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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 Watertown, Massachusetts, is an icy winter month, with an average temperature ranging between min 21.7°F (-5.7°C) and max 33.6°F (0.9°C). The coldest period is January, when temperatures fluctuate between an average high of 33.6°F (0.9°C) and a low of 21.7°F (-5.7°C). Weather in January »
Weather in February
The last month of the winter, February, is another cold month in Watertown, Massachusetts, with an average temperature varying between 36.3°F (2.4°C) and 23°F (-5°C). Watertown records an average high-temperature of a still cold 36.3°F (2.4°C) in February, closely mirroring the climate of the previous month. Weather in February »
Weather in March
March, the first month of the spring in Watertown, is a frosty month, with temperature in the range of an average high of 43.3°F (6.3°C) and an average low of 30°F (-1.1°C). As March sets, the average high-temperature shows a slight increase, moving up from a wintry 36.3°F (2.4°C) in February to a chilly 43.3°F (6.3°C). Weather in March »
Weather in April
April in Watertown, Massachusetts, is a mild spring month, with an average temperature fluctuating between 39.9°F (4.4°C) and 55.9°F (13.3°C). The shift into April is characterized by a rise in the average high-temperature, transitioning from March's chilly 43.3°F (6.3°C) to a mild 55.9°F (13.3°C). Weather in April »
Weather in May
The last month of the spring, May, is an enjoyable month in Watertown, Massachusetts, with an average temperature varying between 66.7°F (19.3°C) and 49.6°F (9.8°C). In Watertown, the onset of May comes with an increased average high-temperature, moving from April's mild 55.9°F (13.3°C) to a comfortable 66.7°F (19.3°C). Weather in May »
Weather in June
June, the first month of the summer in Watertown, is a moderately hot month, with an average temperature varying between 75°F (23.9°C) and 56.8°F (13.8°C). A slight uplift in the average high-temperature marks June, adjusting from May's enjoyable 66.7°F (19.3°C) to a warm 75°F (23.9°C). Weather in June »
Weather in July
July, like June, in Watertown, Massachusetts, is another warm summer month, with temperature in the range of an average low of 64°F (17.8°C) and an average high of 81.9°F (27.7°C). July is the warmest month, with an average high-temperature of 81.9°F (27.7°C) and an average low-temperature of 64°F (17.8°C). The heat index for July is computed to be a hot 87.8°F (31°C). Weather in July »
Weather in August
August, the last month of the summer in Watertown, is another warm month, with an average temperature varying between 63°F (17.2°C) and 81°F (27.2°C). The beginning of August records an average high-temperature of a still moderately hot 81°F (27.2°C), marking a negligible difference from July's 81.9°F (27.7°C). Weather in August »
Weather in September
September, the first month of the autumn in Watertown, is still a pleasant month, with an average temperature varying between 73°F (22.8°C) and 56.3°F (13.5°C). Watertown's progression into September involves a minor drop in the average high-temperature, slightly receding from a moderately hot 81°F (27.2°C) in August to a pleasant 73°F (22.8°C). Weather in September »
Weather in October
October, like September, in Watertown, Massachusetts, is another refreshing autumn month, with an average temperature ranging between max 61°F (16.1°C) and min 47.3°F (8.5°C). The arrival of October corresponds with a shift in temperature, down from a pleasant 73°F (22.8°C) in September to a comfortable 61°F (16.1°C). Weather in October »
Weather in November
November, the last month of the autumn in Watertown, is also a frosty month, with an average temperature ranging between min 36.7°F (2.6°C) and max 49.3°F (9.6°C). Watertown's November weather features a mild decline in high-temperatures, reducing from an enjoyable 61°F (16.1°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 Watertown, is also an icy month, with temperature in the range of an average high of 39.2°F (4°C) and an average low of 28.8°F (-1.8°C). In December, the average high-temperature decreases from a frosty 49.3°F (9.6°C) in November to a wintry 39.2°F (4°C). Weather in December »
Updated: Jun 4, 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 Watertown, the lowest temperatures are generally noted in January, averaging a high of 33.6°F (0.9°C) and a low of 21.7°F (-5.7°C).
How much does it rain?
In Watertown, during the entire year, the rain falls for 85.9 days and collects up to 5.87" (149mm) of precipitation.
When does it snow?
January through May, November and December are months with snowfall.
How many days does it snow?
Throughout the year, there are 18.8 snowfall days, and 3.15" (80mm) 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?
With an average relative humidity of 78%, February is the most humid month.
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?
The least humid month is April, with an average relative humidity of 70%.
When it does not snow?
In Watertown, snow does not fall in June through October.
When are the longest days?
June has the longest days of the year, with an average of 15h and 12min of daylight.
