Climate and monthly weather forecast
Southbury, CT

Weather in January

January, like December, in Southbury, Connecticut, is a wintry winter month, with an average temperature fluctuating between 33.1°F (0.6°C) and 21.4°F (-5.9°C). January is the coldest month, with an average high-temperature of 33.1°F (0.6°C) and an average low-temperature of 21.4°F (-5.9°C). Weather in January »

Weather in February

February, the last month of the winter in Southbury, is also a wintry month, with an average temperature varying between 21.9°F (-5.6°C) and 36.1°F (2.3°C). In Southbury, the average high-temperature in February is practically 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 Southbury, Connecticut, with an average temperature fluctuating between 43.9°F (6.6°C) and 29.1°F (-1.6°C). In Southbury, Connecticut, the average high-temperature in March marginally rises from a cold 36.1°F (2.3°C) in February to a frosty 43.9°F (6.6°C). Weather in March »

Weather in April

April in Southbury, Connecticut, is a moderate spring month, with an average temperature varying between 56.8°F (13.8°C) and 39.7°F (4.3°C). In April, the average high-temperature rises from a chilly 43.9°F (6.6°C) in March to a mild 56.8°F (13.8°C). Weather in April »

Weather in May

The last month of the spring, May, is an agreeable month in Southbury, Connecticut, with an average temperature ranging between max 68.4°F (20.2°C) and min 48.9°F (9.4°C). In May, the average high-temperature rises from a moderate 56.8°F (13.8°C) in April to an agreeable 68.4°F (20.2°C). Weather in May »

Weather in June

June, the first month of the summer in Southbury, is a warm month, with temperature in the range of an average high of 76.3°F (24.6°C) and an average low of 56.8°F (13.8°C). In June, the average high-temperature marginally rises from an agreeable 68.4°F (20.2°C) in May to a moderately hot 76.3°F (24.6°C). Weather in June »

Weather in July

July, the same as June, is a moderately hot summer month in Southbury, Connecticut, with an average temperature varying between 63.1°F (17.3°C) and 82.4°F (28°C). July is the warmest month, with an average high-temperature of 82.4°F (28°C) and an average low-temperature of 63.1°F (17.3°C). The average heat index in July is calculated to be a tropical 89.6°F (32°C). Weather in July »

Weather in August

The last month of the summer, August, is also a moderately hot month in Southbury, Connecticut, with an average temperature varying between 61.3°F (16.3°C) and 80.4°F (26.9°C). In Southbury, the average high-temperature in August is almost the same as in July - a still moderately hot 80.4°F (26.9°C). Weather in August »

Weather in September

The first month of the autumn, September, is also an agreeable month in Southbury, Connecticut, with an average temperature fluctuating between 73.2°F (22.9°C) and 55.2°F (12.9°C). In September, the average high-temperature marginally drops from a moderately hot 80.4°F (26.9°C) in August to an agreeable 73.2°F (22.9°C). Weather in September »

Weather in October

October, the same as September, is another enjoyable autumn month in Southbury, Connecticut, with an average temperature ranging between max 61°F (16.1°C) and min 46°F (7.8°C). In October, the average high-temperature drops from a pleasant 73.2°F (22.9°C) in September to a comfortable 61°F (16.1°C). Weather in October »

Weather in November

November, the last month of the autumn in Southbury, is another chilly month, with an average temperature varying between 35.2°F (1.8°C) and 48.4°F (9.1°C). In Southbury, Connecticut, the average high-temperature in November decreases from an enjoyable 61°F (16.1°C) in October to a chilly 48.4°F (9.1°C). Weather in November »

Weather in December

The first month of the winter, December, is also a wintry month in Southbury, Connecticut, with an average temperature varying between 38.5°F (3.6°C) and 28°F (-2.2°C). In December, the average high-temperature decreases from a frosty 48.4°F (9.1°C) in November to a cold 38.5°F (3.6°C). Weather in December »
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FAQ

What is the coldest month in Southbury?

The coldest month is January, with an average high-temperature of 33.1°F (0.6°C) and an average low-temperature of 21.4°F (-5.9°C).

How many days does it rain in Southbury?

Throughout the year, in Southbury, there are 171.2 rainfall days, and 36.3" (922mm) of precipitation is accumulated.

When does it snow in Southbury?

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

How many days does it snow in Southbury?

In Southbury, Connecticut, during the entire year, snow falls for 34.8 days and aggregates up to 17.48" (444mm) of snow.

What are the months with the lowest UV index in Southbury?

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

What is the most humid month in Southbury?

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

What is the snowiest month in Southbury?

The month with the most snowfall in Southbury is February, when snow falls for 9.4 days and typically aggregates up to 4.8" (122mm) of snow.

What is the month with the least sunshine in Southbury?

The month with the least sunshine in Southbury is February, with an average of 4.5h of sunshine.

When is Daylight Saving Time (DST) in Southbury?

On Sunday, March 12. 2023, at 2:00 am, Daylight Saving Time starts in Southbury, Connecticut, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 5. 2023, at 2:00 am, and the time zone reverts from EDT to EST.

What is the least humid month in Southbury?

April is the least humid month in Southbury, with an average relative humidity of 72%.

When it does not snow in Southbury?

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

When are the longest days in Southbury?

June has the longest days of the year, with an average of 15h and 8min of daylight.

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

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

What is the warmest month in Southbury?

With an average high-temperature of 82.4°F (28°C) and an average low-temperature of 63.1°F (17.3°C), July is the warmest month in Southbury.

What are the months with the most sunshine in Southbury?

The months with the most sunshine are July and August, with an average of 10.1h of sunshine.

What is the driest month in Southbury?

The month with the least rainfall in Southbury is September, when the rain falls for 13.6 days and typically collects 2.28" (58mm) of precipitation.

What is the wettest month in Southbury?

The month with the most rainfall in Southbury is December, when the rain falls for 12.1 days and typically aggregates up to 3.9" (99mm) of precipitation.

What is the month with the shortest days in Southbury?

The month with the shortest days in Southbury, Connecticut, is December, with an average of 9h and 14min of daylight.

Average temperature
Southbury, CT

Average temperature - Southbury, CT

The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (33.1°F).

The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (21.4°F).

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Average pressure
Southbury, CT

Average pressure - Southbury, 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
Southbury, CT

Average wind speed - Southbury, CT

The windiest month (with the highest average wind speed) is January (8.1mph).
The calmest month (with the lowest average wind speed) is August (5mph).

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Average rainfall
Southbury, CT

Average rainfall - Southbury, CT

The wettest month (with the highest rainfall) is December (3.9").
The driest month (with the least rainfall) is September (2.28").

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Average rainfall days
Southbury, CT

Average rainfall days - Southbury, CT

The month with the highest number of rainy days is July (18.5 days).
The month with the least rainy days is January (9.5 days).

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Average snowfall
Southbury, CT

Average snowfall - Southbury, CT

The month with the highest snowfall is February (4.8").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days
Southbury, CT

Average snowfall days - Southbury, CT

The month with the highest number of snowfall days is February (9.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight / Average sunshine
Southbury, CT

Average daylight / Average sunshine - Southbury, CT

The month with the longest days is June (Average daylight: 15h and 8min).
The month with the shortest days is December (Average daylight: 9h and 14min).

The months with the most sunshine are July and August (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).

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Average sunshine days
Southbury, CT

Average sunshine days - Southbury, CT

The month with the most sunshine days is November (17 days).
The months with the least sunshine days are May and June (10.3 days).

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Average UV index
Southbury, CT

Average UV index - Southbury, CT

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

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Average visibility
Southbury, CT

Average visibility - Southbury, CT

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

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