Climate and monthly weather forecast
Deep River, CT

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Weather in January

January, like December, in Deep River, Connecticut, is another cold winter month, with temperature in the range of an average high of 35.2°F (1.8°C) and an average low of 25.5°F (-3.6°C). Deep River experiences its lowest temperatures in January, with an average peak of 35.2°F (1.8°C) and a low of 25.5°F (-3.6°C). Weather in January »

Weather in February

The last month of the winter, February, is also an icy month in Deep River, Connecticut, with temperature in the range of an average high of 37.9°F (3.3°C) and an average low of 26.2°F (-3.2°C). Stepping into February, Deep River records an average high-temperature of a still icy 37.9°F (3.3°C), almost consistent with January. Weather in February »

Weather in March

The first month of the spring, March, is a chilly month in Deep River, Connecticut, with an average temperature fluctuating between 43.7°F (6.5°C) and 32.5°F (0.3°C). March marks a minor ascent in the average high-temperature, adjusting from February's wintry 37.9°F (3.3°C) to a chilly 43.7°F (6.5°C). Weather in March »

Weather in April

April is a cool spring month in Deep River, Connecticut, with an average temperature ranging between max 54.3°F (12.4°C) and min 41.7°F (5.4°C). April's arrival signals a temperature shift, moving from a frosty 43.7°F (6.5°C) in March to a cool 54.3°F (12.4°C). Weather in April »

Weather in May

May, the last month of the spring in Deep River, is an enjoyable month, with an average temperature ranging between max 64.9°F (18.3°C) and min 50.7°F (10.4°C). The start of May signals an increase in the average high-temperature, moving from a fresh 54.3°F (12.4°C) in April to a refreshing 64.9°F (18.3°C). Weather in May »

Weather in June

June, the first month of the summer in Deep River, is a pleasant month, with an average temperature varying between 58.8°F (14.9°C) and 73°F (22.8°C). A gentle upsurge in temperatures occurs as May gives way to June, with average highs shifting from a comfortable 64.9°F (18.3°C) to an agreeable 73°F (22.8°C). Weather in June »

Weather in July

July is a moderately hot summer month in Deep River, Connecticut, with temperature in the range of an average high of 79.7°F (26.5°C) and an average low of 66.6°F (19.2°C). July, on average, is the warmest month, registering a high temperature of 79.7°F (26.5°C) and a low of 66.6°F (19.2°C). Weather in July »

Weather in August

The last month of the summer, August, is also a moderately hot month in Deep River, Connecticut, with an average temperature ranging between min 65.7°F (18.7°C) and max 78.6°F (25.9°C). In August, Deep River experiences a barely noticeable shift in meteorological conditions, with average high-temperatures moving from 79.7°F (26.5°C) in July to a still moderately hot 78.6°F (25.9°C). Weather in August »

Weather in September

September, the first month of the autumn in Deep River, is also an agreeable month, with temperature in the range of an average low of 59.5°F (15.3°C) and an average high of 72.3°F (22.4°C). The transition into September is accompanied by a slight temperature decrease, with the average high-temperature shifting from a moderately hot 78.6°F (25.9°C) in August to a pleasant 72.3°F (22.4°C). Weather in September »

Weather in October

October, the same as September, is another refreshing autumn month in Deep River, Connecticut, with temperature in the range of an average low of 50.5°F (10.3°C) and an average high of 61.9°F (16.6°C). In October, the average high-temperature goes from an agreeable 72.3°F (22.4°C) in September to a refreshing 61.9°F (16.6°C). Weather in October »

Weather in November

November, the last month of the autumn in Deep River, is another cool month, with an average temperature fluctuating between 50.7°F (10.4°C) and 39.9°F (4.4°C). November shows a mild decline in the average high-temperature, falling from October's comfortable 61.9°F (16.6°C) to a fresh 50.7°F (10.4°C). Weather in November »

Weather in December

The first month of the winter, December, is still a cold month in Deep River, Connecticut, with an average temperature varying between 32.4°F (0.2°C) and 41.9°F (5.5°C). The start of December involves a subtle temperature drop, shifting from a fresh 50.7°F (10.4°C) in November to an icy 41.9°F (5.5°C). Weather in December »
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Frequently asked questions

What are the coldest months in Deep River?

