Climate and monthly weather forecast
Colchester, CT

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Weather in January

January, the same as December, is a wintry winter month in Colchester, Connecticut, with an average temperature varying between 22.8°F (-5.1°C) and 34.3°F (1.3°C). Colchester, Connecticut, witnesses the coldest weather in January, with temperatures averaging a high of 34.3°F (1.3°C) and a low of 22.8°F (-5.1°C). Weather in January »

Weather in February

The last month of the winter, February, is also a wintry month in Colchester, Connecticut, with an average temperature fluctuating between 37°F (2.8°C) and 23.4°F (-4.8°C). The commencement of February records an average high-temperature of a still cold 37°F (2.8°C), barely varying from January's 34.3°F (1.3°C). Weather in February »

Weather in March

The first month of the spring, March, is a frosty month in Colchester, Connecticut, with an average temperature varying between 44.4°F (6.9°C) and 30.4°F (-0.9°C). Colchester experiences a minor temperature shift with the start of March, with average high-temperatures moving from an icy 37°F (2.8°C) in February to a frosty 44.4°F (6.9°C). Weather in March »

Weather in April

April in Colchester, Connecticut, is a refreshing spring month, with an average temperature ranging between max 56.5°F (13.6°C) and min 40.3°F (4.6°C). The start of April brings a rise in the average high-temperature, moving from a chilly 44.4°F (6.9°C) in March to a refreshing 56.5°F (13.6°C). Weather in April »

Weather in May

May, the last month of the spring in Colchester, is a refreshing month, with an average temperature ranging between min 49.6°F (9.8°C) and max 67.6°F (19.8°C). The average high-temperature increases in May, moving from a moderate 56.5°F (13.6°C) in April to a comfortable 67.6°F (19.8°C). Weather in May »

Weather in June

June, the first month of the summer in Colchester, is a warm month, with an average temperature ranging between max 75.7°F (24.3°C) and min 57.4°F (14.1°C). As Colchester transitions into June, the average high-temperature is observed to slightly rise 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 a moderately hot summer month in Colchester, Connecticut, with an average temperature fluctuating between 64°F (17.8°C) and 82.2°F (27.9°C). July proves to be the warmest month, recording an average peak temperature of 82.2°F (27.9°C) and a minimum temperature of 64°F (17.8°C). In July, the average heat index is estimated at a hot 87.8°F (31°C). Weather in July »

Weather in August

August, the last month of the summer in Colchester, is another warm month, with an average temperature ranging between max 80.2°F (26.8°C) and min 63°F (17.2°C). Transitioning into August, Colchester experiences an average high-temperature of a still moderately hot 80.2°F (26.8°C), marking a minor shift from the preceding month. Weather in August »

Weather in September

September, the first month of the autumn in Colchester, is also a moderately hot month, with an average temperature ranging between min 56.7°F (13.7°C) and max 73.4°F (23°C). Start of September brings a slight shift in the average high-temperature, dipping a bit from August's 80.2°F (26.8°C) to a still warm 73.4°F (23°C). Weather in September »

Weather in October

October, like September, in Colchester, Connecticut, is another comfortable autumn month, with an average temperature ranging between max 61.5°F (16.4°C) and min 47.7°F (8.7°C). The onset of October introduces a moderate change in Colchester's weather, with average high-temperatures falling from September's warm 73.4°F (23°C) to a refreshing 61.5°F (16.4°C). Weather in October »

Weather in November

November, the last month of the autumn in Colchester, is also a frosty month, with an average temperature varying between 36.9°F (2.7°C) and 49.6°F (9.8°C). The start of November comes with a reduction in the average high-temperature, receding from a refreshing 61.5°F (16.4°C) in October to a frosty 49.6°F (9.8°C). Weather in November »

Weather in December

The first month of the winter, December, is also a wintry month in Colchester, Connecticut, with temperature in the range of an average high of 40.3°F (4.6°C) and an average low of 29.7°F (-1.3°C). As December arrives, Colchester's weather displays a decrease in high-temperatures, transitioning from November's chilly 49.6°F (9.8°C) to a cold 40.3°F (4.6°C). Weather in December »
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Frequently asked questions

What month is the coldest in Colchester?

The coldest time of the year is January, with temperatures averaging a high of 34.3°F (1.3°C) and a low of 22.8°F (-5.1°C).

How much does it rain in Colchester?

Throughout the year, in Colchester, Connecticut, there are 99.9 rainfall days, and 9.41" (239mm) of precipitation is accumulated.

When does it snow in Colchester?

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

How many days does it snow in Colchester?

Throughout the year, in Colchester, there are 22.3 snowfall days, and 3.82" (97mm) of snow is accumulated.

What is the most humid month in Colchester?

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

What are the months with the least sunshine in Colchester?

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

When does it snow the most in Colchester?

The month with the most snowfall is March, when snow falls for 5.3 days and typically aggregates up to 1.26" (32mm) of snow.

When is Daylight Saving Time (DST) in Colchester?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.

What is the least humid month in Colchester?

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

When it does not snow in Colchester?

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

When are the longest days in Colchester?

The month with the longest days is June, with an average of 15h and 6min of daylight.

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

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

What time of the year is the hottest in Colchester?

July, marked by an average high-temperature of 82.2°F (27.9°C) and a low-temperature of 64°F (17.8°C), is the warmest month in Colchester, Connecticut.

What month has the most sunshine in Colchester?

August has the most sunshine of the year in Colchester, 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. Rain falls for 7.5 days and accumulates 0.35" (9mm) of precipitation.

What is the wettest 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?

December has the shortest days of the year in Colchester, Connecticut, with an average of 9h and 12min of daylight.

When is the lowest UV index in Colchester?

December is the month with the lowest UV index in Colchester, 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"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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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").
The 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).
The 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: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).

The month with the most sunshine is August (Average sunshine: 10h and 18min).
The months with the least sunshine are February and December (Average sunshine: 4h and 36min).

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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

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

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Colchester, Connecticut, USA

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