Climate and monthly weather forecast
Glastonbury, CT

Weather in January

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

Weather in February

February, the last month of the winter in Glastonbury, is another cold month, with an average temperature varying between 36.1°F (2.3°C) and 21.6°F (-5.8°C). In February, the average high-temperature is essentially the same as in January - a still cold 36.1°F (2.3°C). Weather in February »

Weather in March

The first month of the spring, March, is a frosty month in Glastonbury, Connecticut, with temperature in the range of an average low of 29.5°F (-1.4°C) and an average high of 44.2°F (6.8°C). In Glastonbury, Connecticut, the average high-temperature in March marginally rises from a cold 36.1°F (2.3°C) in February to a chilly 44.2°F (6.8°C). Weather in March »

Weather in April

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

Weather in May

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

Weather in June

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

Weather in July

July, like June, in Glastonbury, Connecticut, is a moderately hot summer month, with an average temperature ranging between min 63.7°F (17.6°C) and max 83.1°F (28.4°C). With an average high-temperature of 83.1°F (28.4°C) and an average low-temperature of 63.7°F (17.6°C), July is the warmest month. The average heat index in July is computed to be a hot 89.6°F (32°C). Weather in July »

Weather in August

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

Weather in September

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

Weather in October

October, the same as September, is another comfortable autumn month in Glastonbury, Connecticut, with temperature in the range of an average low of 46.9°F (8.3°C) and an average high of 61.2°F (16.2°C). In October, the average high-temperature decreases from a moderately hot 73.4°F (23°C) in September to a comfortable 61.2°F (16.2°C). Weather in October »

Weather in November

The last month of the autumn, November, is another chilly month in Glastonbury, Connecticut, with temperature in the range of an average high of 48.9°F (9.4°C) and an average low of 36°F (2.2°C). In November, the average high-temperature decreases from a comfortable 61.2°F (16.2°C) in October to a frosty 48.9°F (9.4°C). Weather in November »

Weather in December

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

What is the coldest month in Glastonbury?

With an average high-temperature of 33.4°F (0.8°C) and an average low-temperature of 21.2°F (-6°C), January is the coldest month in Glastonbury.

How many days does it rain in Glastonbury?

In Glastonbury, Connecticut, during the entire year, the rain falls for 164.5 days and collects up to 32.09" (815mm) of precipitation.

When does it snow in Glastonbury?

Months with snowfall are January through May, November and December.

How much does it snow in Glastonbury?

In Glastonbury, during the entire year, snow falls for 29.1 days and aggregates up to 15.63" (397mm) of snow.

What is the most humid month in Glastonbury?

With an average relative humidity of 79%, February is the most humid month in Glastonbury.

What is the snowiest month in Glastonbury?

The month with the most snowfall in Glastonbury, Connecticut, is February, when snow falls for 8.1 days and typically aggregates up to 4.45" (113mm) of snow.

What is the month with the least sunshine in Glastonbury?

February has the least sunshine of the year in Glastonbury, Connecticut, with an average of 4.6h of sunshine.

When is Daylight Saving Time (DST) in Glastonbury?

On Sunday, March 13. 2022, at 2:00 am, Daylight Saving Time starts in Glastonbury, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 6. 2022, at 2:00 am, and the time zone reverts from EDT to EST.

What is the least humid month in Glastonbury?

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

When it does not snow in Glastonbury?

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

When are the longest days in Glastonbury?

June has the longest days of the year, with an average of 15h and 9min of daylight.

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

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

What is the warmest month in Glastonbury?

With an average high-temperature of 83.1°F (28.4°C) and an average low-temperature of 63.7°F (17.6°C), July is the warmest month.

What is the month with the most sunshine in Glastonbury?

The months with the most sunshine in Glastonbury, Connecticut, are July and August, with an average of 10.4h of sunshine.

What is the driest month in Glastonbury?

September is the month with the least rainfall in Glastonbury, Connecticut. Rain falls for 12.8 days and accumulates 1.93" (49mm) of precipitation.

What is the rainiest month in Glastonbury?

The month with the most rainfall in Glastonbury, Connecticut, 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?

With an average of 9h and 13min of daylight, December has the shortest days of the year in Glastonbury, Connecticut.

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

With an average maximum UV index of 1, December is the month with the lowest UV index in Glastonbury.

Average temperature
Glastonbury, CT

Average temperature - Glastonbury, CT

The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (33.4°F).

The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (21.2°F).

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Average pressure
Glastonbury, CT

Average pressure - Glastonbury, 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
Glastonbury, CT

Average wind speed - Glastonbury, CT

The windiest months (with the highest average wind speed) are January and March (8.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.3mph).

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Average rainfall
Glastonbury, CT

Average rainfall - Glastonbury, CT

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

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Average rainfall days
Glastonbury, CT

Average rainfall days - Glastonbury, CT

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

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Average snowfall
Glastonbury, CT

Average snowfall - Glastonbury, CT

The month with the highest snowfall is February (4.45").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days
Glastonbury, CT

Average snowfall days - Glastonbury, CT

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

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Average daylight / Average sunshine
Glastonbury, CT

Average daylight / Average sunshine - Glastonbury, CT

The month with the longest days is June (Average daylight: 15h and 9min).
The month with the shortest days is December (Average daylight: 9h and 13min).

The months with the most sunshine are July and August (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

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Average sunshine days
Glastonbury, CT

Average sunshine days - Glastonbury, CT

The month with the most sunshine days is January (17.6 days).
The month with the least sunshine days is June (10.7 days).

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Average visibility
Glastonbury, CT

Average visibility - Glastonbury, CT

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

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