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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
Climate and monthly weather forecast
Weather in January
January, like December, in Watertown, Connecticut, is an icy winter month, with an average temperature fluctuating between 33.3°F (0.7°C) and 21.4°F (-5.9°C). The month of January sees the lowest average temperatures, reaching 33.3°F (0.7°C) at the peak and 21.4°F (-5.9°C) at the low. Weather in January »
Weather in February
February, the last month of the winter in Watertown, is also an icy month, with temperature in the range of an average high of 36°F (2.2°C) and an average low of 21.9°F (-5.6°C). February's onset records an average high-temperature of a still icy 36°F (2.2°C), a near match to January's 33.3°F (0.7°C). Weather in February »
Weather in March
March, the first month of the spring in Watertown, is a frosty month, with an average temperature varying between 29.1°F (-1.6°C) and 44.1°F (6.7°C). As February transitions into March, Watertown notices a gentle rise in the average high-temperature, transitioning from a wintry 36°F (2.2°C) to a frosty 44.1°F (6.7°C). Weather in March »
Weather in April
April in Watertown, Connecticut, is a refreshing spring month, with an average temperature fluctuating between 56.7°F (13.7°C) and 39.7°F (4.3°C). April's arrival brings a change in high-temperatures, moving from a chilly 44.1°F (6.7°C) in March to a mild 56.7°F (13.7°C). Weather in April »
Weather in May
The last month of the spring, May, is an agreeable month in Watertown, Connecticut, with temperature in the range of an average high of 68.2°F (20.1°C) and an average low of 48.9°F (9.4°C). Watertown's weather shows a temperature rise with the arrival of May, moving from a mild 56.7°F (13.7°C) in April to an agreeable 68.2°F (20.1°C). Weather in May »
Weather in June
June, the first month of the summer in Watertown, is a warm month, with an average temperature ranging between max 76.1°F (24.5°C) and min 56.7°F (13.7°C). In June, the average high-temperature marginally rises from an agreeable 68.2°F (20.1°C) in May to a moderately hot 76.1°F (24.5°C). Weather in June »
Weather in July
July, like June, in Watertown, Connecticut, 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). July, characterized by an average high temperature of 82.4°F (28°C) and a low temperature of 63.1°F (17.3°C), is generally the warmest month. July's mean heat index is appraised at a tropical 89.6°F (32°C). Weather in July »
Weather in August
August, the last month of the summer in Watertown, is also a moderately hot month, with an average temperature ranging between max 80.6°F (27°C) and min 61.7°F (16.5°C). With the start of August, Watertown measures an average high-temperature of a still moderately hot 80.6°F (27°C), not significantly differing from July's 82.4°F (28°C). Weather in August »
Weather in September
September, the first month of the autumn in Watertown, is also an agreeable month, with temperature in the range of an average low of 55.6°F (13.1°C) and an average high of 73.2°F (22.9°C). With the onset of September, the average high-temperature subtly recedes from August's warm 80.6°F (27°C) to a pleasant 73.2°F (22.9°C). Weather in September »
Weather in October
October, the same as September, is another enjoyable autumn month in Watertown, Connecticut, with an average temperature fluctuating between 46.6°F (8.1°C) and 61°F (16.1°C). The onset of October comes with a shift in the average high-temperature, falling from a pleasant 73.2°F (22.9°C) in September to an enjoyable 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 fluctuating between 35.6°F (2°C) and 48.6°F (9.2°C). In the transition to November, Watertown observes a drop in the average high-temperature, moving from an enjoyable 61°F (16.1°C) in October to a frosty 48.6°F (9.2°C). Weather in November »
Weather in December
The first month of the winter, December, is also an icy month in Watertown, Connecticut, with an average temperature fluctuating between 38.7°F (3.7°C) and 28°F (-2.2°C). With the beginning of December, the average high-temperature shows a decrease, transitioning from a frosty 48.6°F (9.2°C) in November to a wintry 38.7°F (3.7°C). Weather in December »
Updated: Jul 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?
January is the coldest month, with an average high-temperature of 33.3°F (0.7°C) and an average low-temperature of 21.4°F (-5.9°C).
How many days does it rain?
Throughout the year, there are 158.5 rainfall days, and 34.57" (878mm) of precipitation is accumulated.
When does it snow?
January through May, October through December are months with snowfall.
How much does it snow?
In Watertown, during the entire year, snow falls for 34.9 days and aggregates up to 20.35" (517mm) of snow.
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 80%.
What is the snowiest month?
The month with the most snowfall in Watertown is February, when snow falls for 9.2 days and typically aggregates up to 5.39" (137mm) of snow.
What is the month with the least sunshine?
February has the least sunshine of the year, with an average of 4.5h 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 72%.
When it does not snow?
In Watertown, snow does not fall in June through September.
When are the longest days?
June has the longest days of the year, with an average of 15h and 6min of daylight.
When is the highest UV index?
