October weather forecast
Portland, CT

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Weather in October

October, the same as September, is another enjoyable autumn month in Portland, Connecticut, with an average temperature fluctuating between 61.7°F (16.5°C) and 47.1°F (8.4°C).

Temperature

The beginning of October involves a decrease in the average high-temperature, transitioning from a warm 73.6°F (23.1°C) in September to a comfortable 61.7°F (16.5°C). Throughout October nights, Portland registers an average low-temperature of 47.1°F (8.4°C).

Humidity

In October, the average relative humidity in Portland is 77%.

Rainfall

In October, in Portland, the rain falls for 14.2 days. Throughout October, 3.27" (83mm) of precipitation is accumulated. Throughout the year, in Portland, there are 162.2 rainfall days, and 34.13" (867mm) of precipitation is accumulated.

Snowfall

June through October are months without snowfall.

Daylight

In October, the average length of the day is 11h and 5min.
On the first day of the month, sunrise is at 6:48 am and sunset at 6:31 pm. On the last day of October, in Portland, Connecticut, sunrise is at 7:22 am and sunset at 5:46 pm EDT.

Sunshine

In October, the average sunshine is 5.9h.

UV index

In Portland, the average daily maximum UV index in October is 3. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the average person.
Note: A maximum daily UV index of 3 during October morphs into the following directions:
Take measures. Individuals with light skin might experience burns in under 30 minutes. It's recommended to limit sun exposure when its radiation is at its peak during midday. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
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Frequently asked questions

What are the temperatures in Portland in October?

The average high-temperature, in October, in Portland, is 61.7°F (16.5°C), while the average low-temperature is 47.1°F (8.4°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which represents the influence of relative humidity on air temperature, in August is computed to be 86°F (30°C).

What is the average humidity in October in Portland?

The average relative humidity in October in Portland, Connecticut, is 77%.

How much does it rain in Portland in October?

In October, in Portland, the rain falls for 14.2 days. Throughout October, 3.27" (83mm) of precipitation is accumulated.

When it does not snow in Portland?

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

Does it snow in Portland in October?

In Portland, Connecticut, in October, it doesn't snow. In November, it regularly snows.

How many hours of daylight does Portland have in October?

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

When is the sunrise / sunset in October in Portland?

On the first day of October, sunrise is at 6:48 am and sunset at 6:31 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 5:46 pm EDT.

How long on average sun shines in October in Portland?

In October, the average sunshine duration in Portland, Connecticut, is 5.9h.

What is the UV index reading in October in Portland?

In Portland, Connecticut, the average daily maximum UV index in October is 3. A UV Index value 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 daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in October
Portland, CT

Average temperature in October - Portland, CT
  • Average high temperature in October: 61.7°F

The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (34°F).

  • Average low temperature in October: 47.1°F

The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (22.1°F).

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Average pressure in October
Portland, CT

Average pressure in October - Portland, 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
Portland, CT

Average wind speed in October - Portland, CT
  • Average wind speed in October: 7.1mph

The windiest months (with the highest average wind speed) are January and March (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).

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Average humidity in October
Portland, CT

Average humidity in October - Portland, CT
  • Average humidity in October: 77%

The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is April (71%).

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Average rainfall in October
Portland, CT

Average rainfall in October - Portland, CT
  • Average rainfall in October: 3.27"

The wettest month (with the highest rainfall) is December (3.66").
The driest month (with the least rainfall) is September (1.89").

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Average rainfall days in October
Portland, CT

Average rainfall days in October - Portland, CT
  • Average rainfall days in October: 14.2 days

The month with the highest number of rainy days is July (17.2 days).
The month with the least rainy days is January (9.1 days).

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Average snowfall in October
Portland, CT

Average snowfall in October - Portland, CT
  • Average snowfall in October: 0"

The month with the highest snowfall is March (4.13").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in October
Portland, CT

Average snowfall days in October - Portland, CT
  • Average snowfall days in October: 0.1 days

The month with the highest number of snowfall days is February (8.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in October /
Average sunshine in October
Portland, CT

Average daylight in October / Average sunshine in October - Portland, CT
  • Average daylight in October: 11h and 1min

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).

  • Average sunshine in October: 5h and 5min

The months with the most sunshine are July and August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

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Average sunshine days in October
Portland, CT

Average sunshine days in October - Portland, CT
  • Average sunshine days in October: 14.4 days

The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is June (11.3 days).

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Average UV index in October
Portland, CT

Average UV index in October - Portland, 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
Portland, CT

Average cloud cover in October - Portland, CT
  • Average cloud cover in October: 43

The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 33).

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Average visibility in October
Portland, CT

Average visibility in October - Portland, CT
  • Average visibility in October: 6mi

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

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Portland, Connecticut, USA

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