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 transition into September subtly indicates a reduction in the average high-temperature, down to an agreeable 71.2°F (21.8°C) from August's warm 77.5°F (25.3°C). Perryville records an average low of 59.9°F (15.5°C) throughout the nights in September.Humidity
In September, the average relative humidity in Perryville is 78%.Rainfall
September is the month with the least rainfall. Rain falls for 11.5 days and accumulates 1.5" (38mm) of precipitation.Snowfall
April through November are months without snowfall in Perryville.Daylight
The average length of the day in September is 12h and 28min.On the first day of September in Perryville, sunrise is at 6:13 am and sunset at 7:18 pm. On the last day of the month, sunrise is at 6:42 am and sunset at 6:29 pm EDT.
Sunshine
In September, the average sunshine is 8.8h.UV index
In Perryville, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the average person.Note: An average maximum UV index of 4 in September leads to these recommendations:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Frequently asked questions
What are September temperatures in Perryville?
What is the average humidity in September in Perryville?
What is the driest month in Perryville?
How many days does it rain in September in Perryville?
When it does not snow in Perryville?
How many hours of daylight does Perryville have in September?
When are sunrise and sunset in September in Perryville?
How long on average sun shines in September in Perryville?
What is the UV index intensity in September in Perryville?
Average temperature in September
Perryville, RI
- Average high temperature in September: 71.2°F
The warmest months (with the highest average high temperature) are July and August (77.5°F).
The month with the lowest average high temperature is January (36.7°F).
- Average low temperature in September: 59.9°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 (26.8°F).
Average pressure in September
Perryville, RI
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Perryville, RI
- Average wind speed in September: 9.4mph
The windiest month (with the highest average wind speed) is January (12.6mph).
The calmest month (with the lowest average wind speed) is August (8.4mph).
Average humidity in September
Perryville, RI
- Average humidity in September: 78%
The month with the highest relative humidity is June (82%).
The months with the lowest relative humidity are March, April and November (74%).
Average rainfall in September
Perryville, RI
- Average rainfall in September: 1.5"
The wettest month (with the highest rainfall) is December (3.35").
The driest month (with the least rainfall) is September (1.5").
Average rainfall days in September
Perryville, RI
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is July (16.5 days).
The month with the least rainy days is January (7.3 days).
Average snowfall in September
Perryville, RI
- Average snowfall in September: 0"
The month with the highest snowfall is March (2.13").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Perryville, RI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (5.3 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
Perryville, RI
- 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 5min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in September
Perryville, RI
- Average sunshine days in September: 16.2 days
The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is July (12.2 days).
Average UV index in September
Perryville, 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, November and December (UV index 2).
Average cloud cover in September
Perryville, RI
- Average cloud cover in September: 33
The month with the most cloud cover is March (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in September
Perryville, 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).
Perryville, Rhode Island, USA
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