Climate and monthly weather forecast
Seymour, CT

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Weather in January

January, the same as December, is an icy winter month in Seymour, Connecticut, with an average temperature ranging between min 23.2°F (-4.9°C) and max 33.8°F (1°C). In Seymour, the month of January is known for its lowest average temperatures, reaching a high of 33.8°F (1°C) and a low of 23.2°F (-4.9°C). Weather in January »

Weather in February

February, the last month of the winter in Seymour, is also a wintry month, with an average temperature ranging between max 37°F (2.8°C) and min 24.1°F (-4.4°C). Seymour registers an average high-temperature of a still wintry 37°F (2.8°C) with the arrival of February, showing minor deviation from the preceding month. Weather in February »

Weather in March

March, the first month of the spring in Seymour, is a frosty month, with an average temperature varying between 30.9°F (-0.6°C) and 44.1°F (6.7°C). A subtle rise in the average high-temperature is observed during March, adjusting from a wintry 37°F (2.8°C) in February to a frosty 44.1°F (6.7°C). Weather in March »

Weather in April

April in Seymour, Connecticut, is a mild spring month, with an average temperature varying between 41.2°F (5.1°C) and 56.3°F (13.5°C). The arrival of April brings a temperature shift, with the average high-temperature escalating from a frosty 44.1°F (6.7°C) in March to a refreshing 56.3°F (13.5°C). Weather in April »

Weather in May

The last month of the spring, May, is an enjoyable month in Seymour, Connecticut, with an average temperature fluctuating between 50.5°F (10.3°C) and 67.1°F (19.5°C). With the onset of May, Seymour's average high-temperature experiences a rise, moving from April's moderate 56.3°F (13.5°C) to an enjoyable 67.1°F (19.5°C). Weather in May »

Weather in June

June, the first month of the summer in Seymour, is a moderately hot month, with an average temperature fluctuating between 75.7°F (24.3°C) and 58.6°F (14.8°C). June signifies a subtle uplift in the average high-temperature, adjusting from an enjoyable 67.1°F (19.5°C) in May to a moderately hot 75.7°F (24.3°C). Weather in June »

Weather in July

July, like June, in Seymour, Connecticut, is another warm summer month, with an average temperature varying between 82°F (27.8°C) and 65.3°F (18.5°C). July is the warmest month of the year, registering average temperatures as high as 82°F (27.8°C) and as low as 65.3°F (18.5°C). For most parts of July, the heat index is computed to be a hot 87.8°F (31°C). Weather in July »

Weather in August

The last month of the summer, August, is another warm month in Seymour, Connecticut, with an average temperature varying between 64°F (17.8°C) and 80.4°F (26.9°C). The high-temperature average in August for Seymour is a still moderately hot 80.4°F (26.9°C), staying closely aligned with July's conditions. Weather in August »

Weather in September

The first month of the autumn, September, is still a warm month in Seymour, Connecticut, with temperature in the range of an average low of 57.7°F (14.3°C) and an average high of 73.4°F (23°C). With September's onset, the weather reveals a slight temperature decrease, transitioning from a moderately hot 80.4°F (26.9°C) in August to a still warm 73.4°F (23°C). Weather in September »

Weather in October

October, like September, in Seymour, Connecticut, is another enjoyable autumn month, with an average temperature ranging between min 48.6°F (9.2°C) and max 61.5°F (16.4°C). October suggests a modest reduction in the average high-temperature, shifting from a warm 73.4°F (23°C) in September to a refreshing 61.5°F (16.4°C). Weather in October »

Weather in November

November, the last month of the autumn in Seymour, is also a frosty month, with an average temperature varying between 49.1°F (9.5°C) and 37.6°F (3.1°C). A moderate decline in the average high-temperature is seen during November, decreasing from an enjoyable 61.5°F (16.4°C) in October to a frosty 49.1°F (9.5°C). Weather in November »

Weather in December

The first month of the winter, December, is also an icy month in Seymour, Connecticut, with temperature in the range of an average high of 39.9°F (4.4°C) and an average low of 29.7°F (-1.3°C). As Seymour enters December, the average high-temperature decreases from the a chilly 49.1°F (9.5°C) of November to a cold 39.9°F (4.4°C). Weather in December »
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Frequently asked questions

What is the coldest time of year in Seymour?

Seymour, Connecticut, notes the coldest temperatures in January, with a average high of 33.8°F (1°C) and a low of 23.2°F (-4.9°C).

What is the driest month in Seymour?

The months with the least rainfall in Seymour, Connecticut, are January and February Rain falls for 5.3 days and accumulates 0.47" (12mm) of rain.

How many days does it rain in Seymour?

In Seymour, during the entire year, the rain falls for 118.8 days and collects up to 9.61" (244mm) of precipitation.

When does it snow in Seymour?

Months with snowfall in Seymour are January through March, November and December.

How many days does it snow in Seymour?

Throughout the year, there are 18.8 snowfall days, and 2.05" (52mm) of snow is accumulated.

When is the lowest UV index in Seymour?

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

What is the most humid month in Seymour?

February is the most humid month in Seymour, with an average relative humidity of 78%.

What is the month with the least sunshine in Seymour?

With an average of 4.7h of sunshine, February has the least sunshine of the year in Seymour.

When is Daylight Saving Time (DST) in Seymour?

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 Seymour?

With an average relative humidity of 72%, April is the least humid month in Seymour, Connecticut.

When it does not snow in Seymour?

April through October are months without snowfall.

When are the longest days in Seymour?

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

When is the highest UV index in Seymour?

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

What month is the hottest in Seymour?

In Seymour, the peak average temperatures are observed in July, with a high of 82°F (27.8°C) and a low of 65.3°F (18.5°C).

What is the rainiest month in Seymour?

July is the month with the most rainfall in Seymour. Rain falls for 14.3 days and accumulates 1.22" (31mm) of precipitation.

What are the months with the most sunshine in Seymour?

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

When does it snow the most in Seymour?

December is the month with the most snowfall in Seymour, Connecticut. Snow falls for 3.3 days and accumulates 0.55" (14mm) of snow.

What is the month with the shortest days in Seymour?

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

Average pressure
Seymour, CT

Average pressure - Seymour, 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
Seymour, CT

Average wind speed - Seymour, CT

The windiest month (with the highest average wind speed) is January (8.9mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).

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Average rainfall
Seymour, CT

Average rainfall - Seymour, CT

The wettest month (with the highest rainfall) is July (1.22").
The driest months (with the least rainfall) are January and February (0.47").

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Average rainfall days
Seymour, CT

Average rainfall days - Seymour, CT

The month with the highest number of rainy days is July (14.3 days).
The month with the least rainy days is January (5.3 days).

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Average snowfall
Seymour, CT

Average snowfall - Seymour, CT

The month with the highest snowfall is December (0.55").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days
Seymour, CT

Average snowfall days - Seymour, CT

The month with the highest number of snowfall days is February (5.8 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
Seymour, CT

Average daylight / Average sunshine - Seymour, 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 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 42min).

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Average sunshine days
Seymour, CT

Average sunshine days - Seymour, CT

The month with the most sunshine days is January (22.6 days).
The month with the least sunshine days is July (13.9 days).

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Average UV index
Seymour, CT

Average UV index - Seymour, 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
Seymour, CT

Average visibility - Seymour, CT

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

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Seymour, Connecticut, USA

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