Glastonbury
Connecticut, USA
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Glastonbury, CT

January, like December, in Glastonbury, Connecticut, is another cold winter month, with average temperature fluctuating between 33.4°F (0.8°C) and 21.2°F (-6°C). The coldest month is January, with an average high-temperature of 33.4°F (0.8°C) and an average low-temperature of 21.2°F (-6°C). Weather in January »

February, the last month of the winter, in Glastonbury, is also a wintry month, with average temperature ranging between max 36.1°F (2.3°C) and min 21.6°F (-5.8°C). In Glastonbury, Connecticut, the average high-temperature is essentially the same as in January - a still wintry 36.1°F (2.3°C). Weather in February »

March, the first month of the spring, in Glastonbury, is a frosty month, with average temperature fluctuating between 44.2°F (6.8°C) and 29.5°F (-1.4°C). In March, the average high-temperature slightly increases, from a wintry 36.1°F (2.3°C) in February, to a frosty 44.2°F (6.8°C). Weather in March »

April is a mild spring month in Glastonbury, Connecticut, with average temperature ranging between max 56.7°F (13.7°C) and min 39.9°F (4.4°C). In Glastonbury, the average high-temperature in April increases, from a chilly 44.2°F (6.8°C) in March, to a moderate 56.7°F (13.7°C). Weather in April »

The last month of the spring, May, is an agreeable month in Glastonbury, Connecticut, with average temperature varying between 68.5°F (20.3°C) and 49.5°F (9.7°C). In May, the average high-temperature rises, from a mild 56.7°F (13.7°C) in April, to a pleasant 68.5°F (20.3°C). Weather in May »

The first month of the summer, June, is a warm month in Glastonbury, Connecticut, with average temperature fluctuating between 76.5°F (24.7°C) and 57°F (13.9°C). In Glastonbury, the average high-temperature slightly increases, from an agreeable 68.5°F (20.3°C) in May, to a warm 76.5°F (24.7°C). Weather in June »

July, like June, in Glastonbury, Connecticut, is another warm summer month, with average temperature ranging between max 83.1°F (28.4°C) and min 63.7°F (17.6°C). July is the warmest month, with an average high-temperature of 83.1°F (28.4°C) and an average low-temperature of 63.7°F (17.6°C). In July, the average heat index is evaluated at a hot 89.8°F (32.1°C). Weather in July »

The last month of the summer, August, is also a moderately hot month in Glastonbury, Connecticut, with average temperature ranging between min 62.2°F (16.8°C) and max 81°F (27.2°C). In August, the average high-temperature is almost the same as in July - a still warm 81°F (27.2°C). Weather in August »

The first month of the autumn, September, is also a moderately hot month in Glastonbury, Connecticut, with average temperature fluctuating between 73.4°F (23°C) and 55.6°F (13.1°C). In Glastonbury, the average high-temperature slightly decreases, from a moderately hot 81°F (27.2°C) in August, to a still warm 73.4°F (23°C). Weather in September »

October, like September, in Glastonbury, Connecticut, is another comfortable autumn month, with average temperature varying between 46.9°F (8.3°C) and 61.2°F (16.2°C). In October, the average high-temperature decreases, from a warm 73.4°F (23°C) in September, to an enjoyable 61.2°F (16.2°C). Weather in October »

November, the last month of the autumn, in Glastonbury, is another chilly month, with average temperature fluctuating between 36°F (2.2°C) and 48.9°F (9.4°C). In Glastonbury, the average high-temperature in November drops, from an enjoyable 61.2°F (16.2°C) in October, to a chilly 48.9°F (9.4°C). Weather in November »

December, the first month of the winter, in Glastonbury, is also a wintry month, with average temperature varying between 39°F (3.9°C) and 28.4°F (-2°C). In Glastonbury, the average high-temperature drops, from a chilly 48.9°F (9.4°C) in November, to a cold 39°F (3.9°C). Weather in December »

What is the coldest month in Glastonbury?

The coldest month is January, with an average high-temperature of 33.4°F (0.8°C) and an average low-temperature of 21.2°F (-6°C).

How many days does it rain in Glastonbury?

Throughout the year, in Glastonbury, there are 164.5 rainfall days, and 32.09" (815mm) of precipitation is accumulated.

When does it snow in Glastonbury?

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

How much does it snow in Glastonbury?

Throughout the year, there are 29.1 snowfall days, and 15.63" (397mm) of snow is accumulated.

What is the most humid month in Glastonbury?

February is the most humid month, with an average relative humidity of 79%.

When does it snow the most in Glastonbury?

February is the month with the most snowfall in Glastonbury, Connecticut. Snow falls for 8.1 days and accumulates 4.45" (113mm) of snow.

What is the month with the least sunshine in Glastonbury?

With an average of 4.6h of sunshine, February has the least sunshine of the year.

What is the least humid month in Glastonbury?

The least humid month is April, with an average relative humidity of 70%.

When it does not snow in Glastonbury?

In Glastonbury, Connecticut, snow does not fall in June through October.

When are the longest days in Glastonbury?

June has the longest days of the year in Glastonbury, Connecticut, with an average of 15.2h of daylight.

When is the highest UV index in Glastonbury?

Months with the highest UV index in Glastonbury are June and July, with an average maximum UV index of 6.

What is the warmest month in Glastonbury?

The warmest month in Glastonbury is July, with an average high-temperature of 83.1°F (28.4°C) and an average low-temperature of 63.7°F (17.6°C).

What are the months with the most sunshine in Glastonbury?

Months with the most sunshine are July and August, with an average of 10.4h of sunshine.

What is the driest month in Glastonbury?

The month with the least rainfall is September when the rain falls for 12.8 days and typically collects 1.93" (49mm) of precipitation.

What is the rainiest month in Glastonbury?

The month with the most rainfall is December when the rain falls for 11.3 days and typically aggregates up to 3.19" (81mm) of precipitation.

What is the month with the shortest days in Glastonbury?

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

When is the lowest UV index in Glastonbury?

December is the month with the lowest UV index, with an average maximum UV index of 1.
Average temperature - Glastonbury, CT
Average rainfall - Glastonbury, CT

The wettest month (with the highest rainfall) is December (3.19").
The driest month (with the lowest rainfall) is September (1.93").

Average rainfall days - Glastonbury, CT

The month with the highest number of rainy days is July (17.6 days).
The month with the lowest number of rainy days is January (9.2 days).

Average snowfall - Glastonbury, CT
Average snowfall days - Glastonbury, CT

The month with the highest number of snowfall days is February (8.1 days).
Months with the lowest number of snowfall days are June, July, August and September (0 days).

Average daylight / Average sunshine - Glastonbury, CT

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

Months with most sunshine are July and August (Average sunshine: 10.4h).
The month with least sunshine is February (Average sunshine: 4.6h).