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
The beginning of September brings a slight decrease in the average high-temperature, transitioning from a warm 80.4°F (26.9°C) in August to a pleasant 73.2°F (22.9°C). During September, Roxbury experiences an average low-temperature of 55.2°F (12.9°C) at night.Humidity
In Roxbury, the average relative humidity in September is 79%.Rainfall
September is the month with the least rainfall. Rain falls for 13.6 days and accumulates 2.28" (58mm) of precipitation.Snowfall
In Roxbury, snow does not fall in June through October.Daylight
The average length of the day in September in Roxbury is 12h and 28min.On the first day of September, sunrise is at 6:20 am and sunset at 7:25 pm. On the last day of the month, sunrise is at 6:49 am and sunset at 6:36 pm EDT.
Sunshine
In September, the average sunshine is 8.4h.UV index
The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: An average UV index of 4 in September transforms into this advice:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. The solar radiation around mid-day is intense; avoid the Sun and stay safe. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Roxbury?
What is the average humidity in September in Roxbury?
What is the driest month in Roxbury?
How many days does it rain in September in Roxbury?
When it does not snow in Roxbury?
How many hours of daylight does Roxbury have in September?
When are sunrise and sunset in September in Roxbury?
How long on average sun shines in September in Roxbury?
How high is the UV index in September in Roxbury?
Average temperature in September
Roxbury, CT
- Average high temperature in September: 73.2°F
The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (33.1°F).
- Average low temperature in September: 55.2°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (21.4°F).
Average pressure in September
Roxbury, CT
- Average pressure in September: 30.06"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 September
Roxbury, CT
- Average wind speed in September: 5.6mph
The windiest month (with the highest average wind speed) is January (8.1mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in September
Roxbury, CT
- Average humidity in September: 79%
The month with the highest relative humidity is February (80%).
The month with the lowest relative humidity is April (72%).
Average rainfall in September
Roxbury, CT
- Average rainfall in September: 2.28"
The wettest month (with the highest rainfall) is December (3.9").
The driest month (with the least rainfall) is September (2.28").
Average rainfall days in September
Roxbury, CT
- Average rainfall days in September: 13.6 days
The month with the highest number of rainy days is July (18.5 days).
The month with the least rainy days is January (9.5 days).
Average snowfall in September
Roxbury, CT
- Average snowfall in September: 0"
The month with the highest snowfall is February (4.8").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in September
Roxbury, CT
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (9.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Roxbury, CT
- Average daylight in September: 12h and 3min
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 September: 8h and 2min
The months with the most sunshine are July and August (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in September
Roxbury, CT
- Average sunshine days in September: 14.2 days
The month with the most sunshine days is November (17 days).
The months with the least sunshine days are May and June (10.3 days).
Average UV index in September
Roxbury, 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
Roxbury, CT
- Average cloud cover in September: 40
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 36).
Average visibility in September
Roxbury, CT
- Average visibility in September: 5mi
The months with the highest visibility are April, October, November and December (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August and September (5mi).
Roxbury, Connecticut, USA
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