Monthly weather forecast and climate
Stonington, CT

The classy and nice riverside homes by the Mystic River in Stonington, Connecticut
The classy and nice riverside homes by the Mystic River in Stonington, Connecticut

Weather in January

January, the same as December, is another cold winter month in Stonington, Connecticut, with average temperature varying between 36.5°F (2.5°C) and 26.6°F (-3°C). With an average high-temperature of 36.5°F (2.5°C) and an average low-temperature of 26.6°F (-3°C), January is the coldest month. Weather in January »

Weather in February

The last month of the winter, February, is also a wintry month in Stonington, Connecticut, with average temperature ranging between min 27.3°F (-2.6°C) and max 38.1°F (3.4°C). In February, the average high-temperature is almost the same as in January - a still wintry 38.1°F (3.4°C). Weather in February »

Weather in March

The first month of the spring, March, is a frosty month in Stonington, Connecticut, with temperature in the range of an average low of 33.4°F (0.8°C) and an average high of 43.3°F (6.3°C). In Stonington, the average high-temperature is relatively the same as in February - a chilly 43.3°F (6.3°C). Weather in March »

Weather in April

April in Stonington, Connecticut, is a cool spring month, with average temperature varying between 52.5°F (11.4°C) and 42.4°F (5.8°C). In April, the average high-temperature rises, from a chilly 43.3°F (6.3°C) in March, to a fresh 52.5°F (11.4°C). Weather in April »

Weather in May

The last month of the spring, May, is an enjoyable month in Stonington, Connecticut, with average temperature fluctuating between 62.6°F (17°C) and 50.7°F (10.4°C). In Stonington, the average high-temperature in May increases, from a fresh 52.5°F (11.4°C) in April, to an enjoyable 62.6°F (17°C). Weather in May »

Weather in June

The first month of the summer, June, is a pleasant month in Stonington, Connecticut, with average temperature varying between 70.9°F (21.6°C) and 59.4°F (15.2°C). In Stonington, Connecticut, the average high-temperature marginally rises, from an enjoyable 62.6°F (17°C) in May, to a pleasant 70.9°F (21.6°C). Weather in June »

Weather in July

July is a moderately hot summer month in Stonington, Connecticut, with temperature in the range of an average low of 66.9°F (19.4°C) and an average high of 77.9°F (25.5°C). With an average high-temperature of 77.9°F (25.5°C) and an average low-temperature of 66.9°F (19.4°C), July is the warmest month. Weather in July »

Weather in August

The last month of the summer, August, is another warm month in Stonington, Connecticut, with average temperature varying between 77.7°F (25.4°C) and 66.4°F (19.1°C). In Stonington, Connecticut, the average high-temperature is practically the same as in July - a still moderately hot 77.7°F (25.4°C). Weather in August »

Weather in September

September, the first month of the autumn, in Stonington, is also an agreeable month, with temperature in the range of an average low of 59.9°F (15.5°C) and an average high of 71.4°F (21.9°C). In September, the average high-temperature slightly decreases, from a warm 77.7°F (25.4°C) in August, to an agreeable 71.4°F (21.9°C). Weather in September »

Weather in October

October, the same as September, is another enjoyable autumn month in Stonington, Connecticut, with average temperature ranging between min 51.6°F (10.9°C) and max 61.7°F (16.5°C). In Stonington, the average high-temperature in October drops, from a pleasant 71.4°F (21.9°C) in September, to a comfortable 61.7°F (16.5°C). Weather in October »

Weather in November

November, the last month of the autumn, in Stonington, is another cool month, with temperature in the range of an average high of 51.3°F (10.7°C) and an average low of 41.2°F (5.1°C). In Stonington, Connecticut, the average high-temperature in November drops, from a comfortable 61.7°F (16.5°C) in October, to a cool 51.3°F (10.7°C). Weather in November »

Weather in December

The first month of the winter, December, is still a cold month in Stonington, Connecticut, with average temperature fluctuating between 33.4°F (0.8°C) and 42.3°F (5.7°C). In December, the average high-temperature marginally drops, from a fresh 51.3°F (10.7°C) in November, to a wintry 42.3°F (5.7°C). Weather in December »
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FAQ

What is the coldest month in Stonington?

January is the coldest month in Stonington, Connecticut, with an average high-temperature of 36.5°F (2.5°C) and an average low-temperature of 26.6°F (-3°C).

