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 minor decrease in the average high-temperature is observed during September, shifting from 85.5°F (29.7°C) in August to a still warm 79°F (26.1°C). Mercers Bottom's nighttime temperature in September drops to an average of 57.7°F (14.3°C).Humidity
The average relative humidity in September in Mercers Bottom is 76%.Rainfall
September is the month with the least rainfall in Mercers Bottom, West Virginia. Rain falls for 12.4 days and accumulates 1.77" (45mm) of precipitation.Snowfall
In Mercers Bottom, snow does not fall in May through September.Daylight
In September, the average length of the day in Mercers Bottom is 12h and 26min.On the first day of September in Mercers Bottom, 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 Mercers Bottom is 8.2h.UV index
In Mercers Bottom, West Virginia, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the ordinary person.Note: During September, 4 as the daily maximum UV index converts into the following advice:
Adopt protective measures - It is advised to guard against sun damage. Around midday, solar radiation is most harmful; hence, exposure should be limited. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Mercers Bottom?
What is the average humidity in September in Mercers Bottom?
What is the driest month in Mercers Bottom?
How many days does it rain in September in Mercers Bottom?
When it does not snow in Mercers Bottom?
Does it snow in Mercers Bottom in September?
How many hours of daylight does Mercers Bottom have in September?
When is the sunrise / sunset in September in Mercers Bottom?
How long on average sun shines in September in Mercers Bottom?
What is the UV index reading in September in Mercers Bottom?
Average temperature in September
Mercers Bottom, WV
- Average high temperature in September: 79°F
The warmest month (with the highest average high temperature) is July (86.4°F).
The month with the lowest average high temperature is January (38.7°F).
- Average low temperature in September: 57.7°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).
Average pressure in September
Mercers Bottom, WV
- Average pressure in September: 30.05"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
Mercers Bottom, WV
- Average wind speed in September: 4.5mph
The windiest months (with the highest average wind speed) are January and February (6.7mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in September
Mercers Bottom, WV
- Average humidity in September: 76%
The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is August (74%).
Average rainfall in September
Mercers Bottom, WV
- Average rainfall in September: 1.77"
The wettest month (with the highest rainfall) is May (3.9").
The driest month (with the least rainfall) is September (1.77").
Average rainfall days in September
Mercers Bottom, WV
- Average rainfall days in September: 12.4 days
The month with the highest number of rainy days is May (19.8 days).
The month with the least rainy days is November (10.1 days).
Average snowfall in September
Mercers Bottom, WV
- Average snowfall in September: 0"
The month with the highest snowfall is January (4.29").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Mercers Bottom, WV
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Mercers Bottom, 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 1min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in September
Mercers Bottom, WV
- Average sunshine days in September: 15.1 days
The month with the most sunshine days is November (17.4 days).
The month with the least sunshine days is May (8.6 days).
Average UV index in September
Mercers Bottom, 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
Mercers Bottom, WV
- Average cloud cover in September: 37
The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in September
Mercers Bottom, 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).
Mercers Bottom, West Virginia, USA
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