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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 Dedham, Massachusetts, is a wintry winter month, with an average temperature varying between 33.6°F (0.9°C) and 21.9°F (-5.6°C). January is the coldest month, with the temperature often reaching an average high of 33.6°F (0.9°C) and an average low of 21.9°F (-5.6°C). Weather in January »
Weather in February
The last month of the winter, February, is also an icy month in Dedham, Massachusetts, with an average temperature varying between 36.5°F (2.5°C) and 23.2°F (-4.9°C). Transitioning into February, Dedham experiences an average high-temperature of a still wintry 36.5°F (2.5°C), marking a minor shift from the preceding month. Weather in February »
Weather in March
The first month of the spring, March, is a chilly month in Dedham, Massachusetts, with an average temperature varying between 30.7°F (-0.7°C) and 43.7°F (6.5°C). The arrival of March witnesses a small shift in the average high-temperature, moving from an icy 36.5°F (2.5°C) in February to a chilly 43.7°F (6.5°C). Weather in March »
Weather in April
April is a moderate spring month in Dedham, Massachusetts, with temperature in the range of an average low of 40.3°F (4.6°C) and an average high of 55.6°F (13.1°C). The onset of April marks an increase in the average high-temperature, moving from a chilly 43.7°F (6.5°C) in March to a moderate 55.6°F (13.1°C). Weather in April »
Weather in May
May, the last month of the spring in Dedham, is an enjoyable month, with an average temperature fluctuating between 50°F (10°C) and 66.6°F (19.2°C). May's arrival signals a temperature shift, moving from a mild 55.6°F (13.1°C) in April to a still refreshing 66.6°F (19.2°C). Weather in May »
Weather in June
June, the first month of the summer in Dedham, is a moderately hot month, with temperature in the range of an average low of 57°F (13.9°C) and an average high of 74.1°F (23.4°C). Dedham's weather in June presents a minor rise in the average high-temperature, moving from a refreshing 66.6°F (19.2°C) in May to a warm 74.1°F (23.4°C). Weather in June »
Weather in July
July, like June, in Dedham, Massachusetts, is another warm summer month, with an average temperature ranging between min 64.8°F (18.2°C) and max 81.3°F (27.4°C). July, with an average high of 81.3°F (27.4°C) and a low of 64.8°F (18.2°C), signifies the warmest month of the year. July's average heat index is calculated to be a tropical 86°F (30°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Dedham, Massachusetts, with an average temperature fluctuating between 63.1°F (17.3°C) and 80.4°F (26.9°C). August's advent denotes a minor fluctuation in the average high-temperature to a still warm 80.4°F (26.9°C) from July's 81.3°F (27.4°C). Weather in August »
Weather in September
September, the first month of the autumn in Dedham, is also an agreeable month, with temperature in the range of an average low of 56.5°F (13.6°C) and an average high of 72.7°F (22.6°C). The shift from August to September coincides with a small decrease in the average high-temperature, down to an agreeable 72.7°F (22.6°C) from a warm 80.4°F (26.9°C). Weather in September »
Weather in October
October, the same as September, is another enjoyable autumn month in Dedham, Massachusetts, with an average temperature varying between 61.3°F (16.3°C) and 47.3°F (8.5°C). October's arrival corresponds with a decrease in average high-temperatures, from September's agreeable 72.7°F (22.6°C) to a refreshing 61.3°F (16.3°C). Weather in October »
Weather in November
November, the last month of the autumn in Dedham, is another chilly month, with an average temperature varying between 49.3°F (9.6°C) and 36.9°F (2.7°C). Arrival of November comes with a reduction in the average high-temperature, falling from a refreshing 61.3°F (16.3°C) in October to a frosty 49.3°F (9.6°C). Weather in November »
Weather in December
December, the first month of the winter in Dedham, is also a wintry month, with an average temperature varying between 29.1°F (-1.6°C) and 39.6°F (4.2°C). December shows a mild decline in the average high-temperature, falling from November's chilly 49.3°F (9.6°C) to an icy 39.6°F (4.2°C). Weather in December »
Updated: Jul 3, 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 time of the year is the coldest in Dedham?
January is the coldest month of the year, registering average temperatures as high as 33.6°F (0.9°C) and as low as 21.9°F (-5.6°C).
How many days does it rain?
Throughout the year, there are 147.4 rainfall days, and 28.39" (721mm) of precipitation is accumulated.
When does it snow?
January through April, October through December are months with snowfall in Dedham.
