Monthly weather forecast and climate
West Haven, CT

Weather in January

January, the same as December, is another cold winter month in West Haven, Connecticut, with average temperature ranging between min 25.5°F (-3.6°C) and max 35.1°F (1.7°C). With an average high-temperature of 35.1°F (1.7°C) and an average low-temperature of 25.5°F (-3.6°C), January is the coldest month. Weather in January »

Weather in February

February, the last month of the winter, in West Haven, is also a wintry month, with average temperature varying between 37.9°F (3.3°C) and 26.6°F (-3°C). In West Haven, the average high-temperature is relatively the same as in January - a still cold 37.9°F (3.3°C). Weather in February »

Weather in March

The first month of the spring, March, is a frosty month in West Haven, Connecticut, with average temperature varying between 43.9°F (6.6°C) and 33.1°F (0.6°C). In West Haven, the average high-temperature marginally rises, from a wintry 37.9°F (3.3°C) in February, to a frosty 43.9°F (6.6°C). Weather in March »

Weather in April

April is a cool spring month in West Haven, Connecticut, with temperature in the range of an average low of 42.3°F (5.7°C) and an average high of 54.9°F (12.7°C). In West Haven, Connecticut, the average high-temperature increases, from a chilly 43.9°F (6.6°C) in March, to a fresh 54.9°F (12.7°C). Weather in April »

Weather in May

The last month of the spring, May, is an enjoyable month in West Haven, Connecticut, with average temperature varying between 51.4°F (10.8°C) and 65.1°F (18.4°C). In West Haven, the average high-temperature rises, from a fresh 54.9°F (12.7°C) in April, to an enjoyable 65.1°F (18.4°C). Weather in May »

Weather in June

June, the first month of the summer, in West Haven, is a moderately hot month, with temperature in the range of an average low of 60.4°F (15.8°C) and an average high of 73.9°F (23.3°C). In West Haven, the average high-temperature marginally rises, from an enjoyable 65.1°F (18.4°C) in May, to a moderately hot 73.9°F (23.3°C). Weather in June »

Weather in July

July, the same as June, is another warm summer month in West Haven, Connecticut, with average temperature fluctuating between 80.4°F (26.9°C) and 67.6°F (19.8°C). The warmest month is July, with an average high-temperature of 80.4°F (26.9°C) and an average low-temperature of 67.6°F (19.8°C). Weather in July »

Weather in August

August, the last month of the summer, in West Haven, is also a moderately hot month, with temperature in the range of an average low of 66.9°F (19.4°C) and an average high of 79.7°F (26.5°C). In August, the average high-temperature is almost the same as in July - a still warm 79.7°F (26.5°C). Weather in August »

Weather in September

September, the first month of the autumn, in West Haven, is also an agreeable month, with average temperature varying between 60.3°F (15.7°C) and 72.5°F (22.5°C). In September, the average high-temperature slightly decreases, from a warm 79.7°F (26.5°C) in August, to an agreeable 72.5°F (22.5°C). Weather in September »

Weather in October

October, the same as September, is another comfortable autumn month in West Haven, Connecticut, with average temperature ranging between min 50.9°F (10.5°C) and max 61.9°F (16.6°C). In West Haven, the average high-temperature drops, from an agreeable 72.5°F (22.5°C) in September, to an enjoyable 61.9°F (16.6°C). Weather in October »

Weather in November

The last month of the autumn, November, is another cool month in West Haven, Connecticut, with average temperature varying between 40.1°F (4.5°C) and 50.7°F (10.4°C). In November, the average high-temperature drops, from an enjoyable 61.9°F (16.6°C) in October, to a fresh 50.7°F (10.4°C). Weather in November »

Weather in December

The first month of the winter, December, is also a wintry month in West Haven, Connecticut, with average temperature fluctuating between 41.7°F (5.4°C) and 32.5°F (0.3°C). In December, the average high-temperature drops, from a cool 50.7°F (10.4°C) in November, to a cold 41.7°F (5.4°C). Weather in December »
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FAQ

What is the coldest month in West Haven?

January is the coldest month, with an average high-temperature of 35.1°F (1.7°C) and an average low-temperature of 25.5°F (-3.6°C).

