October weather forecastRiverside, CT
October
Weather in October
October sees a further dip in temperatures, clearly exiting from the warm season into the embrace of fall. The weather exhibits an assortment ranging from clear, sunny days to occasional rainy spells. Shorter daytime and longer nights contribute to the coolness of the weather, accompanied by a steady wind movement. It is the perfect time to enjoy the stunning autumn landscapes before the impending winter chills. The rainfall shows an increase to 3.46" (88mm), matching up with the highest in the year, setting its mark on October's weather.Temperature
October shows a mild decline in the average high-temperature, falling from September's pleasant 73.2°F (22.9°C) to a comfortable 62.4°F (16.9°C). Throughout October, Riverside's nights cool down to an average of 52°F (11.1°C).Humidity
In October, the average relative humidity is 74%.Rainfall
In Riverside, in October, it is raining for 13.7 days, with typically 3.46" (88mm) of accumulated precipitation. In Riverside, during the entire year, the rain falls for 166.6 days and collects up to 38.07" (967mm) of precipitation.Snowfall
In Riverside, snow does not fall in May through October.Ocean temperature
In Riverside, the average seawater temperature in October is 62.2°F (16.8°C).Note: For most, swimming in 62.2°F (16.8°C) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 69.8°F (21°C) to 59°F (15°C).
Daylight
The average length of the day in October is 11h and 6min.On the first day of October, sunrise is at 6:51 am and sunset at 6:35 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 5:50 pm EDT.
Sunshine
In October, the average sunshine is 5.8h.UV index
The average daily maximum UV index in October is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: In October, a daily maximum UV index of 3 leads to the following instructions:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in October
Riverside, CT
- Average high temperature in October: 62.4°F
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (36°F).
- Average low temperature in October: 52°F
The month with the highest average low temperature is July (69.3°F).
The coldest month (with the lowest average low temperature) is January (26.2°F).
Average pressure in October
Riverside, CT
- Average pressure in October: 30.02"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).
Average wind speed in October
Riverside, CT
- Average wind speed in October: 8.9mph
The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).
Average humidity in October
Riverside, CT
- Average humidity in October: 74%
The months with the highest relative humidity are February, May, June and December (75%).
The month with the lowest relative humidity is August (71%).
Average rainfall in October
Riverside, CT
- Average rainfall in October: 3.46"
The wettest month (with the highest rainfall) is July (4.13").
The driest month (with the least rainfall) is January (2.44").
Average rainfall days in October
Riverside, CT
- Average rainfall days in October: 13.7 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is January (8.6 days).
Average snowfall in October
Riverside, CT
- Average snowfall in October: 0"
The month with the highest snowfall is February (2.6").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in October
Riverside, CT
- Average snowfall days in October: 0 days
The month with the highest number of snowfall days is February (7.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in October
Riverside, CT
- Average sea temperature in October: 62.2°F
The best month for swimming (with the highest average sea temperature) is August (73.1°F).
The coldest month (with the lowest average sea temperature) is February (39.5°F).
Average daylight in October /
Average sunshine in October
Riverside, 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: 5h and 48min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The months with the least sunshine are February and December (Average sunshine: 4h and 42min).
Average sunshine days in October
Riverside, CT
- Average sunshine days in October: 15.2 days
The month with the most sunshine days is November (17.9 days).
The month with the least sunshine days is June (11.1 days).
Average UV index in October
Riverside, 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
Riverside, CT
- Average cloud cover in October: 42
The month with the most cloud cover is December (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in October
Riverside, 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).





