Monthly weather forecast and climate
Colchester, CT

Weather in January

January, like December, in Colchester, Connecticut, is a wintry winter month, with temperature in the range of an average low of 22.8°F (-5.1°C) and an average high of 34.3°F (1.3°C). The coldest month is January, with an average high-temperature of 34.3°F (1.3°C) and an average low-temperature of 22.8°F (-5.1°C). Weather in January »

Weather in February

February, the last month of the winter, in Colchester, is also a wintry month, with temperature in the range of an average low of 23.4°F (-4.8°C) and an average high of 37°F (2.8°C). In Colchester, the average high-temperature in February is practically the same as in January - a still wintry 37°F (2.8°C). Weather in February »

Weather in March

The first month of the spring, March, is a chilly month in Colchester, Connecticut, with temperature in the range of an average low of 30.4°F (-0.9°C) and an average high of 44.4°F (6.9°C). In Colchester, the average high-temperature slightly increases, from a cold 37°F (2.8°C) in February, to a frosty 44.4°F (6.9°C). Weather in March »

Weather in April

April is a moderate spring month in Colchester, Connecticut, with average temperature varying between 40.3°F (4.6°C) and 56.5°F (13.6°C). In April, the average high-temperature rises, from a chilly 44.4°F (6.9°C) in March, to a moderate 56.5°F (13.6°C). Weather in April »

Weather in May

The last month of the spring, May, is a comfortable month in Colchester, Connecticut, with temperature in the range of an average high of 67.6°F (19.8°C) and an average low of 49.6°F (9.8°C). In May, the average high-temperature rises, from a mild 56.5°F (13.6°C) in April, to a comfortable 67.6°F (19.8°C). Weather in May »

Weather in June

The first month of the summer, June, is a moderately hot month in Colchester, Connecticut, with average temperature varying between 57.4°F (14.1°C) and 75.7°F (24.3°C). In June, the average high-temperature marginally rises, from a comfortable 67.6°F (19.8°C) in May, to a moderately hot 75.7°F (24.3°C). Weather in June »

Weather in July

July, the same as June, is another warm summer month in Colchester, Connecticut, with temperature in the range of an average low of 64°F (17.8°C) and an average high of 82.2°F (27.9°C). The warmest month is July, with an average high-temperature of 82.2°F (27.9°C) and an average low-temperature of 64°F (17.8°C). The average heat index in July is appraised at a hot 88.5°F (31.4°C). Weather in July »

Weather in August

August, the last month of the summer, in Colchester, is also a moderately hot month, with average temperature varying between 80.2°F (26.8°C) and 63°F (17.2°C). In August, the average high-temperature is practically the same as in July - a still moderately hot 80.2°F (26.8°C). Weather in August »

Weather in September

September, the first month of the autumn, in Colchester, is still a warm month, with average temperature ranging between min 56.7°F (13.7°C) and max 73.4°F (23°C). In September, the average high-temperature marginally drops, from a moderately hot 80.2°F (26.8°C) in August, to a still warm 73.4°F (23°C). Weather in September »

Weather in October

October, the same as September, is another enjoyable autumn month in Colchester, Connecticut, with average temperature varying between 47.7°F (8.7°C) and 61.5°F (16.4°C). In October, the average high-temperature drops, from a warm 73.4°F (23°C) in September, to a comfortable 61.5°F (16.4°C). Weather in October »

Weather in November

November, the last month of the autumn, in Colchester, is another chilly month, with average temperature fluctuating between 49.6°F (9.8°C) and 36.9°F (2.7°C). In Colchester, Connecticut, the average high-temperature in November decreases, from a comfortable 61.5°F (16.4°C) in October, to a chilly 49.6°F (9.8°C). Weather in November »

Weather in December

December, the first month of the winter, in Colchester, is still a cold month, with temperature in the range of an average low of 29.7°F (-1.3°C) and an average high of 40.3°F (4.6°C). In December, the average high-temperature drops, from a chilly 49.6°F (9.8°C) in November, to a cold 40.3°F (4.6°C). Weather in December »
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FAQ

What is the coldest month in Colchester?

With an average high-temperature of 34.3°F (1.3°C) and an average low-temperature of 22.8°F (-5.1°C), January is the coldest month in Colchester, Connecticut.

How many days does it rain in Colchester?

In Colchester, Connecticut, during the entire year, the rain falls for 99.9 days and collects up to 9.41" (239mm) of precipitation.

When does it snow in Colchester?

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

How many days does it snow in Colchester?

In Colchester, Connecticut, during the entire year, snow falls for 22.3 days, and aggregates up to 3.82" (97mm) of snow.

What is the most humid month in Colchester?

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

What is the month with the least sunshine in Colchester?

Months with the least sunshine in Colchester, Connecticut, are February and December, with an average of 4.6h of sunshine.

When does it snow the most in Colchester?

March is the month with the most snowfall. Snow falls for 5.3 days and accumulates 1.26" (32mm) of snow.

What is the least humid month in Colchester?

With an average relative humidity of 71%, April is the least humid month.

When it does not snow in Colchester?

June through October are months without snowfall.

When are the longest days in Colchester?

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

When is the highest UV index in Colchester?

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

What is the warmest month in Colchester?

The warmest month is July, with an average high-temperature of 82.2°F (27.9°C) and an average low-temperature of 64°F (17.8°C).

What month has the most sunshine in Colchester?

The month with the most sunshine in Colchester, Connecticut, is August, with an average of 10.3h of sunshine.

What is the driest month in Colchester?

September is the month with the least rainfall in Colchester, Connecticut. Rain falls for 7.5 days and accumulates 0.35" (9mm) of precipitation.

What is the rainiest month in Colchester?

The month with the most rainfall in Colchester, Connecticut, is December when the rain falls for 6.8 days and typically aggregates up to 1.02" (26mm) of precipitation.

What is the month with the shortest days in Colchester?

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

When is the lowest UV index in Colchester?

The month with the lowest UV index in Colchester, Connecticut, is December, with an average maximum UV index of 1.

Average temperature
Colchester, CT

Average temperature - Colchester, CT

The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (34.3°F).

The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (22.8°F).

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Average pressure
Colchester, CT

Average pressure - Colchester, 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
Colchester, CT

Average wind speed - Colchester, CT

The windiest months (with the highest average wind speed) are January and March (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).

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Average rainfall
Colchester, CT

Average rainfall - Colchester, CT

The wettest month (with the highest rainfall) is December (1.02").
The driest month (with the least rainfall) is September (0.35").

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Average rainfall days
Colchester, CT

Average rainfall days - Colchester, CT

The month with the highest number of rainy days is July (11.8 days).
The month with the least rainy days is January (5.1 days).

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Average snowfall
Colchester, CT

Average snowfall - Colchester, CT

The month with the highest snowfall is March (1.26").
Months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days
Colchester, CT

Average snowfall days - Colchester, CT

The month with the highest number of snowfall days is February (6.4 days).
Months with the least snowfall days are June, July, August, September and October (0 days).

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Average daylight / Average sunshine
Colchester, CT

Average daylight / Average sunshine - Colchester, 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).
Months with the least sunshine are February and December (Average sunshine: 4.6).

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Average sunshine days
Colchester, CT

Average sunshine days - Colchester, CT

The month with the most sunshine days is January (21.8 days).
The month with the least sunshine days is July (17.1 days).

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Average visibility
Colchester, CT

Average visibility - Colchester, CT

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

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