September weather forecastMount Storm, WV
September
Weather in September
September, the first month of the autumn in Mount Storm, is still a pleasant month, with an average temperature ranging between max 71.1°F (21.7°C) and min 51.4°F (10.8°C).Temperature
In the transition to September, Mount Storm observes a minor drop in the average high-temperature, shifting from a moderately hot 77.2°F (25.1°C) in August to a pleasant 71.1°F (21.7°C). Nighttime temperature in Mount Storm lowers to an average of 51.4°F (10.8°C) in September.Humidity
In Mount Storm, West Virginia, the average relative humidity in September is 81%.Rainfall
September is the month with the least rainfall. Rain falls for 17.1 days and accumulates 2.32" (59mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In Mount Storm, the average length of the day in September is 12h and 26min.On the first day of the month, sunrise is at 6:46 am and sunset at 7:47 pm. On the last day of September, sunrise is at 7:12 am and sunset at 7:00 pm EDT.
Sunshine
In September, the average sunshine is 8.3h.UV index
In Mount Storm, West Virginia, the average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: The daily high UV index of 3 during September translates into the following recommendations:
Act with care - Obligation to protect against skin and eye damage is highlighted. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Mount Storm, WV
- Average high temperature in September: 71.1°F
The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (32.7°F).
- Average low temperature in September: 51.4°F
The month with the highest average low temperature is July (58.3°F).
The coldest month (with the lowest average low temperature) is January (19.6°F).
Average pressure in September
Mount Storm, 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 (29.96"Hg).
Average wind speed in September
Mount Storm, WV
- Average wind speed in September: 4.8mph
The windiest month (with the highest average wind speed) is January (8.9mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).
Average humidity in September
Mount Storm, WV
- Average humidity in September: 81%
The months with the highest relative humidity are January and February (85%).
The months with the lowest relative humidity are June and July (78%).
Average rainfall in September
Mount Storm, WV
- Average rainfall in September: 2.32"
The wettest month (with the highest rainfall) is May (4.21").
The driest month (with the least rainfall) is September (2.32").
Average rainfall days in September
Mount Storm, WV
- Average rainfall days in September: 17.1 days
The month with the highest number of rainy days is May (22.9 days).
The month with the least rainy days is February (10.3 days).
Average snowfall in September
Mount Storm, WV
- Average snowfall in September: 0"
The month with the highest snowfall is January (11.73").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Mount Storm, WV
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (18.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Mount Storm, 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 18min
The months with the most sunshine are July and August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in September
Mount Storm, WV
- Average sunshine days in September: 11 days
The month with the most sunshine days is October (12.5 days).
The month with the least sunshine days is May (6.1 days).
Average UV index in September
Mount Storm, WV
- Average UV index in September: 3
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Mount Storm, WV
- Average cloud cover in September: 45
The month with the most cloud cover is January (Cloud cover 64).
The months with the least cloud cover are July and August (Cloud cover 40).
Average visibility in September
Mount Storm, WV
- Average visibility in September: 4mi
The months with the highest visibility are April, May, June, July, August, October and November (5mi).
The months with the lowest visibility are January, February, March, September and December (4mi).