How many days does it snow in Dedham?
Throughout the year, there are 32.7 snowfall days, and 22.01" (559mm) of snow is accumulated.
What are the months with the lowest UV index?
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
What is the most humid month?
The most humid month is February, with an average relative humidity of 78%.
What is the month with the least sunshine?
The month with the least sunshine is February, with an average of 4.7h of sunshine.
What is the snowiest month?
March is the month with the most snowfall. Snow falls for 7.3 days and accumulates 5.24" (133mm) 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 70%, April is the least humid month.
When it does not snow in Dedham?
May through September are months without snowfall.
When are the longest days?
With an average of 15h and 12min of daylight, June has the longest days of the year.
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 are the warmest months?
In Dedham, temperatures reach their average annual highs in July, measuring 81.3°F (27.4°C) and a minimum average of 64.8°F (18.2°C).
What month has the most sunshine?
With an average of 10.5h of sunshine, August has the most sunshine of the year.
What is the driest month?
The month with the least rainfall is September, when the rain falls for 11.8 days and typically collects 1.5" (38mm) of precipitation.
What is the rainiest month?
The month with the most rainfall is December, when the rain falls for 10.7 days and typically aggregates up to 2.95" (75mm) of precipitation.
What is the month with the shortest days?
The month with the shortest days is December, with an average of 9h and 12min of daylight.
Average temperature
Dedham, MA
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (33.6°F).
The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (21.9°F).
Average pressure
Dedham, 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:
30.03"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
Dedham, MA
- Average wind speed in January:
9.5mph - Average wind speed in February:
9.3mph - Average wind speed in March:
9.1mph - Average wind speed in April:
8.5mph - Average wind speed in May:
7.3mph - Average wind speed in June:
6.6mph
- Average wind speed in July:
6.2mph - Average wind speed in August:
6mph - Average wind speed in September:
6.5mph - Average wind speed in October:
7.9mph - Average wind speed in November:
8.5mph - Average wind speed in December:
8.9mph
The windiest month (with the highest average wind speed) is January (9.5mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity
Dedham, MA
The month with the highest relative humidity is February (78%).
The month with the lowest relative humidity is April (70%).
Average rainfall
Dedham, MA
- Average rainfall in January:
2.32" - Average rainfall in February:
2.2" - Average rainfall in March:
2.87" - Average rainfall in April:
2.91" - Average rainfall in May:
2.05" - Average rainfall in June:
2.24"
The wettest month (with the highest rainfall) is December (2.95").
The driest month (with the least rainfall) is September (1.5").
Average rainfall days
Dedham, MA
- Average rainfall days in January:
7.8 days - Average rainfall days in February:
7.8 days - Average rainfall days in March:
11.5 days - Average rainfall days in April:
14.7 days - Average rainfall days in May:
15.1 days - Average rainfall days in June:
15.1 days
- Average rainfall days in July:
15.8 days - Average rainfall days in August:
13.6 days - Average rainfall days in September:
11.8 days - Average rainfall days in October:
13.7 days - Average rainfall days in November:
9.8 days - Average rainfall days in December:
10.7 days
The month with the highest number of rainy days is July (15.8 days).
The months with the least rainy days are January and February (7.8 days).
Average snowfall
Dedham, MA
The month with the highest snowfall is March (5.24").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Dedham, MA
- Average snowfall days in January:
7.9 days - Average snowfall days in February:
8.2 days - Average snowfall days in March:
7.3 days - Average snowfall days in April:
1.3 days - Average snowfall days in May:
0 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:
0.2 days - Average snowfall days in November:
2 days - Average snowfall days in December:
5.8 days
The month with the highest number of snowfall days is February (8.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Dedham, 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 4min - Average sunshine in April:
8h and 1min - Average sunshine in May:
8h and 2min - 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 2min - Average sunshine in October:
6h and 1min - 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 30min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days
Dedham, MA
- Average sunshine days in January:
17.3 days - Average sunshine days in February:
14.1 days - Average sunshine days in March:
14.5 days - Average sunshine days in April:
13.2 days - Average sunshine days in May:
14 days - Average sunshine days in June:
13.6 days
- Average sunshine days in July:
13.7 days - Average sunshine days in August:
15.5 days - Average sunshine days in September:
15.8 days - Average sunshine days in October:
15.5 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 April (13.2 days).
Average UV index
Dedham, 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
Dedham, MA
The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility
Dedham, MA
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Dedham, Massachusetts, USA
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