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 shift into September records an average high-temperature of a still warm 77.7°F (25.4°C), subtly varied from August's 82.9°F (28.3°C). Despite drastic daytime highs, Appalachia logs an average low-temperature reading of 55.4°F (13°C) throughout September.Humidity
In Appalachia, the average relative humidity in September is 78%.Rainfall
The month with the least rainfall is September, when the rain falls for 16.9 days and typically collects 2.44" (62mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
In Appalachia, the average length of the day in September is 12h and 24min.On the first day of September, sunrise is at 7:02 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 7:15 pm EDT.
Sunshine
In Appalachia, the average sunshine in September is 8.2h.UV index
The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: A daily maximum UV index of 4 in September translates into the following instructions:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. Around midday, solar radiation is most harmful; hence, exposure should be limited. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
What is the driest month?
How many days does it rain in September in Appalachia?
When it does not snow?
Does it snow in September?
How many hours of daylight does Appalachia have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Appalachia have in September?
How high is the UV index in September?
Average temperature in September
Appalachia, VA
- Average high temperature in September: 77.7°F
The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (40.5°F).
- Average low temperature in September: 55.4°F
The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is January (26.4°F).
Average pressure in September
Appalachia, VA
- 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
Appalachia, VA
- Average wind speed in September: 4mph
The windiest month (with the highest average wind speed) is April (6.6mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).
Average humidity in September
Appalachia, VA
- Average humidity in September: 78%
The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is November (76%).
Average rainfall in September
Appalachia, VA
- Average rainfall in September: 2.44"
The wettest month (with the highest rainfall) is February (4.33").
The driest month (with the least rainfall) is September (2.44").
Average rainfall days in September
Appalachia, VA
- Average rainfall days in September: 16.9 days
The months with the highest number of rainy days are May and July (20.8 days).
The month with the least rainy days is November (12.5 days).
Average snowfall in September
Appalachia, VA
- Average snowfall in September: 0"
The month with the highest snowfall is January (5.2").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Appalachia, VA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (10.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Appalachia, VA
- 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 42min).
- Average sunshine in September: 8h and 1min
The months with the most sunshine are June and August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days in September
Appalachia, VA
- Average sunshine days in September: 11.1 days
The month with the most sunshine days is November (14.9 days).
The months with the least sunshine days are May and July (8.3 days).
Average UV index in September
Appalachia, VA
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in September
Appalachia, VA
- Average cloud cover in September: 36
The month with the most cloud cover is February (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in September
Appalachia, VA
- Average visibility in September: 5mi
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).
Appalachia, Virginia, USA
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