Climate and monthly weather forecast
Glastonbury, CT

Weather in January

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

The last month of the winter, February, is also a wintry month in Glastonbury, Connecticut, with an average temperature fluctuating between 36.1°F (2.3°C) and 21.6°F (-5.8°C). In Glastonbury, Connecticut, the average high-temperature in February 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 an average temperature fluctuating between 29.5°F (-1.4°C) and 44.2°F (6.8°C). In Glastonbury, the average high-temperature in March 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 »

Weather in April

April is a mild spring month in Glastonbury, Connecticut, with temperature in the range of an average high of 56.7°F (13.7°C) and an average low of 39.9°F (4.4°C). In Glastonbury, the average high-temperature in April increases from a frosty 44.2°F (6.8°C) in March to a mild 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 49.5°F (9.7°C) and 68.5°F (20.3°C). In Glastonbury, the average high-temperature in May rises from a mild 56.7°F (13.7°C) in April to an agreeable 68.5°F (20.3°C). Weather in May »

Weather in June

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

Weather in July

July, the same as June, is a moderately hot summer month in Glastonbury, Connecticut, 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. In July, the average heat index is estimated at a tropical 89.8°F (32.1°C). Weather in July »

Weather in August

August, the last month of the summer in Glastonbury, is another warm month, with an average temperature ranging between max 81°F (27.2°C) and min 62.2°F (16.8°C). In August, the average high-temperature is relatively 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 temperature in the range of an average high of 73.4°F (23°C) and an average low of 55.6°F (13.1°C). In September, the average high-temperature slightly decreases 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 high of 61.2°F (16.2°C) and an average low of 46.9°F (8.3°C). In October, the average high-temperature drops from a moderately hot 73.4°F (23°C) in September to an enjoyable 61.2°F (16.2°C). Weather in October »

Weather in November

The last month of the autumn, November, is also a frosty month in Glastonbury, Connecticut, with an average temperature varying between 48.9°F (9.4°C) and 36°F (2.2°C). In Glastonbury, Connecticut, 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 »

Weather in December

The first month of the winter, December, is also a wintry month in Glastonbury, Connecticut, with temperature in the range of an average low of 28.4°F (-2°C) and an average high of 39°F (3.9°C). In December, the average high-temperature decreases 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.

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?

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

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?

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

When does it snow the most in Glastonbury?

The month with the most snowfall 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?

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

When is Daylight Saving Time (DST) in Glastonbury?

On Sunday, March 13. 2022, at 2:00 am, Daylight Saving Time starts, 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?

With an average relative humidity of 70%, April is the least humid month in Glastonbury.

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 in Glastonbury, Connecticut, with an average of 15h and 9min of daylight.

When is the highest UV index in Glastonbury?

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

What is the warmest month in Glastonbury?

July 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).

What are the months with the most sunshine in Glastonbury?

The months with the most sunshine in Glastonbury 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?

December is the month with the most rainfall in Glastonbury. Rain falls for 11.3 days and accumulates 3.19" (81mm) of precipitation.

What is the month with the shortest days in Glastonbury?

The month with the shortest days in Glastonbury, Connecticut, is December, with an average of 9h and 13min of daylight.

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.

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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