Climate and monthly weather forecast
Watertown, CT

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Weather in January

January, like December, in Watertown, Connecticut, is an icy winter month, with temperature in the range of an average low of 21.4°F (-5.9°C) and an average high of 33.3°F (0.7°C). Watertown experiences its lowest average temperatures in January, reaching a peak of 33.3°F (0.7°C) and a minimum of 21.4°F (-5.9°C). Weather in January »

Weather in February

The last month of the winter, February, is also a wintry month in Watertown, Connecticut, with an average temperature varying between 21.9°F (-5.6°C) and 36°F (2.2°C). Watertown indicates an average high-temperature of a still cold 36°F (2.2°C) in February, showing minor variation from January's 33.3°F (0.7°C). Weather in February »

Weather in March

The first month of the spring, March, is a chilly month in Watertown, Connecticut, with temperature in the range of an average low of 29.1°F (-1.6°C) and an average high of 44.1°F (6.7°C). Watertown in March experiences a slight uptick in the average high-temperature, adjusting from February's cold 36°F (2.2°C) to a chilly 44.1°F (6.7°C). Weather in March »

Weather in April

April is a mild spring month in Watertown, Connecticut, with an average temperature ranging between min 39.7°F (4.3°C) and max 56.7°F (13.7°C). Watertown, Connecticut, experiences a temperature shift with the start of April, with average high-temperatures moving from a frosty 44.1°F (6.7°C) in March to a mild 56.7°F (13.7°C). Weather in April »

Weather in May

May, the last month of the spring in Watertown, is a pleasant month, with temperature in the range of an average low of 48.9°F (9.4°C) and an average high of 68.2°F (20.1°C). The shift from April to May brings an increase in the average high-temperature, moving from a mild 56.7°F (13.7°C) to a pleasant 68.2°F (20.1°C). Weather in May »

Weather in June

The first month of the summer, June, is a moderately hot month in Watertown, Connecticut, with an average temperature fluctuating between 76.1°F (24.5°C) and 56.7°F (13.7°C). In June, the meteorological conditions subtly change with the average high-temperature edging from a pleasant 68.2°F (20.1°C) in May to a warm 76.1°F (24.5°C). Weather in June »

Weather in July

July, like June, in Watertown, Connecticut, is another warm summer month, with an average temperature varying between 63.1°F (17.3°C) and 82.4°F (28°C). July, with its average high-temperature of 82.4°F (28°C) and an average low-temperature of 63.1°F (17.3°C), holds the record as the warmest month. The heat index for July is calculated to be a tropical 89.6°F (32°C). Weather in July »

Weather in August

August, the last month of the summer in Watertown, is another warm month, with an average temperature ranging between min 61.7°F (16.5°C) and max 80.6°F (27°C). With the onset of August, the average high-temperature registers at a still warm 80.6°F (27°C), subtly different from July's 82.4°F (28°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 ranging between max 73.2°F (22.9°C) and min 55.6°F (13.1°C). With the arrival of September, Watertown notices a mild change in the average high-temperature, sliding 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, like September, in Watertown, Connecticut, is another comfortable autumn month, with an average temperature ranging between min 46.6°F (8.1°C) and max 61°F (16.1°C). The decrease of average high-temperatures is mild in October, with a decline from an agreeable 73.2°F (22.9°C) in September to a comfortable 61°F (16.1°C). Weather in October »

Weather in November

The last month of the autumn, November, is another chilly month in Watertown, Connecticut, with temperature in the range of an average high of 48.6°F (9.2°C) and an average low of 35.6°F (2°C). Arrival of November comes with a reduction in the average high-temperature, falling 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

December, the first month of the winter in Watertown, is also a wintry month, with an average temperature varying between 28°F (-2.2°C) and 38.7°F (3.7°C). With the onset of December, Watertown's average high-temperature adjusts, receding from November's chilly 48.6°F (9.2°C) to a cold 38.7°F (3.7°C). Weather in December »
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Frequently asked questions

What is the coldest time of year in Watertown?

January, with an average high of 33.3°F (0.7°C) and a low of 21.4°F (-5.9°C), signifies the coldest month of the year in Watertown.

How much does it rain in Watertown?

In Watertown, Connecticut, during the entire year, the rain falls for 158.5 days and collects up to 34.57" (878mm) of precipitation.

When does it snow in Watertown?

Months with snowfall in Watertown, Connecticut, are January through May, October through December.

How much does it snow in Watertown?

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 in Watertown?

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 in Watertown?

The most humid month is February, with an average relative humidity of 80%.

What is the snowiest month in Watertown?

The month with the most snowfall 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 in Watertown?

The month with the least sunshine in Watertown, Connecticut, is February, with an average of 4.5h of sunshine.

When is Daylight Saving Time (DST) in Watertown?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Watertown, Connecticut, 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 Watertown?

The least humid month in Watertown, Connecticut, is April, with an average relative humidity of 72%.

When it does not snow in Watertown?

In Watertown, Connecticut, snow does not fall in June through September.

When are the longest days in Watertown?

With an average of 15h and 6min of daylight, June has the longest days of the year.

What are the months with the highest UV index in Watertown?

June through August, with an average maximum UV index of 6, are months with the highest UV index in Watertown, Connecticut.

What is the hottest time of year in Watertown?

Watertown's temperatures tend to reach their peak averages in July, with a high of 82.4°F (28°C) and a low of 63.1°F (17.3°C).

What are the months with the most sunshine in Watertown?

The months with the most sunshine are July and August, with an average of 10.1h of sunshine.

What is the driest month in Watertown?

September is the month with the least rainfall in Watertown, Connecticut. Rain falls for 13 days and accumulates 2.13" (54mm) of precipitation.

What is the rainiest month in Watertown?

The month with the most rainfall in Watertown is December, when the rain falls for 10.5 days and typically aggregates up to 3.78" (96mm) of precipitation.

What is the month with the shortest days in Watertown?

With an average of 9h and 12min of daylight, December has the shortest days of the year.

Average temperature
Watertown, CT

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).

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Average pressure
Watertown, CT

Average pressure - Watertown, CT

The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed
Watertown, CT

Average wind speed - Watertown, CT

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).

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Average rainfall
Watertown, CT

Average rainfall - Watertown, CT

The wettest month (with the highest rainfall) is December (3.78").
The driest month (with the least rainfall) is September (2.13").

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Average rainfall days
Watertown, CT

Average rainfall days - Watertown, CT

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).

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Average snowfall
Watertown, CT

Average snowfall - Watertown, CT

The month with the highest snowfall is February (5.39").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days
Watertown, CT

Average snowfall days - Watertown, CT

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).

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Average daylight / Average sunshine
Watertown, CT

Average daylight / Average sunshine - Watertown, CT

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).

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).

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Average sunshine days
Watertown, CT

Average sunshine days - Watertown, CT

The month with the most sunshine days is January (18.1 days).
The month with the least sunshine days is June (11.1 days).

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Average UV index
Watertown, CT

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).

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Average visibility
Watertown, CT

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).

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Watertown, Connecticut, USA

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