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 is marked by a subtle drop in average high-temperatures, transitioning from a moderately hot 84.7°F (29.3°C) in August to a still warm 79°F (26.1°C). Clementsville witnesses a consistent average low-temperature of 59.7°F (15.4°C) throughout September.Humidity
In September, the average relative humidity in Clementsville is 76%.Rainfall
September is the month with the least rainfall. Rain falls for 9.9 days and accumulates 0.59" (15mm) of precipitation.Snowfall
In Clementsville, snow does not fall in May through September.Daylight
In Clementsville, the average length of the day in September is 12h and 25min.On the first day of the month, sunrise is at 7:11 am and sunset at 8:08 pm. On the last day of September, sunrise is at 7:35 am and sunset at 7:24 pm EDT.
Sunshine
In Clementsville, the average sunshine in September is 8.3h.UV index
The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the average person.Note: In September, the maximum UV index of 5 suggests these recommendations:
Exercise caution. Those with pale skin may experience burns in less than half an hour. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Clementsville?
What is the average humidity in September in Clementsville?
What is the driest month in Clementsville?
How many days does it rain in September in Clementsville?
When it does not snow in Clementsville?
Does it snow in Clementsville in September?
What is the average length of the day in September in Clementsville?
When are sunrise and sunset in September in Clementsville?
How long on average sun shines in September in Clementsville?
How high is the UV index in September in Clementsville?
Average temperature in September
Clementsville, KY
- Average high temperature in September: 79°F
The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is January (40.5°F).
- Average low temperature in September: 59.7°F
The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (27.3°F).
Average pressure in September
Clementsville, KY
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in September
Clementsville, KY
- Average wind speed in September: 5.2mph
The windiest months (with the highest average wind speed) are January and February (8.3mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in September
Clementsville, KY
- Average humidity in September: 76%
The months with the highest relative humidity are February and December (80%).
The month with the lowest relative humidity is October (75%).
Average rainfall in September
Clementsville, KY
- Average rainfall in September: 0.59"
The wettest month (with the highest rainfall) is July (1.57").
The driest month (with the least rainfall) is September (0.59").
Average rainfall days in September
Clementsville, KY
- Average rainfall days in September: 9.9 days
The month with the highest number of rainy days is July (14.4 days).
The month with the least rainy days is January (7.3 days).
Average snowfall in September
Clementsville, KY
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.35").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Clementsville, KY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.3 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
Clementsville, KY
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 42min).
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 June (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days in September
Clementsville, KY
- Average sunshine days in September: 17.4 days
The month with the most sunshine days is November (21.2 days).
The month with the least sunshine days is July (13.3 days).
Average UV index in September
Clementsville, KY
- Average UV index in September: 5
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
Clementsville, KY
- Average cloud cover in September: 33
The months with the most cloud cover are January and February (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in September
Clementsville, KY
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, June, August, October, November and December (6mi).
The months with the lowest visibility are May, July and September (5mi).
Clementsville, Kentucky, USA
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