Deep River's January weather, with an average high temperature of 35.2°F (1.8°C) and an average low temperature of 25.5°F (-3.6°C), tends to be the coldest of the year.

How much does it rain in Deep River?

Throughout the year, there are 166.2 rainfall days, and 34.8" (884mm) of precipitation is accumulated.

When does it snow in Deep River?

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

How much does it snow in Deep River?

Throughout the year, in Deep River, Connecticut, there are 24.2 snowfall days, and 9.53" (242mm) of snow is accumulated.

What are the months with the lowest UV index in Deep River?

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

What are the months with the least sunshine in Deep River?

February and December, with an average of 4.8h of sunshine, are months with the least sunshine in Deep River.

When does it snow the most in Deep River?

March is the month with the most snowfall in Deep River, Connecticut. Snow falls for 4.7 days and accumulates 2.76" (70mm) of snow.

When is Daylight Saving Time (DST) in Deep River?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Deep River, Connecticut, 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 Deep River?

The least humid month in Deep River, Connecticut, is April, with an average relative humidity of 73%.

What are the most humid months in Deep River?

May through July, with an average relative humidity of 78%, are most humid months in Deep River.

When it does not snow in Deep River?

In Deep River, Connecticut, snow does not fall in June through October.

When are the longest days in Deep River?

With an average of 15h and 6min of daylight, June has the longest days of the year in Deep River.

What are the months with the highest UV index in Deep River?

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

What are the warmest months in Deep River?

July, with an average high of 79.7°F (26.5°C) and a low of 66.6°F (19.2°C), signifies the warmest month of the year in Deep River, Connecticut.

What month has the most sunshine in Deep River?

August has the most sunshine of the year in Deep River, Connecticut, with an average of 10.6h of sunshine.

What is the driest month in Deep River?

The month with the least rainfall in Deep River, Connecticut, is September, when the rain falls for 13 days and typically collects 1.93" (49mm) of precipitation.

What is the rainiest month in Deep River?

The month with the most rainfall is December, when the rain falls for 13 days and typically aggregates up to 3.66" (93mm) of precipitation.

What is the month with the shortest days in Deep River?

The month with the shortest days in Deep River, Connecticut, is December, with an average of 9h and 12min of daylight.

Average temperature
Deep River, CT

Average temperature - Deep River, CT

The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (35.2°F).

The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (25.5°F).

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Average pressure
Deep River, CT

Average pressure - Deep River, 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
Deep River, CT

Average wind speed - Deep River, CT

The windiest month (with the highest average wind speed) is January (10.9mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).

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Average humidity
Deep River, CT

Average humidity - Deep River, CT

The months with the highest relative humidity are May, June and July (78%).
The month with the lowest relative humidity is April (73%).

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Average rainfall
Deep River, CT

Average rainfall - Deep River, CT

The wettest month (with the highest rainfall) is December (3.66").
The driest month (with the least rainfall) is September (1.93").

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Average rainfall days
Deep River, CT

Average rainfall days - Deep River, CT

The month with the highest number of rainy days is July (17 days).
The month with the least rainy days is January (9 days).

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Average snowfall
Deep River, CT

Average snowfall - Deep River, CT

The month with the highest snowfall is March (2.76").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days
Deep River, CT

Average snowfall days - Deep River, CT

The month with the highest number of snowfall days is February (7 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight / Average sunshine
Deep River, CT

Average daylight / Average sunshine - Deep River, 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 36min).
The months with the least sunshine are February and December (Average sunshine: 4h and 48min).

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Average sunshine days
Deep River, CT

Average sunshine days - Deep River, CT

The month with the most sunshine days is November (17.1 days).
The month with the least sunshine days is July (11.7 days).

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Average UV index
Deep River, CT

Average UV index - Deep River, 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
Deep River, CT

Average visibility - Deep River, CT

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

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Deep River, Connecticut, USA

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