Wellesley?
June through August, with an average maximum UV index of 6, are months with the highest UV index in Wellesley.
What time of the year is the hottest in Wellesley?
In Wellesley, July is known for its average highest temperatures, reaching a high of 82.4°F (28°C) and a low of 63.5°F (17.5°C).
What month has the most sunshine in Wellesley?
The month with the most sunshine in Wellesley, Massachusetts, is August, with an average of 10.5h of sunshine.
What is the driest month in Wellesley?
September is the month with the least rainfall. Rain falls for 10.4 days and accumulates 1.18" (30mm) of precipitation.
What is the month with the shortest days in Wellesley?
The month with the shortest days in Wellesley is December, with an average of 9h and 6min of daylight.
Average temperature
Wellesley, 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
Wellesley, 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
Wellesley, 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
Wellesley, MA
The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is April (70%).
Average rainfall
Wellesley, 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
Wellesley, 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
Wellesley, 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
Wellesley, 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
Wellesley, 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 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
Wellesley, 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
Wellesley, 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
Wellesley, 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
Wellesley, 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).
Wellesley, Massachusetts, USA
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