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 arrival of September correlates with a minor temperature reduction, down from August's warm 85.5°F (29.7°C) to a still moderately hot 79°F (26.1°C). An average low-temperature of 57.7°F (14.3°C) is recorded during the nights in September in Henderson.Humidity
In Henderson, the average relative humidity in September is 75%.Rainfall
September is the month with the least rainfall in Henderson. Rain falls for 12.3 days and accumulates 1.57" (40mm) of precipitation.Snowfall
In Henderson, snow does not fall in May through October.Daylight
In Henderson, West Virginia, the average length of the day in September is 12h and 26min.On the first day of September in Henderson, sunrise is at 6:58 am and sunset at 7:58 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 7:12 pm EDT.
Sunshine
The average sunshine in September in Henderson is 8.3h.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: In September, the UV index of 4 transforms into the following advice:
Act with care - The need to guard against sun damage is communicated. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Frequently asked questions
What is the usual temperature for Henderson in September?
What is the average humidity in September in Henderson?
What is the driest month in Henderson?
How many days does it rain in September in Henderson?
When it does not snow in Henderson?
What is the average length of the day in September in Henderson?
When are sunrise and sunset in September in Henderson?
How long on average sun shines in September in Henderson?
What is the UV index intensity in September in Henderson?
Average temperature in September
Henderson, WV
- Average high temperature in September: 79°F
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (37.9°F).
- Average low temperature in September: 57.7°F
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure in September
Henderson, WV
- Average pressure in September: 30.05"Hg
The months with the highest atmospheric pressure are January and November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in September
Henderson, WV
- Average wind speed in September: 4.8mph
The windiest month (with the highest average wind speed) is February (7mph).
The calmest month (with the lowest average wind speed) is August (4.4mph).
Average humidity in September
Henderson, WV
- Average humidity in September: 75%
The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is August (74%).
Average rainfall in September
Henderson, WV
- Average rainfall in September: 1.57"
The wettest month (with the highest rainfall) is May (3.27").
The driest month (with the least rainfall) is September (1.57").
Average rainfall days in September
Henderson, WV
- Average rainfall days in September: 12.3 days
The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is November (10.1 days).
Average snowfall in September
Henderson, WV
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.09").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Henderson, WV
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (11.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Henderson, 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 30min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in September
Henderson, WV
- Average sunshine days in September: 15.2 days
The month with the most sunshine days is October (18.2 days).
The month with the least sunshine days is February (9.2 days).
Average UV index in September
Henderson, 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
Henderson, WV
- Average cloud cover in September: 35
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in September
Henderson, WV
- Average visibility in September: 5mi
The months with the highest visibility are April, June and November (6mi).
The months with the lowest visibility are January, February, March, May, July, August, September, October and December (5mi).
Henderson, West Virginia, USA
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