October weather forecast
New Haven, CT

The greeny New Haven Green in Connecticut, with the rest of the city and a far away dramatic landscape
The greeny New Haven Green in Connecticut, with the rest of the city and a far away dramatic landscape

Weather in October

October, like September, in New Haven, Connecticut, is another comfortable autumn month, with temperature in the range of an average low of 50.9°F (10.5°C) and an average high of 61.9°F (16.6°C).

Temperature

In New Haven, the average high-temperature in October drops from a pleasant 72.5°F (22.5°C) in September to an enjoyable 61.9°F (16.6°C). In New Haven, Connecticut, in October, the average low-temperature is 50.9°F (10.5°C).

Humidity

The average relative humidity in October is 75%.

Rainfall

In New Haven, during October, the rain falls for 14.3 days and regularly aggregates up to 3.54" (90mm) of precipitation. Throughout the year, there are 167.2 rainfall days, and 35.71" (907mm) of precipitation is accumulated.

Snowfall

In New Haven, snow does not fall in May through October.

Ocean temperature

In New Haven, the average water temperature is 63.1°F (17.3°C).
Note: For swimming, a surface water temperature of 63.1°F (17.3°C) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 69.8°F (21°C).

Daylight

In October, the average length of the day in New Haven is 11h and 5min.
On the first day of October, sunrise is at 6:48 am and sunset at 6:34 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 5:48 pm EDT.

Sunshine

The average sunshine in October is 6h.

UV index

In October, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 3 in October transform into the following instructions:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in October in New Haven?

In New Haven, Connecticut, in October, the average high-temperature is 61.9°F (16.6°C), and the average low-temperature is 50.9°F (10.5°C).

What is the average humidity in October in New Haven?

In October, the average relative humidity in New Haven is 75%.

How much does it rain in New Haven in October?

In New Haven, Connecticut, in October, during 14.3 rainfall days, 3.54" (90mm) of precipitation is typically accumulated.

When it does not snow in New Haven?

In New Haven, Connecticut, snow does not fall in May through October.

Does it snow in New Haven in October?

In New Haven, in October, it doesn't snow. In November, it regularly snows.

How cold is the water in October in New Haven?

In New Haven, Connecticut, the average seawater temperature in October is 63.1°F (17.3°C). Swimming in 63.1°F (17.3°C) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 69.8°F (21°C).

How many hours of daylight does New Haven have in October?

The average day length in October is 11h and 5min.

When is the sunrise / sunset in October in New Haven?

In October, on the first day of the month, sunrise is at 6:48 am and sunset at 6:34 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 5:48 pm EDT.

How long on average sun shines in October in New Haven?

In New Haven, Connecticut, the average sunshine duration in October is 6h.

How high is the UV index in October in New Haven?

In October, the average daily maximum UV index in New Haven is 3. A UV Index of 3 to 5 symbolizes a moderate vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in October
New Haven, CT

Average temperature in October - New Haven, CT
  • Average high temperature in October: 61.9°F

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).

  • Average low temperature in October: 50.9°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 in October
New Haven, CT

Average pressure in October - New Haven, CT
  • Average pressure in October: 30.01"Hg

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 in October
New Haven, CT

Average wind speed in October - New Haven, CT
  • Average wind speed in October: 9.3mph

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 in October
New Haven, CT

Average humidity in October - New Haven, CT
  • Average humidity in October: 75%

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

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Average rainfall in October
New Haven, CT

Average rainfall in October - New Haven, CT
  • Average rainfall in October: 3.54"

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 in October
New Haven, CT

Average rainfall days in October - New Haven, CT
  • Average rainfall days in October: 14.3 days

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 in October
New Haven, CT

Average snowfall in October - New Haven, CT
  • Average snowfall in October: 0"

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

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Average snowfall days in October
New Haven, CT

Average snowfall days in October - New Haven, CT
  • Average snowfall days in October: 0.1 days

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

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Average sea temperature in October
New Haven, CT

Average sea temperature in October - New Haven, CT
  • Average sea temperature in October: 63.1°F

The best month for swimming (with the highest average sea temperature) is August (73°F).
The coldest month (with the lowest average sea temperature) is February (38.5°F).

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Average daylight in October /
Average sunshine in October
New Haven, CT

Average daylight in October / Average sunshine in October - New Haven, CT
  • Average daylight in October: 11h and 5min

The month with the longest days is June (Average daylight: 15h and 7min).
The month with the shortest days is December (Average daylight: 9h and 15min).

  • Average sunshine in October: 6h and 0min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

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Average sunshine days in October
New Haven, CT

Average sunshine days in October - New Haven, CT
  • Average sunshine days in October: 14.6 days

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 in October
New Haven, CT

Average UV index in October - New Haven, CT
  • Average UV index in October: 3

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 cloud cover in October
New Haven, CT

Average cloud cover in October - New Haven, CT
  • Average cloud cover in October: 41

The months with the most cloud cover are February and December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 29).

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Average visibility in October
New Haven, CT

Average visibility in October - New Haven, CT
  • Average visibility in October: 6mi

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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