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
As August shifts into September, a minor alteration in temperatures is observed, with average highs reducing from 81.5°F (27.5°C) to a still moderately hot 75.7°F (24.3°C). Lyonsville experiences a significant reduction from daytime highs with an average low-temperature of 54.1°F (12.3°C) in September.Humidity
The average relative humidity in September is 79%.Rainfall
The month with the least rainfall in Lyonsville is September, when the rain falls for 15.1 days and typically collects 1.54" (39mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day in Lyonsville, West Virginia, is 12h and 25min.On the first day of the month, sunrise is at 6:54 am and sunset at 7:53 pm. On the last day of September, sunrise is at 7:19 am and sunset at 7:08 pm EDT.
Sunshine
In Lyonsville, the average sunshine in September is 8.3h.UV index
The average daily maximum UV index in September in Lyonsville is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: An average UV index of 4 in September transforms into this advice:
Make use of precautions - Shielding skin and eyes from injury is a requirement. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Frequently asked questions
What are the temperatures in Lyonsville in September?
What is the average humidity in September in Lyonsville?
What is the driest month in Lyonsville?
How many days does it rain in September in Lyonsville?
When it does not snow in Lyonsville?
Does it snow in Lyonsville in September?
What is the average length of the day in September in Lyonsville?
What time are sunrise and sunset in September in Lyonsville?
How long on average sun shines in September in Lyonsville?
How high is the UV index in September in Lyonsville?
Average temperature in September
Lyonsville, WV
- Average high temperature in September: 75.7°F
The warmest month (with the highest average high temperature) is July (82.2°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 (60.6°F).
The coldest month (with the lowest average low temperature) is January (24.1°F).
Average pressure in September
Lyonsville, 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
Lyonsville, WV
- Average wind speed in September: 4.5mph
The windiest month (with the highest average wind speed) is February (7.2mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in September
Lyonsville, WV
- Average humidity in September: 79%
The month with the highest relative humidity is February (84%).
The month with the lowest relative humidity is June (77%).
Average rainfall in September
Lyonsville, WV
- Average rainfall in September: 1.54"
The wettest month (with the highest rainfall) is May (3.35").
The driest month (with the least rainfall) is September (1.54").
Average rainfall days in September
Lyonsville, WV
- Average rainfall days in September: 15.1 days
The month with the highest number of rainy days is May (20.4 days).
The month with the least rainy days is November (11 days).
Average snowfall in September
Lyonsville, WV
- Average snowfall in September: 0"
The month with the highest snowfall is January (5.59").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Lyonsville, WV
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (14.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Lyonsville, 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 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: 3h and 48min).
Average sunshine days in September
Lyonsville, WV
- Average sunshine days in September: 12.3 days
The month with the most sunshine days is October (16.5 days).
The month with the least sunshine days is January (8.4 days).
Average UV index in September
Lyonsville, WV
- 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, November and December (UV index 2).
Average cloud cover in September
Lyonsville, WV
- Average cloud cover in September: 40
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in September
Lyonsville, 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).
Lyonsville, West Virginia, USA
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