October weather forecastNiantic, CT
October
Weather in October
October carries forward the fall season in Niantic, with a marked drop in temperatures from September. The smell of wet earth is common as precipitation ramps up, adding to the noticeable chill in the air. The cool winds of the month transform the landscape into a riot of russets, oranges, and yellows. The highest gusting winds of the year blow through Niantic at a 16.7mph (26.9km/h) pace. It is a time to enjoy the last of the lengthy days before winter makes its presence felt.Temperature
October brings a drop in Niantic's average high-temperature, falling from a pleasant 72°F (22.2°C) in September to a comfortable 61.7°F (16.5°C). Niantic registers a consistent average low-temperature of 50.9°F (10.5°C) during October.Humidity
The average relative humidity in October is 76%.Rainfall
In Niantic, in October, during 14.5 rainfall days, 3.39" (86mm) of precipitation is typically accumulated. In Niantic, during the entire year, the rain falls for 159.8 days and collects up to 33.07" (840mm) of precipitation.Snowfall
In Niantic, snow does not fall in May through October.Ocean temperature
In Niantic, the average seawater temperature in October is 62.8°F (17.1°C).Note: For most individuals, swimming in 62.8°F (17.1°C) is not a pleasant experience. The difficulty in managing breathing increases as the temperature decreases from 69.8°F (21°C) to 59°F (15°C).
Daylight
In October, the average length of the day is 11h and 5min.On the first day of October, sunrise is at 6:46 am and sunset at 6:30 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 5:44 pm EDT.
Sunshine
In October, the average sunshine is 6.2h.UV index
In October, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the average person.Note: A typical high UV index of 3 in October suggests the following recommendations:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Experience reduced UV exposure by about half when donning a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in October
Niantic, CT
- Average high temperature in October: 61.7°F
The warmest month (with the highest average high temperature) is July (78.6°F).
The month with the lowest average high temperature is January (36.1°F).
- Average low temperature in October: 50.9°F
The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (26.2°F).
Average pressure in October
Niantic, 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
Niantic, CT
- Average wind speed in October: 10.4mph
The windiest month (with the highest average wind speed) is January (11.9mph).
The calmest months (with the lowest average wind speed) are July and August (7.8mph).
Average humidity in October
Niantic, CT
- Average humidity in October: 76%
The month with the highest relative humidity is June (80%).
The months with the lowest relative humidity are January, March, April and November (74%).
Average rainfall in October
Niantic, CT
- Average rainfall in October: 3.39"
The wettest month (with the highest rainfall) is December (3.86").
The driest month (with the least rainfall) is September (1.65").
Average rainfall days in October
Niantic, CT
- Average rainfall days in October: 14.5 days
The month with the highest number of rainy days is July (15.8 days).
The month with the least rainy days is February (9.5 days).
Average snowfall in October
Niantic, CT
- Average snowfall in October: 0"
The month with the highest snowfall is March (2.56").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in October
Niantic, CT
- Average snowfall days in October: 0 days
The month with the highest number of snowfall days is February (6.8 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average sea temperature in October
Niantic, CT
- Average sea temperature in October: 62.8°F
The best month for swimming (with the highest average sea temperature) is August (72.1°F).
The coldest month (with the lowest average sea temperature) is February (38.8°F).
Average daylight in October /
Average sunshine in October
Niantic, 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
Niantic, CT
- Average sunshine days in October: 14.5 days
The month with the most sunshine days is November (16.5 days).
The month with the least sunshine days is February (12.5 days).
Average UV index in October
Niantic, 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).
Average cloud cover in October
Niantic, 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 29).
Average visibility in October
Niantic, 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).





