October weather forecast
Mystic, CT

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Weather in October

The warmth of October makes it a popular month for visitors to the historic seaport city. As the month progresses, the foliage changes color, providing a splendid display of fall hues. All this while, the average high temperature cools to a comfortable 61.7°F (16.5°C). Mystic dons a whole new look, with the changing leaves adding to the charm of the historical architecture and beautiful landscapes. With the transition from summer to autumn fully underway, it's a great time to explore the scenic, winding trails of the region.

Temperature

Observing a mild shift, the average high-temperature during October reduces from September's pleasant 71.4°F (21.9°C) to a comfortable 61.7°F (16.5°C). October witnesses an average low-temperature hovering around a cool 51.6°F (10.9°C).

Humidity

The average relative humidity in October is 76%.

Rainfall

In October, the rain falls for 14.1 days. Throughout October, 3.43" (87mm) of precipitation is accumulated. Throughout the year, there are 166.1 rainfall days, and 34.09" (866mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through April, October through December. October is the first month it typically snows. Throughout October, in the average 0.1 snowfall days, it receives 0.24" (6mm) of snow. In Mystic, during the entire year, snow falls for 24.7 days and aggregates up to 7.87" (200mm) of snow.

Ocean temperature

In Mystic, Connecticut, the average seawater temperature in October is 62.4°F (16.9°C).
Note: Most people do not find swimming enjoyable in water of 62.4°F (16.9°C). The task of controlling breathing becomes tougher as the temperature drops from 69.8°F (21°C) to 59°F (15°C).

Daylight

The average length of the day in October is 11h and 5min.
On the first day of October, sunrise is at 6:45 am and sunset at 6:29 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 5:43 pm EDT.

Sunshine

In October, the average sunshine is 6.2h.

UV index

The average daily maximum UV index in October is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the average person.
Note: An average UV index of 3 in October transforms into this advice:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.

Frequently asked questions

What is the average October temperature in Mystic?

The high-temperature during October is 61.7°F (16.5°C) and the low-temperature is 51.6°F (10.9°C).

What is the average humidity in October?

In October, the average relative humidity is 76%.

How many days does it rain in October in Mystic?

In Mystic, during October, the rain falls for 14.1 days and regularly aggregates up to 3.43" (87mm) of precipitation.

When does it start to snow?

October is the first month it typically snows. Throughout October, in the average 0.1 snowfall days, it receives 0.24" (6mm) of snow.

How cold is the water in October?

In October, the average ocean temperature is 62.4°F (16.9°C). Swimming in 62.4°F (16.9°C) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 69.8°F (21°C).

What is the average length of the day in October?

In Mystic, the average day length in October is 11h and 5min.

When are sunrise and sunset in October?

On the first day of October, sunrise is at 6:45 am and sunset at 6:29 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 5:43 pm EDT.

How long on average sun shines in October in Mystic?

In October, the average sunshine duration is 6.2h.

How high is the UV index in October in Mystic?

In October, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a moderate vulnerability from unsafe 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
Mystic, CT

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

The warmest month (with the highest average high temperature) is July (77.9°F).
The month with the lowest average high temperature is January (36.5°F).

  • Average low temperature in October: 51.6°F

The month with the highest average low temperature is July (66.9°F).
The coldest month (with the lowest average low temperature) is January (26.6°F).

Average pressure in October
Mystic, CT

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

The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in October
Mystic, CT

Average wind speed in October - Mystic, CT
  • Average wind speed in October: 10.9mph

The windiest month (with the highest average wind speed) is January (12.4mph).
The calmest month (with the lowest average wind speed) is August (8.1mph).

Average humidity in October
Mystic, CT

Average humidity in October - Mystic, CT
  • Average humidity in October: 76%

The month with the highest relative humidity is June (81%).
The months with the lowest relative humidity are January, March, April and November (74%).

Average rainfall in October
Mystic, CT

Average rainfall in October - Mystic, CT
  • Average rainfall in October: 3.43"

The wettest month (with the highest rainfall) is December (3.86").
The driest month (with the least rainfall) is September (1.73").

Average rainfall days in October
Mystic, CT

Average rainfall days in October - Mystic, CT
  • Average rainfall days in October: 14.1 days

The month with the highest number of rainy days is July (17.1 days).
The month with the least rainy days is February (10.1 days).

Average snowfall in October
Mystic, CT

Average snowfall in October - Mystic, CT
  • Average snowfall in October: 0.24"

The month with the highest snowfall is March (2.44").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in October
Mystic, CT

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

The month with the highest number of snowfall days is January (6.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average sea temperature in October
Mystic, CT

Average sea temperature in October - Mystic, CT
  • Average sea temperature in October: 62.5°F

The best month for swimming (with the highest average sea temperature) is August (70.3°F).
The coldest month (with the lowest average sea temperature) is February (37.9°F).

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

Average daylight in October / Average sunshine in October - Mystic, 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: 6h and 1min

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 54min).

Average sunshine days in October
Mystic, CT

Average sunshine days in October - Mystic, CT
  • Average sunshine days in October: 14.6 days

The month with the most sunshine days is November (16.5 days).
The months with the least sunshine days are June and July (11.7 days).

Average UV index in October
Mystic, CT

Average UV index in October - Mystic, 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 and December (UV index 2).

Average cloud cover in October
Mystic, CT

Average cloud cover in October - Mystic, CT
  • Average cloud cover in October: 40

The months with the most cloud cover are February, March and December (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 28).

Average visibility in October
Mystic, CT

Average visibility in October - Mystic, 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).

Mystic, Connecticut, USA

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