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
Peterstown's weather subtly changes with the onset of September, barely falling from 81.3°F (27.4°C) in August to a still moderately hot 74.7°F (23.7°C). Compared to daytime temperatures, Peterstown's temperature drops significantly, averaging a cool 52.7°F (11.5°C) during the nights of September.Humidity
In Peterstown, the average relative humidity in September is 80%.Rainfall
The month with the least rainfall is September, when the rain falls for 13.6 days and typically collects 1.34" (34mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September is 12h and 25min.On the first day of September, sunrise is at 6:54 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 7:07 pm EDT.
Sunshine
In Peterstown, West Virginia, the average sunshine in September is 8.2h.UV index
In September, the average daily maximum UV index in Peterstown, West Virginia, is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: In September, the maximum UV index of 4 suggests this advice:
Take precautions - Protection against sun damage is advised. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Peterstown?
What is the average humidity in September in Peterstown?
What is the driest month in Peterstown?
How much does it rain in Peterstown in September?
When it does not snow in Peterstown?
Does it snow in Peterstown in September?
How many hours of daylight does Peterstown have in September?
When is the sunrise / sunset in September in Peterstown?
How many hours of sunshine does Peterstown have in September?
What is the UV index intensity in September in Peterstown?
Average temperature in September
Peterstown, WV
- Average high temperature in September: 74.7°F
The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (38.1°F).
- Average low temperature in September: 52.7°F
The month with the highest average low temperature is July (59.4°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure in September
Peterstown, 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 (29.99"Hg).
Average wind speed in September
Peterstown, WV
- Average wind speed in September: 4.4mph
The windiest months (with the highest average wind speed) are January and February (7.5mph).
The calmest month (with the lowest average wind speed) is August (4mph).
Average humidity in September
Peterstown, WV
- Average humidity in September: 80%
The months with the highest relative humidity are February and December (81%).
The months with the lowest relative humidity are June, July and November (77%).
Average rainfall in September
Peterstown, WV
- Average rainfall in September: 1.34"
The wettest month (with the highest rainfall) is May (2.8").
The driest month (with the least rainfall) is September (1.34").
Average rainfall days in September
Peterstown, WV
- Average rainfall days in September: 13.6 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is October (8.8 days).
Average snowfall in September
Peterstown, WV
- Average snowfall in September: 0"
The month with the highest snowfall is January (3.43").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Peterstown, WV
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (7.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Peterstown, WV
- Average daylight in September: 12h and 2min
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 36min).
- Average sunshine in September: 8h and 1min
The months with the most sunshine are June and July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).
Average sunshine days in September
Peterstown, WV
- Average sunshine days in September: 13.9 days
The month with the most sunshine days is October (20.1 days).
The month with the least sunshine days is May (10.7 days).
Average UV index in September
Peterstown, WV
- Average UV index in September: 4
The months with the highest UV index are June 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
Peterstown, WV
- Average cloud cover in September: 44
The months with the most cloud cover are January and February (Cloud cover 56).
The months with the least cloud cover are June and July (Cloud cover 38).
Average visibility in September
Peterstown, WV
- Average visibility in September: 4mi
The months with the highest visibility are January, February, March, April, May, June, July, August, October, November and December (5mi).
The month with the lowest visibility is September (4mi).
Peterstown, West Virginia, USA
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