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
A modest decline in the average high-temperature is seen during September, decreasing from 84.7°F (29.3°C) in August to a still warm 78.1°F (25.6°C). During September, Cotton consistently records a temperature low averaging a mild 56.7°F (13.7°C).Humidity
In Cotton, the average relative humidity in September is 77%.Rainfall
September is the month with the least rainfall. Rain falls for 12 days and accumulates 1.61" (41mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In Cotton, West Virginia, the average length of the day in September is 12h and 25min.On the first day of the month, sunrise is at 6:55 am and sunset at 7:54 pm. On the last day of September, sunrise is at 7:20 am and sunset at 7:09 pm EDT.
Sunshine
In Cotton, West Virginia, the average sunshine in September is 8.3h.UV index
The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: In September, a regular UV index of 4 translates into these guidelines:
Put precautions into practice - Ensuring skin and eye safety is a necessity. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Cotton?
What is the average humidity in September?
What is the driest month?
How many days does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Cotton have in September?
What time are sunrise and sunset in September in Cotton?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
Cotton, WV
- Average high temperature in September: 78.1°F
The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is January (38.7°F).
- Average low temperature in September: 56.7°F
The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (25°F).
Average pressure in September
Cotton, 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 (29.97"Hg).
Average wind speed in September
Cotton, WV
- Average wind speed in September: 4.3mph
The windiest month (with the highest average wind speed) is February (6.6mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).
Average humidity in September
Cotton, WV
- Average humidity in September: 77%
The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is August (75%).
Average rainfall in September
Cotton, WV
- Average rainfall in September: 1.61"
The wettest month (with the highest rainfall) is May (3.98").
The driest month (with the least rainfall) is September (1.61").
Average rainfall days in September
Cotton, WV
- Average rainfall days in September: 12 days
The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is November (10.6 days).
Average snowfall in September
Cotton, WV
- Average snowfall in September: 0"
The month with the highest snowfall is January (3.46").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Cotton, WV
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (11.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Cotton, 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 2min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in September
Cotton, WV
- Average sunshine days in September: 15.6 days
The month with the most sunshine days is October (17.9 days).
The months with the least sunshine days are February and May (10.2 days).
Average UV index in September
Cotton, WV
- Average UV index in September: 4
The months with the highest UV index are May, 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
Cotton, WV
- Average cloud cover in September: 37
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Cotton, WV
- 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).
Cotton, West Virginia, USA
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