Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
The commencement of September includes a gentle temperature shift, with the average high-temperature dropping a bit from 80.6°F (27°C) in August to a still warm 74.8°F (23.8°C). Nighttime temperature in Swandale dips to a mean of 54.1°F (12.3°C) during September.Humidity
In Swandale, the average relative humidity in September is 79%.Rainfall
The month with the least rainfall in Swandale, West Virginia, is September, when the rain falls for 14.3 days and typically collects 1.69" (43mm) of precipitation.Snowfall
June through September are months without snowfall in Swandale.Daylight
In Swandale, the average length of the day in September is 12h and 25min.On the first day of the month, sunrise is at 6:53 am and sunset at 7:53 pm. On the last day of September, sunrise is at 7:19 am and sunset at 7:07 pm EDT.
Sunshine
In September, the average sunshine is 8.5h.UV index
In Swandale, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: A daily maximum UV index of 4 in September translates into the following instructions:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Frequently asked questions
What is the temperature in September in Swandale?
What is the average humidity in September in Swandale?
What is the driest month in Swandale?
How many days does it rain in September in Swandale?
When it does not snow in Swandale?
Does it snow in Swandale in September?
How many hours of daylight does Swandale have in September?
What time are sunrise and sunset in September in Swandale?
How long on average sun shines in September in Swandale?
How high is the UV index in September in Swandale?
Average temperature in September
Swandale, WV
- Average high temperature in September: 74.8°F
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (36.5°F).
- Average low temperature in September: 54.1°F
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (23.2°F).
Average pressure in September
Swandale, WV
- 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
Swandale, WV
- Average wind speed in September: 4.5mph
The windiest months (with the highest average wind speed) are January and February (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in September
Swandale, WV
- Average humidity in September: 79%
The months with the highest relative humidity are January and February (84%).
The months with the lowest relative humidity are June, July, August and November (78%).
Average rainfall in September
Swandale, WV
- Average rainfall in September: 1.69"
The wettest month (with the highest rainfall) is May (4.21").
The driest month (with the least rainfall) is September (1.69").
Average rainfall days in September
Swandale, WV
- Average rainfall days in September: 14.3 days
The month with the highest number of rainy days is May (23.3 days).
The month with the least rainy days is November (12.2 days).
Average snowfall in September
Swandale, WV
- Average snowfall in September: 0"
The month with the highest snowfall is January (8.94").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Swandale, WV
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (16.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Swandale, WV
- Average daylight in September: 12h and 2min
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 3min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in September
Swandale, WV
- Average sunshine days in September: 13.3 days
The month with the most sunshine days is October (14.6 days).
The month with the least sunshine days is May (6.1 days).
Average UV index in September
Swandale, WV
- Average UV index in September: 4
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Swandale, WV
- Average cloud cover in September: 39
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in September
Swandale, WV
- Average visibility in September: 5mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January and February (4mi).
Swandale, West Virginia, USA
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