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 onset of September aligns with a soft reduction in the average high-temperature, gently falling from a moderately hot 79.7°F (26.5°C) in August to a pleasant 72.9°F (22.7°C). An average nighttime temperature of 55.9°F (13.3°C) is witnessed in Clayville throughout September.Humidity
The average relative humidity in September is 78%.Rainfall
September is the month with the least rainfall. Rain falls for 13.1 days and accumulates 1.77" (45mm) of precipitation.Snowfall
In Clayville, snow does not fall in June through October.Daylight
The average length of the day in September is 12h and 28min.On the first day of September, sunrise is at 6:13 am and sunset at 7:19 pm. On the last day of the month, sunrise is at 6:43 am and sunset at 6:29 pm EDT.
Sunshine
In September, the average sunshine in Clayville is 8.4h.UV index
In Clayville, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 4 during September translates into the following directions:
Preventative actions are necessary - Recommendations to ward off sunburn are given. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature?
What is the average humidity in September?
What is the driest month?
How many days does it rain in September?
When it does not snow?
How many hours of daylight does Clayville have in September?
When are sunrise and sunset in September?
How long on average sun shines in September in Clayville?
What is the UV index intensity in September?
Average temperature in September
Clayville, RI
- Average high temperature in September: 72.9°F
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (34°F).
- Average low temperature in September: 55.9°F
The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (22.3°F).
Average pressure in September
Clayville, RI
- Average pressure in September: 30.06"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
Clayville, RI
- Average wind speed in September: 6.7mph
The windiest months (with the highest average wind speed) are January and March (9.4mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).
Average humidity in September
Clayville, RI
- Average humidity in September: 78%
The months with the highest relative humidity are February, June and July (79%).
The month with the lowest relative humidity is April (72%).
Average rainfall in September
Clayville, RI
- Average rainfall in September: 1.77"
The wettest month (with the highest rainfall) is December (3.39").
The driest month (with the least rainfall) is September (1.77").
Average rainfall days in September
Clayville, RI
- Average rainfall days in September: 13.1 days
The month with the highest number of rainy days is July (17.7 days).
The month with the least rainy days is January (8.3 days).
Average snowfall in September
Clayville, RI
- Average snowfall in September: 0"
The month with the highest snowfall is March (3.62").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in September
Clayville, RI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (7.7 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Clayville, RI
- 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 2min
The months with the most sunshine are July and August (Average sunshine: 10h and 18min).
The month with the least sunshine is December (Average sunshine: 4h and 42min).
Average sunshine days in September
Clayville, RI
- Average sunshine days in September: 14.8 days
The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is June (10.3 days).
Average UV index in September
Clayville, 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
Clayville, RI
- Average cloud cover in September: 37
The month with the most cloud cover is March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Clayville, RI
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, September, October, November and December (6mi).
The months with the lowest visibility are May, June, July and August (5mi).
Clayville, Rhode Island, USA
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