October weather forecastStonington, CT

October
Weather in October
October continues the fall vibe in Stonington, with a further recede in temperature. The city experiences a gradual shift towards cooler days, while rainfall amounts start to rise. The rainfall averages around 3.43" (87mm), making it the heaviest precipitation month of the year. Despite the cooler weather, the city maintains its allure as the fall foliage enters its prime. Heading into November, one can expect more fluctuations in the weather.Temperature
Stonington observes a minor decrease in the average high-temperature with the arrival of October, falling from September's pleasant 71.4°F (21.9°C) to a comfortable 61.7°F (16.5°C). Throughout October, an average nighttime temperature of 51.6°F (10.9°C) is experienced.Humidity
The average relative humidity in October is 76%.Rainfall
In Stonington, Connecticut, during October, the rain falls for 14.1 days and regularly aggregates up to 3.43" (87mm) of precipitation. In Stonington, during the entire year, the rain falls for 166.1 days and collects up to 34.09" (866mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. October is the first month it typically snows. Throughout October, in the average 0.1 snowfall days, it receives 0.24" (6mm) of snow. Throughout the year, there are 24.7 snowfall days, and 7.87" (200mm) of snow is accumulated.Daylight
The average length of the day in October is 11h and 5min.On the first day of the month, sunrise is at 6:45 am and sunset at 6:29 pm. On the last day of October, sunrise is at 7:18 am and sunset at 5:43 pm EDT.
Sunshine
The average sunshine in October 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 average individuals.Note: In October, a daily maximum UV index of 3 leads to the following instructions:
Exercise care. People with light skin might get burns in fewer than 30 minutes. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in October
Stonington, 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
Stonington, 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
Stonington, 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
Stonington, 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
Stonington, 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
Stonington, 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
Stonington, 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
Stonington, 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 daylight in October /
Average sunshine in October
Stonington, CT
- Average daylight in October: 11h and 6min
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 18min).
- Average sunshine in October: 6h 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 54min).
Average sunshine days in October
Stonington, 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
Stonington, 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
Stonington, 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
Stonington, 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).