June through August, with an average maximum UV index of 6, are months with the highest UV index.
What is the hottest time of year?
In Watertown, July is the warmest month, with temperatures averaging a high of 82.4°F (28°C) and a low of 63.1°F (17.3°C).
What is the month with the most sunshine?
July and August, with an average of 10.1h of sunshine, are months with the most sunshine.
What is the driest month?
September is the month with the least rainfall. Rain falls for 13 days and accumulates 2.13" (54mm) of precipitation.
What is the rainiest month?
December is the month with the most rainfall. Rain falls for 10.5 days and accumulates 3.78" (96mm) of precipitation.
What is the month with the shortest days?
The month with the shortest days in Watertown is December, with an average of 9h and 12min of daylight.
Average temperature
Watertown, CT
The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (33.3°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 (21.4°F).
Average pressure
Watertown, CT
- Average pressure in January:
30.04"Hg - Average pressure in February:
30.02"Hg - Average pressure in March:
30.05"Hg - Average pressure in April:
29.98"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:
30.09"Hg - Average pressure in December:
30.06"Hg
The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
Watertown, CT
- Average wind speed in January:
8.3mph - Average wind speed in February:
8.1mph - Average wind speed in March:
8.2mph - Average wind speed in April:
7.8mph - Average wind speed in May:
6.4mph - Average wind speed in June:
5.8mph
- Average wind speed in July:
5.2mph - Average wind speed in August:
5.2mph - Average wind speed in September:
5.8mph - Average wind speed in October:
7mph - Average wind speed in November:
7.5mph - Average wind speed in December:
7.9mph
The windiest month (with the highest average wind speed) is January (8.3mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).
Average humidity
Watertown, CT
The month with the highest relative humidity is February (80%).
The month with the lowest relative humidity is April (72%).
Average rainfall
Watertown, CT
- Average rainfall in January:
2.36" - Average rainfall in February:
2.44" - Average rainfall in March:
2.72" - Average rainfall in April:
2.99" - Average rainfall in May:
2.64" - Average rainfall in June:
3.03"
- Average rainfall in July:
3.19" - Average rainfall in August:
2.91" - Average rainfall in September:
2.13" - Average rainfall in October:
3.43" - Average rainfall in November:
2.95" - Average rainfall in December:
3.78"
The wettest month (with the highest rainfall) is December (3.78").
The driest month (with the least rainfall) is September (2.13").
Average rainfall days
Watertown, CT
- Average rainfall days in January:
7.3 days - Average rainfall days in February:
8 days - Average rainfall days in March:
11.4 days - Average rainfall days in April:
15 days - Average rainfall days in May:
16.8 days - Average rainfall days in June:
16.9 days
- Average rainfall days in July:
17.8 days - Average rainfall days in August:
16.8 days - Average rainfall days in September:
13 days - Average rainfall days in October:
14.4 days - Average rainfall days in November:
10.6 days - Average rainfall days in December:
10.5 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is January (7.3 days).
Average snowfall
Watertown, CT
- Average snowfall in January:
4.13" - Average snowfall in February:
5.39" - Average snowfall in March:
4.45" - Average snowfall in April:
1.46" - Average snowfall in May:
0.16" - Average snowfall in June:
0"
The month with the highest snowfall is February (5.39").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Watertown, CT
- Average snowfall days in January:
7.7 days - Average snowfall days in February:
9.2 days - Average snowfall days in March:
8 days - Average snowfall days in April:
1.6 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:
0.5 days - Average snowfall days in November:
1.6 days - Average snowfall days in December:
6.2 days
The month with the highest number of snowfall days is February (9.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Watertown, CT
- Average daylight in January:
9h and 4min - 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 3min - 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 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in January:
4h and 5min - Average sunshine in February:
4h and 3min - Average sunshine in March:
6h and 0min - Average sunshine in April:
8h and 1min - Average sunshine in May:
8h and 1min - Average sunshine in June:
9h and 1min
- Average sunshine in July:
10h and 1min - Average sunshine in August:
10h and 1min - Average sunshine in September:
8h and 2min - Average sunshine in October:
5h and 4min - Average sunshine in November:
5h and 3min - Average sunshine in December:
4h and 4min
The months with the most sunshine are July and August (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days
Watertown, CT
- Average sunshine days in January:
18.1 days - Average sunshine days in February:
13.2 days - Average sunshine days in March:
13.3 days - Average sunshine days in April:
12.9 days - Average sunshine days in May:
12.5 days - Average sunshine days in June:
11.1 days
- Average sunshine days in July:
11.2 days - Average sunshine days in August:
11.6 days - Average sunshine days in September:
14.7 days - Average sunshine days in October:
14.7 days - Average sunshine days in November:
17.2 days - Average sunshine days in December:
15.5 days
The month with the most sunshine days is January (18.1 days).
The month with the least sunshine days is June (11.1 days).
Average UV index
Watertown, CT
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, CT
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility
Watertown, CT
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).