Monthly weather forecast and climate
Watertown, CT

Weather in January

January, like December, in Watertown, Connecticut, is a wintry winter month, with average temperature fluctuating between 33.3°F (0.7°C) and 21.4°F (-5.9°C). With an average high-temperature of 33.3°F (0.7°C) and an average low-temperature of 21.4°F (-5.9°C), January is the coldest month. Weather in January »

Weather in February

The last month of the winter, February, is another cold month in Watertown, Connecticut, with average temperature ranging between max 36°F (2.2°C) and min 21.9°F (-5.6°C). In Watertown, Connecticut, the average high-temperature in February is practically the same as in January - a still wintry 36°F (2.2°C). Weather in February »

Weather in March

The first month of the spring, March, is a frosty month in Watertown, Connecticut, with average temperature ranging between max 44.1°F (6.7°C) and min 29.1°F (-1.6°C). In Watertown, the average high-temperature marginally rises, from a cold 36°F (2.2°C) in February, to a frosty 44.1°F (6.7°C). Weather in March »

Weather in April

April in Watertown, Connecticut, is a mild spring month, with average temperature ranging between max 56.7°F (13.7°C) and min 39.7°F (4.3°C). In Watertown, Connecticut, the average high-temperature in April increases, from a chilly 44.1°F (6.7°C) in March, to a moderate 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 average temperature fluctuating between 48.9°F (9.4°C) and 68.2°F (20.1°C). In May, the average high-temperature rises, from a moderate 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 moderately hot month, with average temperature varying between 56.7°F (13.7°C) and 76.1°F (24.5°C). In June, the average high-temperature marginally rises, from a pleasant 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 a moderately hot summer month, with temperature in the range of an average high of 82.4°F (28°C) and an average low of 63.1°F (17.3°C). With an average high-temperature of 82.4°F (28°C) and an average low-temperature of 63.1°F (17.3°C), July is the warmest month. In July, the average heat index is evaluated at a tropical 88.7°F (31.5°C). Weather in July »

Weather in August

The last month of the summer, August, is another warm month in Watertown, Connecticut, with average temperature varying between 61.7°F (16.5°C) and 80.6°F (27°C). In August, the average high-temperature is relatively the same as in July - a still warm 80.6°F (27°C). Weather in August »

Weather in September

September, the first month of the autumn, in Watertown, is still a pleasant month, with average temperature ranging between min 55.6°F (13.1°C) and max 73.2°F (22.9°C). In Watertown, Connecticut, the average high-temperature in September slightly decreases, from a warm 80.6°F (27°C) in August, to an agreeable 73.2°F (22.9°C). Weather in September »

Weather in October

October, the same as September, is another comfortable autumn month in Watertown, Connecticut, with average temperature varying between 61°F (16.1°C) and 46.6°F (8.1°C). In Watertown, the average high-temperature decreases, from an agreeable 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 another chilly month, with average temperature varying between 35.6°F (2°C) and 48.6°F (9.2°C). In Watertown, the average high-temperature drops, from a comfortable 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 still a cold month, with average temperature fluctuating between 28°F (-2.2°C) and 38.7°F (3.7°C). In December, the average high-temperature drops, from a chilly 48.6°F (9.2°C) in November, to a cold 38.7°F (3.7°C). Weather in December »
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FAQ

What is the coldest month in Watertown?

With an average high-temperature of 33.3°F (0.7°C) and an average low-temperature of 21.4°F (-5.9°C), January is the coldest month in Watertown, Connecticut.

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?

January through May, October through December are months with snowfall.

How much does it snow in Watertown?

Throughout the year, there are 34.9 snowfall days, and 20.35" (517mm) of snow is accumulated.

What is the month with the lowest UV index in Watertown?

Months with the lowest UV index in Watertown, Connecticut, 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 in Watertown 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 is February, with an average of 4.5h of sunshine.

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?

The month with the longest days in Watertown is June, with an average of 15.2h of daylight.

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.

What is the warmest month in Watertown?

July is the warmest month, with an average high-temperature of 82.4°F (28°C) and an average low-temperature of 63.1°F (17.3°C).

What are the months with the most sunshine in Watertown?

Months with the most sunshine in Watertown, Connecticut, are July and August, with an average of 10.1h of sunshine.

What is the driest month in Watertown?

The month with the least rainfall is September when the rain falls for 13 days and typically collects 2.13" (54mm) of precipitation.

What is the wettest month in Watertown?

The month with the most rainfall 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?

December has the shortest days of the year, with an average of 9.2h of daylight.

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").
The month with the lowest atmospheric pressure is June (29.93").

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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").
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).
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: 15.2h).
The month with the shortest days is December (Average daylight: 9.2h).

Months with the most sunshine are July and August (Average sunshine: 10.1h).
The month with the least sunshine is February (Average sunshine: 4.5h).

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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

Months with the highest UV index are June, July and August (UV index 6).
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

Months with the highest visibility are January, March, April, October, November and December (6mi).
Months with the lowest visibility are February, May, June, July, August and September (5mi).

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