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

Monthly weather forecast and climate
Bolton, CT

Grass, brown sand, and trees on an empty beach in Bolton, Connecticut, overlooking the blue waters far out on a cool and sunny day
Grass, brown sand, and trees on an empty beach in Bolton, Connecticut, overlooking the blue waters far out on a cool and sunny day
January, like December, in Bolton, Connecticut, is a wintry winter month, with average temperature fluctuating between 32.9°F (0.5°C) and 21.2°F (-6°C). January is the coldest month, with an average high-temperature of 32.9°F (0.5°C) and an average low-temperature of 21.2°F (-6°C). Weather in January »

The last month of the winter, February, is also a wintry month in Bolton, Connecticut, with average temperature fluctuating between 36°F (2.2°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°F (2.2°C). Weather in February »

The first month of the spring, March, is a frosty month in Bolton, Connecticut, with average temperature varying between 29.5°F (-1.4°C) and 44.2°F (6.8°C). In Bolton, Connecticut, the average high-temperature in March marginally rises, from a cold 36°F (2.2°C) in February, to a chilly 44.2°F (6.8°C). Weather in March »

April is a moderate spring month in Bolton, Connecticut, with average temperature fluctuating between 56.7°F (13.7°C) and 39.9°F (4.4°C). In April, the average high-temperature 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 a pleasant month in Bolton, Connecticut, with average temperature varying between 68.9°F (20.5°C) and 49.5°F (9.7°C). In May, the average high-temperature increases, from a mild 56.7°F (13.7°C) in April, to an agreeable 68.9°F (20.5°C). Weather in May »

June, the first month of the summer, in Bolton, is a moderately hot month, with average temperature fluctuating between 56.8°F (13.8°C) and 76.5°F (24.7°C). In June, the average high-temperature marginally rises, from a pleasant 68.9°F (20.5°C) in May, to a moderately hot 76.5°F (24.7°C). Weather in June »

July, the same as June, is a moderately hot summer month in Bolton, Connecticut, with temperature in the range of an average low of 63.5°F (17.5°C) and an average high of 83.1°F (28.4°C). With an average high-temperature of 83.1°F (28.4°C) and an average low-temperature of 63.5°F (17.5°C), July is the warmest month. In July, the average heat index is estimated at a hot 90.1°F (32.3°C). Weather in July »

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

September, the first month of the autumn, in Bolton, is still a warm month, with average temperature fluctuating between 55.2°F (12.9°C) and 73.4°F (23°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 »

October, like September, in Bolton, Connecticut, is another enjoyable autumn month, with temperature in the range of an average high of 61.2°F (16.2°C) and an average low of 46.6°F (8.1°C). In October, the average high-temperature drops, from a warm 73.4°F (23°C) in September, to a comfortable 61.2°F (16.2°C). Weather in October »

The last month of the autumn, November, is another chilly month in Bolton, Connecticut, with temperature in the range of an average high of 48.9°F (9.4°C) and an average low of 35.8°F (2.1°C). In Bolton, 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 »

The first month of the winter, December, is also a wintry month in Bolton, Connecticut, with average temperature varying between 28°F (-2.2°C) and 38.7°F (3.7°C). In December, the average high-temperature decreases, from a chilly 48.9°F (9.4°C) in November, to a cold 38.7°F (3.7°C). Weather in December »

What is the coldest month in Bolton?

January is the coldest month in Bolton, with an average high-temperature of 32.9°F (0.5°C) and an average low-temperature of 21.2°F (-6°C).

How many days does it rain in Bolton?

Throughout the year, there are 164.8 rainfall days, and 31.77" (807mm) of precipitation is accumulated.

When does it snow in Bolton?

January through May, October through December are months with snowfall in Bolton.

How much does it snow in Bolton?

In Bolton, during the entire year, snow falls for 31.6 days, and aggregates up to 17.13" (435mm) of snow.

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

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Bolton.

What is the most humid month in Bolton?

February is the most humid month in Bolton, with an average relative humidity of 80%.

What is the snowiest month in Bolton?

The month with the most snowfall is February when snow falls for 8.5 days and typically aggregates up to 4.8" (122mm) of snow.

What is the month with the least sunshine in Bolton?

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

What is the least humid month in Bolton?

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

When it does not snow in Bolton?

In Bolton, Connecticut, snow does not fall in June through September.

When are the longest days in Bolton?

The month with the longest days is June, with an average of 15.2h of daylight.

What is the month with the highest UV index in Bolton?

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

What is the warmest month in Bolton?

With an average high-temperature of 83.1°F (28.4°C) and an average low-temperature of 63.5°F (17.5°C), July is the warmest month in Bolton.

What are the months with the most sunshine in Bolton?

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

What is the driest month in Bolton?

September is the month with the least rainfall in Bolton. Rain falls for 12.5 days and accumulates 1.77" (45mm) of precipitation.

What is the rainiest month in Bolton?

December is the month with the most rainfall in Bolton. Rain falls for 11.8 days and accumulates 3.27" (83mm) of precipitation.

What is the month with the shortest days in Bolton?

December has the shortest days of the year, with an average of 9.2h of daylight.
Average temperature - Bolton, CT
Average rainfall - Bolton, CT

The wettest month (with the highest rainfall) is December (3.27").
The driest month (with the lowest rainfall) is September (1.77").

Average rainfall days - Bolton, CT

The month with the highest number of rainy days is July (17.3 days).
The month with the lowest number of rainy days is January (10 days).

Average snowfall - Bolton, CT
Average snowfall days - Bolton, CT

The month with the highest number of snowfall days is February (8.5 days).
Months with the lowest number of snowfall days are June, July, August and September (0 days).

Average daylight / Average sunshine - Bolton, 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).

Average UV index - Bolton, CT