September weather forecastShepherdstown, WV
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Shepherdstown, West Virginia, with an average temperature fluctuating between 56.7°F (13.7°C) and 76.8°F (24.9°C).Temperature
The start of September signals a gentle decrease in the average high-temperature, transitioning from a warm 83.8°F (28.8°C) in August to a still moderately hot 76.8°F (24.9°C). Shepherdstown anticipates an average minimum temperature of 56.7°F (13.7°C) in the month of September.Humidity
In September, the average relative humidity is 77%.Rainfall
In September, the rain falls for 14.5 days. Throughout September, 2.24" (57mm) of precipitation is accumulated. Throughout the year, there are 169.2 rainfall days, and 32.6" (828mm) of precipitation is accumulated.Snowfall
June through October are months without snowfall.Daylight
In Shepherdstown, West Virginia, the average length of the day in September is 12h and 26min.On the first day of September, sunrise is at 6:40 am and sunset at 7:41 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 6:54 pm EDT.
Sunshine
In September, the average sunshine is 8.9h.UV index
In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the ordinary person.Note: In September, the maximum UV index of 4 translates into these guidelines:
Exercise prevention - Protecting skin and eyes from harm is required. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Shepherdstown, WV
- Average high temperature in September: 76.8°F
The warmest month (with the highest average high temperature) is July (86.4°F).
The month with the lowest average high temperature is January (37°F).
- Average low temperature in September: 56.7°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).
Average pressure in September
Shepherdstown, WV
- Average pressure in September: 30.06"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in September
Shepherdstown, WV
- Average wind speed in September: 4.9mph
The windiest months (with the highest average wind speed) are January, February, March and April (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in September
Shepherdstown, WV
- Average humidity in September: 77%
The months with the highest relative humidity are May, October and December (78%).
The months with the lowest relative humidity are April and July (74%).
Average rainfall in September
Shepherdstown, WV
- Average rainfall in September: 2.24"
The wettest months (with the highest rainfall) are May and July (3.54").
The driest month (with the least rainfall) is January (2.13").
Average rainfall days in September
Shepherdstown, WV
- Average rainfall days in September: 14.5 days
The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is January (9.1 days).
Average snowfall in September
Shepherdstown, WV
- Average snowfall in September: 0"
The month with the highest snowfall is January (3.86").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in September
Shepherdstown, WV
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (7.1 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
Shepherdstown, WV
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in September: 8h and 54min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).
Average sunshine days in September
Shepherdstown, WV
- Average sunshine days in September: 12.8 days
The month with the most sunshine days is November (18.8 days).
The month with the least sunshine days is May (9.9 days).
Average UV index in September
Shepherdstown, WV
- Average UV index in September: 4
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
Shepherdstown, WV
- Average cloud cover in September: 37
The months with the most cloud cover are March and December (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in September
Shepherdstown, WV
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, June, July, August, November and December (6mi).
The months with the lowest visibility are May, September and October (5mi).
