September weather forecastDunn Corner, RI
September
Weather in September
The first month of the autumn, September, is also an agreeable month in Dunn Corner, Rhode Island, with an average temperature varying between 60.4°F (15.8°C) and 71.2°F (21.8°C).Temperature
The shift from August to September coincides with a small decrease in the average high-temperature, down to an agreeable 71.2°F (21.8°C) from a warm 77.5°F (25.3°C). An average low-temperature of 60.4°F (15.8°C) marks the nights throughout September.Humidity
In Dunn Corner, the average relative humidity in September is 78%.Rainfall
September is the month with the least rainfall. Rain falls for 12.9 days and accumulates 1.73" (44mm) of precipitation.Snowfall
In Dunn Corner, snow does not fall in May through October.Daylight
In Dunn Corner, the average length of the day in September is 12h and 28min.On the first day of the month, sunrise is at 6:14 am and sunset at 7:19 pm. On the last day of September, sunrise is at 6:43 am and sunset at 6:30 pm EDT.
Sunshine
In Dunn Corner, the average sunshine in September is 9h.UV index
The average daily maximum UV index in September in Dunn Corner is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: In September, a regular UV index of 4 translates into these guidelines:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Dunn Corner, RI
- Average high temperature in September: 71.2°F
The warmest month (with the highest average high temperature) is July (77.7°F).
The month with the lowest average high temperature is January (36.7°F).
- Average low temperature in September: 60.4°F
The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (27°F).
Average pressure in September
Dunn Corner, RI
- 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
Dunn Corner, RI
- Average wind speed in September: 9.4mph
The windiest month (with the highest average wind speed) is January (12.5mph).
The calmest months (with the lowest average wind speed) are July and August (8.3mph).
Average humidity in September
Dunn Corner, RI
- Average humidity in September: 78%
The months with the highest relative humidity are June and July (81%).
The months with the lowest relative humidity are March and November (74%).
Average rainfall in September
Dunn Corner, RI
- Average rainfall in September: 1.73"
The wettest month (with the highest rainfall) is December (3.39").
The driest month (with the least rainfall) is September (1.73").
Average rainfall days in September
Dunn Corner, RI
- Average rainfall days in September: 12.9 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is January (8.6 days).
Average snowfall in September
Dunn Corner, RI
- Average snowfall in September: 0"
The month with the highest snowfall is March (1.85").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Dunn Corner, RI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (5.6 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Dunn Corner, RI
- Average daylight in September: 12h and 30min
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: 9h and 0min
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 September
Dunn Corner, RI
- Average sunshine days in September: 14.9 days
The month with the most sunshine days is November (18.3 days).
The month with the least sunshine days is July (11 days).
Average UV index in September
Dunn Corner, RI
- 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 and December (UV index 2).
Average cloud cover in September
Dunn Corner, RI
- Average cloud cover in September: 32
The months with the most cloud cover are March and December (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in September
Dunn Corner, RI
- Average visibility in September: 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).
