Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
Storrs records a mild change in average high-temperature during September, easing from a moderately hot 80.2°F (26.8°C) in August to a pleasant 72.9°F (22.7°C). Throughout September, Storrs's nights cool down to an average of 55.4°F (13°C).Humidity
In Storrs, Connecticut, the average relative humidity in September is 78%.Rainfall
The month with the least rainfall in Storrs is September, when the rain falls for 9.6 days and typically collects 0.39" (10mm) of precipitation.Snowfall
June through October are months without snowfall in Storrs.Daylight
In September, the average length of the day in Storrs is 12h and 28min.On the first day of the month, sunrise is at 6:15 am and sunset at 7:21 pm. On the last day of September, in Storrs, sunrise is at 6:45 am and sunset at 6:31 pm EDT.
Sunshine
In Storrs, the average sunshine in September is 8.6h.UV index
In September, the average daily maximum UV index in Storrs is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A maximum UV index of 4 in September translates into the following recommendations:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Storrs in September?
What is the average humidity in September in Storrs?
What is the driest month in Storrs?
How many days does it rain in September in Storrs?
When it does not snow in Storrs?
How many hours of daylight does Storrs have in September?
When is the sunrise / sunset in September in Storrs?
How long on average sun shines in September in Storrs?
What is the UV index intensity in September in Storrs?
Average temperature in September
Storrs, CT
- Average high temperature in September: 72.9°F
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (33.4°F).
- Average low temperature in September: 55.4°F
The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (21.2°F).
Average pressure in September
Storrs, CT
- Average pressure in September: 30.05"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 September
Storrs, CT
- Average wind speed in September: 6.2mph
The windiest month (with the highest average wind speed) is January (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).
Average humidity in September
Storrs, CT
- Average humidity in September: 78%
The month with the highest relative humidity is February (80%).
The month with the lowest relative humidity is April (72%).
Average rainfall in September
Storrs, CT
- Average rainfall in September: 0.39"
The wettest month (with the highest rainfall) is July (1.14").
The driest month (with the least rainfall) is September (0.39").
Average rainfall days in September
Storrs, CT
- Average rainfall days in September: 9.6 days
The month with the highest number of rainy days is July (13.4 days).
The month with the least rainy days is January (5.6 days).
Average snowfall in September
Storrs, CT
- Average snowfall in September: 0"
The month with the highest snowfall is March (0.94").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in September
Storrs, CT
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (5.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Storrs, CT
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 4h and 42min).
Average sunshine days in September
Storrs, CT
- Average sunshine days in September: 18.7 days
The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is July (14.9 days).
Average UV index in September
Storrs, CT
- Average UV index in September: 4
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 September
Storrs, CT
- Average cloud cover in September: 37
The months with the most cloud cover are February, March, May and December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in September
Storrs, CT
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, October, November and December (6mi).
The months with the lowest visibility are May, June, July, August and September (5mi).
Storrs, Connecticut, USA
Weather forecast for your location
2. Allow the app to use your location