How much does it rain in West Haven?

In West Haven, Connecticut, during the entire year, the rain falls for 167.2 days and collects up to 35.71" (907mm) of precipitation.

When does it snow in West Haven?

Months with snowfall in West Haven are January through April, November and December.

How much does it snow in West Haven?

Throughout the year, in West Haven, Connecticut, there are 23.1 snowfall days, and 9.21" (234mm) of snow is accumulated.

What are the months with the lowest UV index in West Haven?

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

What are the most humid months in West Haven?

February, May and June, with an average relative humidity of 76%, are most humid months in West Haven, Connecticut.

What is the month with the least sunshine in West Haven?

The month with the least sunshine is February, with an average of 4.7h of sunshine.

What is the snowiest month in West Haven?

The month with the most snowfall is March when snow falls for 4.8 days and typically aggregates up to 2.8" (71mm) of snow.

What is the least humid month in West Haven?

Months with the lowest humidity in West Haven are April and November, with an average relative humidity of 72%.

When it does not snow in West Haven?

May through October are months without snowfall in West Haven, Connecticut.

When are the longest days in West Haven?

June has the longest days of the year in West Haven, Connecticut, with an average of 15.1h of daylight.

When is the highest UV index in West Haven?

Months with the highest UV index in West Haven, Connecticut, are June through August, with an average maximum UV index of 6.

What is the warmest month in West Haven?

With an average high-temperature of 80.4°F (26.9°C) and an average low-temperature of 67.6°F (19.8°C), July is the warmest month.

What month has the most sunshine in West Haven?

July has the most sunshine of the year in West Haven, Connecticut, with an average of 10.6h of sunshine.

What is the driest month in West Haven?

The month with the least rainfall is September when the rain falls for 13.4 days and typically collects 2.24" (57mm) of precipitation.

What is the wettest month in West Haven?

December is the month with the most rainfall in West Haven, Connecticut. Rain falls for 12.5 days and accumulates 3.86" (98mm) of precipitation.

What is the month with the shortest days in West Haven?

With an average of 9.3h of daylight, December has the shortest days of the year.

Average temperature
West Haven, CT

Average temperature - West Haven, CT

The warmest month (with the highest average high temperature) is July (80.4°F).
The month with the lowest average high temperature is January (35.1°F).

The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (25.5°F).

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Average pressure
West Haven, CT

Average pressure - West Haven, CT

The month with the highest atmospheric pressure is November (30.09").
The month with the lowest atmospheric pressure is June (29.93").

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Average wind speed
West Haven, CT

Average wind speed - West Haven, CT

The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).

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Average humidity
West Haven, CT

Average humidity - West Haven, CT

Months with the highest relative humidity are February, May and June (76%).
Months with the lowest relative humidity are April and November (72%).

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Average rainfall
West Haven, CT

Average rainfall - West Haven, CT

The wettest month (with the highest rainfall) is December (3.86").
The driest month (with the least rainfall) is September (2.24").

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Average rainfall days
West Haven, CT

Average rainfall days - West Haven, CT

The month with the highest number of rainy days is July (18 days).
The month with the least rainy days is January (9.4 days).

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Average snowfall
West Haven, CT

Average snowfall - West Haven, CT

The month with the highest snowfall is March (2.8").
Months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days
West Haven, CT

Average snowfall days - West Haven, CT

The month with the highest number of snowfall days is February (7.3 days).
Months with the least snowfall days are June, July, August and September (0 days).

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Average daylight / Average sunshine
West Haven, CT

Average daylight / Average sunshine - West Haven, CT

The month with the longest days is June (Average daylight: 15.1h).
The month with the shortest days is December (Average daylight: 9.3h).

The month with the most sunshine is July (Average sunshine: 10.6h).
The month with the least sunshine is February (Average sunshine: 4.7h).

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Average sunshine days
West Haven, CT

Average sunshine days - West Haven, CT

The month with the most sunshine days is November (17.3 days).
The month with the least sunshine days is August (11.3 days).

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Average UV index
West Haven, CT

Average UV index - West Haven, CT

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

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Average visibility
West Haven, CT

Average visibility - West Haven, CT

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

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