September weather forecastShannondale, WV
September
Weather in September
The first month of the autumn, September, is still a warm month in Shannondale, West Virginia, with an average temperature ranging between min 56.8°F (13.8°C) and max 77°F (25°C).Temperature
The onset of September aligns with a soft reduction in the average high-temperature, gently falling from 84°F (28.9°C) in August to a still warm 77°F (25°C). The temperature lowers to an average of 56.8°F (13.8°C) during September nights.Humidity
In September, the average relative humidity is 77%.Rainfall
The month with the least rainfall is September, when the rain falls for 12.1 days and typically collects 1.89" (48mm) of precipitation.Snowfall
In Shannondale, snow does not fall in June through October.Daylight
In September, the average length of the day is 12h and 26min.On the first day of the month, sunrise is at 6:40 am and sunset at 7:41 pm. On the last day of September, sunrise is at 7:07 am and sunset at 6:54 pm EDT.
Sunshine
The average sunshine in September is 8.9h.UV index
In Shannondale, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: The average daily UV index of 4 in September transforms into the following instructions:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Stay sun-safe with clothing that is both closely woven and worn loosely.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Shannondale, WV
- Average high temperature in September: 77°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 (37.9°F).
- Average low temperature in September: 56.8°F
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (24.1°F).
Average pressure in September
Shannondale, 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
Shannondale, WV
- Average wind speed in September: 4.8mph
The windiest month (with the highest average wind speed) is March (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in September
Shannondale, WV
- Average humidity in September: 77%
The months with the highest relative humidity are May, October and December (78%).
The month with the lowest relative humidity is July (73%).
Average rainfall in September
Shannondale, WV
- Average rainfall in September: 1.89"
The wettest months (with the highest rainfall) are May, July and August (3.15").
The driest month (with the least rainfall) is September (1.89").
Average rainfall days in September
Shannondale, WV
- Average rainfall days in September: 12.1 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is January (9.2 days).
Average snowfall in September
Shannondale, WV
- Average snowfall in September: 0"
The month with the highest snowfall is January (4.17").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in September
Shannondale, WV
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (7.8 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
Shannondale, 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 30min).
- Average sunshine in September: 8h and 54min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The months with the least sunshine are January, February and December (Average sunshine: 5h and 6min).
Average sunshine days in September
Shannondale, WV
- Average sunshine days in September: 15.2 days
The month with the most sunshine days is November (19 days).
The month with the least sunshine days is May (11.2 days).
Average UV index in September
Shannondale, 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
Shannondale, WV
- Average cloud cover in September: 37
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in September
Shannondale, WV
- Average visibility in September: 5mi
The months with the highest visibility are February, March, April, June, July, August, November and December (6mi).
The months with the lowest visibility are January, May, September and October (5mi).