What are the months with the highest UV index?
The months with the highest UV index are June through August, with an average maximum UV index of 6.
What are the warmest months?
July, with an average high of 81.9°F (27.7°C) and a low of 64°F (17.8°C), signifies the warmest month of the year.
What month has the most sunshine?
The month with the most sunshine is August, with an average of 10.5h of sunshine.
What is the driest month?
September is the month with the least rainfall. Rain falls for 6.6 days and accumulates 0.24" (6mm) of precipitation.
What is the rainiest month?
November is the month with the most rainfall. Rain falls for 5.6 days and accumulates 0.67" (17mm) of precipitation.
What is the snowiest month?
December is the month with the most snowfall. Snow falls for 2.6 days and accumulates 0.91" (23mm) of snow.
What is the month with the shortest days?
The month with the shortest days is December, with an average of 9h and 6min of daylight.
Average temperature
Watertown, MA
The warmest month (with the highest average high temperature) is July (81.9°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°F).
The coldest month (with the lowest average low temperature) is January (21.7°F).
Average pressure
Watertown, 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:
29.94"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 (29.92"Hg).
Average wind speed
Watertown, MA
- Average wind speed in January:
9.1mph - Average wind speed in February:
8.9mph - Average wind speed in March:
8.9mph - Average wind speed in April:
8.3mph - Average wind speed in May:
7.1mph - Average wind speed in June:
6.5mph
- Average wind speed in July:
5.9mph - Average wind speed in August:
5.8mph - Average wind speed in September:
6.3mph - Average wind speed in October:
7.6mph - Average wind speed in November:
8mph - Average wind speed in December:
8.6mph
The windiest month (with the highest average wind speed) is January (9.1mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).
Average humidity
Watertown, MA
The month with the highest relative humidity is February (78%).
The month with the lowest relative humidity is April (70%).
Average rainfall
Watertown, MA
- Average rainfall in January:
0.43" - Average rainfall in February:
0.39" - Average rainfall in March:
0.47" - Average rainfall in April:
0.63" - Average rainfall in May:
0.51" - Average rainfall in June:
0.51"
- Average rainfall in July:
0.51" - Average rainfall in August:
0.43" - Average rainfall in September:
0.24" - Average rainfall in October:
0.51" - Average rainfall in November:
0.67" - Average rainfall in December:
0.55"
The wettest month (with the highest rainfall) is November (0.67").
The driest month (with the least rainfall) is September (0.24").
Average rainfall days
Watertown, MA
- Average rainfall days in January:
5.7 days - Average rainfall days in February:
4.1 days - Average rainfall days in March:
6.8 days - Average rainfall days in April:
9 days - Average rainfall days in May:
8.9 days - Average rainfall days in June:
8.2 days
- Average rainfall days in July:
10.2 days - Average rainfall days in August:
7.8 days - Average rainfall days in September:
6.6 days - Average rainfall days in October:
6.9 days - Average rainfall days in November:
5.6 days - Average rainfall days in December:
6.1 days
The month with the highest number of rainy days is July (10.2 days).
The month with the least rainy days is February (4.1 days).
Average snowfall
Watertown, MA
- Average snowfall in January:
0.39" - Average snowfall in February:
0.67" - Average snowfall in March:
0.75" - Average snowfall in April:
0.08" - Average snowfall in May:
0.08" - Average snowfall in June:
0"
The month with the highest snowfall is December (0.91").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days
Watertown, MA
- Average snowfall days in January:
4.9 days - Average snowfall days in February:
4.8 days - Average snowfall days in March:
4.5 days - Average snowfall days in April:
0.9 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:
0.9 days - Average snowfall days in December:
2.6 days
The month with the highest number of snowfall days is January (4.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Watertown, 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 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 2min
- Average sunshine in July:
10h and 2min - Average sunshine in August:
10h and 3min - Average sunshine in September:
8h and 4min - Average sunshine in October:
6h and 1min - Average sunshine in November:
5h and 4min - 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
Watertown, MA
- Average sunshine days in January:
22.5 days - Average sunshine days in February:
20.2 days - Average sunshine days in March:
20.3 days - Average sunshine days in April:
18.3 days - Average sunshine days in May:
18.7 days - Average sunshine days in June:
17.5 days
- Average sunshine days in July:
17.8 days - Average sunshine days in August:
19.9 days - Average sunshine days in September:
21.4 days - Average sunshine days in October:
21.7 days - Average sunshine days in November:
22.5 days - Average sunshine days in December:
22.2 days
The months with the most sunshine days are January and November (22.5 days).
The month with the least sunshine days is June (17.5 days).
Average UV index
Watertown, 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
Watertown, MA
The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility
Watertown, 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).
Watertown, Massachusetts, USA
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