Monthly weather forecast and climate
South Windham, CT

Weather in January

January, the same as December, is a wintry winter month in South Windham, Connecticut, with temperature in the range of an average high of 33.4°F (0.8°C) and an average low of 21.6°F (-5.8°C). The coldest month is January, with an average high-temperature of 33.4°F (0.8°C) and an average low-temperature of 21.6°F (-5.8°C). Weather in January »

Weather in February

February, the last month of the winter, in South Windham, is also a wintry month, with average temperature varying between 36.7°F (2.6°C) and 22.5°F (-5.3°C). In February, the average high-temperature is practically the same as in January - a still cold 36.7°F (2.6°C). Weather in February »

Weather in March

The first month of the spring, March, is a chilly month in South Windham, Connecticut, with temperature in the range of an average high of 43.7°F (6.5°C) and an average low of 29.7°F (-1.3°C). In March, the average high-temperature slightly increases, from a wintry 36.7°F (2.6°C) in February, to a frosty 43.7°F (6.5°C). Weather in March »

Weather in April

April is a moderate spring month in South Windham, Connecticut, with average temperature ranging between max 55.9°F (13.3°C) and min 39.6°F (4.2°C). In South Windham, the average high-temperature in April rises, from a chilly 43.7°F (6.5°C) in March, to a moderate 55.9°F (13.3°C). Weather in April »

Weather in May

May, the last month of the spring, in South Windham, is an enjoyable month, with average temperature varying between 48.9°F (9.4°C) and 67.1°F (19.5°C). In South Windham, the average high-temperature rises, from a moderate 55.9°F (13.3°C) in April, to a comfortable 67.1°F (19.5°C). Weather in May »

Weather in June

The first month of the summer, June, is a warm month in South Windham, Connecticut, with average temperature varying between 74.8°F (23.8°C) and 56.3°F (13.5°C). In South Windham, Connecticut, the average high-temperature slightly increases, from a comfortable 67.1°F (19.5°C) in May, to a warm 74.8°F (23.8°C). Weather in June »

Weather in July

July, like June, in South Windham, Connecticut, is a moderately hot summer month, with temperature in the range of an average high of 81.9°F (27.7°C) and an average low of 63°F (17.2°C). July is the warmest month, with an average high-temperature of 81.9°F (27.7°C) and an average low-temperature of 63°F (17.2°C). The average heat index is calculated to a hot 88°F (31.1°C). Weather in July »

Weather in August

The last month of the summer, August, is also a moderately hot month in South Windham, Connecticut, with average temperature varying between 80.2°F (26.8°C) and 62.2°F (16.8°C). In August, the average high-temperature is almost the same as in July - a still warm 80.2°F (26.8°C). Weather in August »

Weather in September

The first month of the autumn, September, is also an agreeable month in South Windham, Connecticut, with average temperature ranging between min 55.4°F (13°C) and max 73.2°F (22.9°C). In September, the average high-temperature marginally drops, from a moderately hot 80.2°F (26.8°C) in August, to a pleasant 73.2°F (22.9°C). Weather in September »

Weather in October

October, like September, in South Windham, Connecticut, is another enjoyable autumn month, with average temperature varying between 46.4°F (8°C) and 61°F (16.1°C). In October, the average high-temperature drops, 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 also a frosty month in South Windham, Connecticut, with temperature in the range of an average low of 36.1°F (2.3°C) and an average high of 49.1°F (9.5°C). In South Windham, the average high-temperature decreases, from a comfortable 61°F (16.1°C) in October, to a frosty 49.1°F (9.5°C). Weather in November »

Weather in December

December, the first month of the winter, in South Windham, is also a wintry month, with average temperature varying between 28.6°F (-1.9°C) and 39.4°F (4.1°C). In December, the average high-temperature decreases, from a chilly 49.1°F (9.5°C) in November, to a wintry 39.4°F (4.1°C). Weather in December »
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FAQ

What is the coldest month in South Windham?

With an average high-temperature of 33.4°F (0.8°C) and an average low-temperature of 21.6°F (-5.8°C), January is the coldest month in South Windham.

How many days does it rain in South Windham?

Throughout the year, in South Windham, Connecticut, there are 164.2 rainfall days, and 33.74" (857mm) of precipitation is accumulated.

When does it snow in South Windham?

January through May, November and December are months with snowfall in South Windham.

How much does it snow in South Windham?

Throughout the year, in South Windham, Connecticut, there are 31.6 snowfall days, and 15.98" (406mm) of snow is accumulated.

When is the lowest UV index in South Windham?

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in South Windham, Connecticut.

What are the most humid months in South Windham?

Months with the highest humidity in South Windham, Connecticut, are February and October, with an average relative humidity of 79%.

When does it snow the most in South Windham?

The month with the most snowfall in South Windham is March when snow falls for 7.3 days and typically aggregates up to 4.41" (112mm) of snow.

What is the least humid month in South Windham?

April is the least humid month, with an average relative humidity of 72%.

When it does not snow in South Windham?

June through October are months without snowfall.

When are the longest days in South Windham?

With an average of 15.2h of daylight, June has the longest days of the year.

What are the months with the highest UV index in South Windham?

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

What is the warmest month in South Windham?

With an average high-temperature of 81.9°F (27.7°C) and an average low-temperature of 63°F (17.2°C), July is the warmest month.

What month has the most sunshine in South Windham?

With an average of 10.3h of sunshine, August has the most sunshine of the year.

What is the driest month in South Windham?

September is the month with the least rainfall in South Windham. Rain falls for 13.5 days and accumulates 1.73" (44mm) of precipitation.

What is the rainiest month in South Windham?

The month with the most rainfall in South Windham is December when the rain falls for 11.5 days and typically aggregates up to 3.46" (88mm) of precipitation.

What is the month with the shortest days in South Windham?

December has the shortest days of the year in South Windham, Connecticut, with an average of 9.2h of daylight.

What is the month with the least sunshine in South Windham?

December has the least sunshine of the year in South Windham, Connecticut, with an average of 4.7h of sunshine.

Average temperature
South Windham, CT

Average temperature - South Windham, CT

The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (33.4°F).

The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).

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Average pressure
South Windham, CT

Average pressure - South Windham, 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
South Windham, CT

Average wind speed - South Windham, CT

The windiest months (with the highest average wind speed) are January and March (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).

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Average humidity
South Windham, CT

Average humidity - South Windham, CT

Months with the highest relative humidity are February and October (79%).
The month with the lowest relative humidity is April (72%).

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Average rainfall
South Windham, CT

Average rainfall - South Windham, CT

The wettest month (with the highest rainfall) is December (3.46").
The driest month (with the least rainfall) is September (1.73").

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Average rainfall days
South Windham, CT

Average rainfall days - South Windham, CT

The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is January (9.1 days).

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Average snowfall
South Windham, CT

Average snowfall - South Windham, CT

The month with the highest snowfall is March (4.41").
Months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days
South Windham, CT

Average snowfall days - South Windham, CT

The month with the highest number of snowfall days is January (8.3 days).
Months with the least snowfall days are June, July, August, September and October (0 days).

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Average daylight / Average sunshine
South Windham, CT

Average daylight / Average sunshine - South Windham, 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).

The month with the most sunshine is August (Average sunshine: 10.3h).
The month with the least sunshine is December (Average sunshine: 4.7h).

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Average sunshine days
South Windham, CT

Average sunshine days - South Windham, CT

The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is June (10.8 days).

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Average UV index
South Windham, CT

Average UV index - South Windham, 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
South Windham, CT

Average visibility - South Windham, 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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