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
In Slab Fork, the beginning of September is marked by a marginally lowered average high-temperature, shifting from August's 81°F (27.2°C) to a still warm 75.4°F (24.1°C). Slab Fork encounters a steady low-temperature average of 54.1°F (12.3°C) throughout the month of September.Humidity
In Slab Fork, the average relative humidity in September is 79%.Rainfall
September is the month with the least rainfall. Rain falls for 16.7 days and accumulates 1.89" (48mm) 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 6:56 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 7:09 pm EDT.
Sunshine
The average sunshine in September is 8.4h.UV index
In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the average person.Note: The daily high UV index of 4 in September translates into this advice:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
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 Slab Fork?
When it does not snow?
Does it snow in September?
How many hours of daylight does Slab Fork have in September?
When are sunrise and sunset in September?
How many hours of sunshine does Slab Fork have in September?
What is the UV index intensity in September?
Average temperature in September
Slab Fork, WV
- Average high temperature in September: 75.4°F
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (37°F).
- Average low temperature in September: 54.1°F
The month with the highest average low temperature is July (60.1°F).
The coldest month (with the lowest average low temperature) is January (23.7°F).
Average pressure in September
Slab Fork, 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
Slab Fork, WV
- Average wind speed in September: 4.5mph
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 (4.2mph).
Average humidity in September
Slab Fork, WV
- Average humidity in September: 79%
The month with the highest relative humidity is February (83%).
The months with the lowest relative humidity are April, June, July, August and November (78%).
Average rainfall in September
Slab Fork, WV
- Average rainfall in September: 1.89"
The wettest month (with the highest rainfall) is May (3.94").
The driest month (with the least rainfall) is September (1.89").
Average rainfall days in September
Slab Fork, WV
- Average rainfall days in September: 16.7 days
The month with the highest number of rainy days is May (22.3 days).
The month with the least rainy days is November (11.4 days).
Average snowfall in September
Slab Fork, WV
- Average snowfall in September: 0"
The month with the highest snowfall is January (8.7").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Slab Fork, WV
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (15.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Slab Fork, 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 2min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in September
Slab Fork, WV
- Average sunshine days in September: 10.5 days
The month with the most sunshine days is November (15.1 days).
The month with the least sunshine days is May (7 days).
Average UV index in September
Slab Fork, 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
Slab Fork, WV
- Average cloud cover in September: 41
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 36).
Average visibility in September
Slab Fork, WV
- Average visibility in September: 4mi
The months with the highest visibility are March, April, May, June, July, August, October, November and December (5mi).
The months with the lowest visibility are January, February and September (4mi).
Slab Fork, West Virginia, USA
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