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
September signifies a minor drop in average high-temperature, transitioning from a warm 80.8°F (27.1°C) in August to an agreeable 73°F (22.8°C). In the month of September, Forestdale records a consistent average low-temperature of 55.2°F (12.9°C).Humidity
In September, the average relative humidity is 78%.Rainfall
September is the month with the least rainfall in Forestdale. Rain falls for 11.6 days and accumulates 1.3" (33mm) of precipitation.Snowfall
In Forestdale, snow does not fall in June through September.Daylight
In September, the average length of the day is 12h and 28min.On the first day of the month, sunrise is at 6:12 am and sunset at 7:19 pm. On the last day of September, sunrise is at 6:42 am and sunset at 6:29 pm EDT.
Sunshine
In September, the average sunshine is 8h.UV index
In Forestdale, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The UV index of 4 during September leads to these advisories:
Take precautions. Light skin individuals may get burned in less than 30 minutes. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Forestdale in September?
What is the average humidity in September in Forestdale?
What is the driest month in Forestdale?
How many days does it rain in September in Forestdale?
When it does not snow in Forestdale?
Does it snow in Forestdale in September?
How many hours of daylight does Forestdale have in September?
What time are sunrise and sunset in September in Forestdale?
How many hours of sunshine does Forestdale have in September?
How high is the UV index in September in Forestdale?
Average temperature in September
Forestdale, RI
- Average high temperature in September: 73°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (33.4°F).
- Average low temperature in September: 55.2°F
The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (21.4°F).
Average pressure in September
Forestdale, RI
- Average pressure in September: 30.06"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
Forestdale, RI
- Average wind speed in September: 6.5mph
The windiest month (with the highest average wind speed) is March (9.2mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in September
Forestdale, RI
- Average humidity in September: 78%
The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is April (71%).
Average rainfall in September
Forestdale, RI
- Average rainfall in September: 1.3"
The wettest month (with the highest rainfall) is April (2.83").
The driest month (with the least rainfall) is September (1.3").
Average rainfall days in September
Forestdale, RI
- Average rainfall days in September: 11.6 days
The month with the highest number of rainy days is June (15.3 days).
The months with the least rainy days are January and February (7.9 days).
Average snowfall in September
Forestdale, RI
- Average snowfall in September: 0"
The month with the highest snowfall is March (3.66").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Forestdale, RI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (7.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Forestdale, 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 0min
The month with the most sunshine is August (Average sunshine: 9h and 54min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).
Average sunshine days in September
Forestdale, RI
- Average sunshine days in September: 16.5 days
The month with the most sunshine days is November (18 days).
The month with the least sunshine days is June (12.5 days).
Average UV index in September
Forestdale, 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
Forestdale, RI
- Average cloud cover in September: 42
The months with the most cloud cover are February and March (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 37).
Average visibility in September
Forestdale, RI
- 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).
Forestdale, Rhode Island, USA
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