What is the least humid month in Stonington?

Months with the lowest humidity in Stonington are January, March, April and November, with an average relative humidity of 74%.

How much does it rain in Stonington?

Throughout the year, there are 166.1 rainfall days, and 34.09" (866mm) of precipitation is accumulated.

When does it snow in Stonington?

Months with snowfall are January through April, October through December.

How many days does it snow in Stonington?

Throughout the year, there are 24.7 snowfall days, and 7.87" (200mm) of snow is accumulated.

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

Months with the lowest UV index are January through March and December, with an average maximum UV index of 2.

What is the month with the least sunshine in Stonington?

February and December, with an average of 4.9h of sunshine, are months with the least sunshine.

What is the snowiest month in Stonington?

The month with the most snowfall in Stonington is March when snow falls for 5.3 days and typically aggregates up to 2.44" (62mm) of snow.

When it does not snow in Stonington?

In Stonington, Connecticut, snow does not fall in May through September.

What is the most humid month in Stonington?

With an average relative humidity of 81%, June is the most humid month in Stonington.

When are the longest days in Stonington?

With an average of 15.1h of daylight, June has the longest days of the year.

When is the highest UV index in Stonington?

Months with the highest UV index in Stonington are June through August, with an average maximum UV index of 6.

What is the warmest month in Stonington?

July is the warmest month in Stonington, with an average high-temperature of 77.9°F (25.5°C) and an average low-temperature of 66.9°F (19.4°C).

What month has the most sunshine in Stonington?

The month with the most sunshine is August, with an average of 10.6h of sunshine.

What is the driest month in Stonington?

September is the month with the least rainfall in Stonington, Connecticut. Rain falls for 12.8 days and accumulates 1.73" (44mm) of precipitation.

What is the wettest month in Stonington?

December is the month with the most rainfall. Rain falls for 13.4 days and accumulates 3.86" (98mm) of precipitation.

What is the month with the shortest days in Stonington?

The month with the shortest days in Stonington, Connecticut, is December, with an average of 9.2h of daylight.

Average temperature
Stonington, CT

Average temperature - Stonington, CT

The warmest month (with the highest average high temperature) is July (77.9°F).
The month with the lowest average high temperature is January (36.5°F).

The month with the highest average low temperature is July (66.9°F).
The coldest month (with the lowest average low temperature) is January (26.6°F).

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Average pressure
Stonington, CT

Average pressure - Stonington, CT

The month with the highest atmospheric pressure is November (30.08").
The month with the lowest atmospheric pressure is June (29.93").

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Average wind speed
Stonington, CT

Average wind speed - Stonington, CT

The windiest month (with the highest average wind speed) is January (12.4mph).
The calmest month (with the lowest average wind speed) is August (8.1mph).

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Average humidity
Stonington, CT

Average humidity - Stonington, CT

The month with the highest relative humidity is June (81%).
Months with the lowest relative humidity are January, March, April and November (74%).

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Average rainfall
Stonington, CT

Average rainfall - Stonington, CT

The wettest month (with the highest rainfall) is December (3.86").
The driest month (with the least rainfall) is September (1.73").

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Average rainfall days
Stonington, CT

Average rainfall days - Stonington, CT

The month with the highest number of rainy days is July (17.1 days).
The month with the least rainy days is February (10.1 days).

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Average snowfall
Stonington, CT

Average snowfall - Stonington, CT

The month with the highest snowfall is March (2.44").
Months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days
Stonington, CT

Average snowfall days - Stonington, CT

The month with the highest number of snowfall days is January (6.8 days).
Months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight / Average sunshine
Stonington, CT

Average daylight / Average sunshine - Stonington, CT

The month with the longest days is June (Average daylight: 15.1h).
The month with the shortest days is December (Average daylight: 9.2h).

The month with the most sunshine is August (Average sunshine: 10.6h).
Months with the least sunshine are February and December (Average sunshine: 4.9).

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Average sunshine days
Stonington, CT

Average sunshine days - Stonington, CT

The month with the most sunshine days is November (16.5 days).
Months with the least sunshine days are June and July (11.7 days).

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Average UV index
Stonington, CT

Average UV index - Stonington, 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 and December (UV index 2).

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Average visibility
Stonington, CT

Average visibility - Stonington, CT

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

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