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
September's arrival aligns with a minor decrease in average high-temperatures, from August's moderately hot 84.7°F (29.3°C) to a still warm 78.1°F (25.6°C). In Ryan, the nighttime temperature averages to a mild 56.7°F (13.7°C) during September.Humidity
The average relative humidity in September is 77%.Rainfall
The month with the least rainfall is September, when the rain falls for 12 days and typically collects 1.61" (41mm) of precipitation.Snowfall
In Ryan, snow does not fall in June through September.Daylight
In September, the average length of the day is 12h and 26min.On the first day of the month, sunrise is at 6:55 am and sunset at 7:55 pm. On the last day of September, sunrise is at 7:21 am and sunset at 7:09 pm EDT.
Sunshine
The average sunshine in September is 8.3h.UV index
In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: The maximum UV index, 4 during September, leads to the following recommendations:
Heed the precautions - It is counselled to guard against solar damage. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September?
What is the average humidity in September?
What is the driest month?
How much does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Ryan have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Ryan have in September?
How high is the UV index in September?
Average temperature in September
Ryan, 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
Ryan, 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
Ryan, 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
Ryan, 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
Ryan, 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
Ryan, 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
Ryan, 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
Ryan, 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
Ryan, 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
Ryan, 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
Ryan, 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
Ryan, 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
Ryan, 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).
Ryan, West Virginia, USA
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