September weather forecastStanley, VA
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Stanley, Virginia, with an average temperature ranging between max 75.9°F (24.4°C) and min 55.4°F (13°C).Temperature
A subtle shift in Stanley's weather is observed as August turns into September, with the average high temperature reducing from 82.9°F (28.3°C) to a still warm 75.9°F (24.4°C). Stanley experiences a mean low-temperature of 55.4°F (13°C) during September.Humidity
September and October, with an average relative humidity of 79%, are the most humid months.Rainfall
In Stanley, in September, during 10.6 rainfall days, 0.63" (16mm) of precipitation is typically accumulated. In Stanley, during the entire year, the rain falls for 116.3 days and collects up to 9.72" (247mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
The average length of the day in September is 12h and 25min.On the first day of September, sunrise is at 6:43 am and sunset at 7:43 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 6:57 pm EDT.
Sunshine
In September, the average sunshine is 8.4h.UV index
In Stanley, Virginia, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: The daily high UV index of 4 during September translates into the following recommendations:
Make use of precautions - Suggestions to resist sunburn are communicated. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Stanley, VA
- Average high temperature in September: 75.9°F
The warmest month (with the highest average high temperature) is July (85.1°F).
The month with the lowest average high temperature is January (38.8°F).
- Average low temperature in September: 55.4°F
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (23.7°F).
Average pressure in September
Stanley, VA
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in September
Stanley, VA
- Average wind speed in September: 4.5mph
The windiest month (with the highest average wind speed) is February (6.7mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).
Average humidity in September
Stanley, VA
- Average humidity in September: 79%
The months with the highest relative humidity are September and October (79%).
The month with the lowest relative humidity is July (74%).
Average rainfall in September
Stanley, VA
- Average rainfall in September: 0.63"
The wettest month (with the highest rainfall) is August (1.18").
The driest month (with the least rainfall) is January (0.51").
Average rainfall days in September
Stanley, VA
- Average rainfall days in September: 10.6 days
The month with the highest number of rainy days is May (13.1 days).
The month with the least rainy days is January (6.3 days).
Average snowfall in September
Stanley, VA
- Average snowfall in September: 0"
The month with the highest snowfall is March (0.91").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Stanley, VA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (4.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Stanley, VA
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in September: 8h and 24min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).
Average sunshine days in September
Stanley, VA
- Average sunshine days in September: 16.5 days
The month with the most sunshine days is November (21.8 days).
The month with the least sunshine days is May (14.4 days).
Average UV index in September
Stanley, VA
- Average UV index in September: 4
The months with the highest UV index are May, June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Stanley, VA
- Average cloud cover in September: 42
The month with the most cloud cover is March (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility in September
Stanley, VA
- Average visibility in September: 5mi
The months with the highest visibility are February, July and November (6mi).
The months with the lowest visibility are January, March, April, May, June, August, September, October and December (5mi).
