September weather forecastBoones Mill, VA
September
Weather in September
September, the first month of the autumn in Boones Mill, is still a warm month, with an average temperature varying between 56.3°F (13.5°C) and 77.9°F (25.5°C).Temperature
The transition into September involves a small decrease in the average high-temperature, dipping slightly from 84.4°F (29.1°C) in August to a still moderately hot 77.9°F (25.5°C). Boones Mill observes a distinct decrease from peak daytime temperatures, with an average low-temperature of 56.3°F (13.5°C) throughout the month of September.Humidity
May, September and December, with an average relative humidity of 77%, are the most humid months in Boones Mill.Rainfall
The month with the least rainfall in Boones Mill is September, when the rain falls for 12.9 days and typically collects 1.42" (36mm) of precipitation.Snowfall
May through October are months without snowfall in Boones Mill.Daylight
In Boones Mill, the average length of the day in September is 12h and 25min.On the first day of the month, sunrise is at 6:51 am and sunset at 7:48 pm. On the last day of September, sunrise is at 7:14 am and sunset at 7:04 pm EDT.
Sunshine
In Boones Mill, the average sunshine in September is 8.4h.UV index
The average daily maximum UV index in September in Boones Mill is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 5 in September interprets into the following recommendations:
Make use of precautions - Shielding skin and eyes from injury is a requirement. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. 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
Average temperature in September
Boones Mill, VA
- Average high temperature in September: 77.9°F
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (41.5°F).
- Average low temperature in September: 56.3°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 (26.4°F).
Average pressure in September
Boones Mill, VA
- Average pressure in September: 30.06"Hg
The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in September
Boones Mill, VA
- Average wind speed in September: 4.2mph
The windiest month (with the highest average wind speed) is February (6.9mph).
The calmest month (with the lowest average wind speed) is August (4mph).
Average humidity in September
Boones Mill, VA
- Average humidity in September: 77%
The months with the highest relative humidity are May, September and December (77%).
The month with the lowest relative humidity is July (72%).
Average rainfall in September
Boones Mill, VA
- Average rainfall in September: 1.42"
The wettest month (with the highest rainfall) is May (3.11").
The driest month (with the least rainfall) is September (1.42").
Average rainfall days in September
Boones Mill, VA
- Average rainfall days in September: 12.9 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is November (7 days).
Average snowfall in September
Boones Mill, VA
- Average snowfall in September: 0"
The month with the highest snowfall is March (2.05").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Boones Mill, VA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.6 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
Boones Mill, VA
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 8h and 24min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 5h and 24min).
Average sunshine days in September
Boones Mill, VA
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is November (21.9 days).
The month with the least sunshine days is May (10.7 days).
Average UV index in September
Boones Mill, VA
- Average UV index in September: 5
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Boones Mill, VA
- Average cloud cover in September: 40
The months with the most cloud cover are February and March (Cloud cover 44).
The months with the least cloud cover are June and July (Cloud cover 31).
Average visibility in September
Boones Mill, VA
- Average visibility in September: 5mi
The months with the highest visibility are March, April, June, July and November (6mi).
The months with the lowest visibility are January, February, May, August, September, October and December (5mi).
