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 marks a gentle change in average high-temperature, declining from August's warm 84.6°F (29.2°C) to a still moderately hot 78.3°F (25.7°C). Sylvandell reports an average nighttime low-temperature of 58.6°F (14.8°C) in September.Humidity
The average relative humidity in September is 75%.Rainfall
The month with the least rainfall in Sylvandell is September, when the rain falls for 12.1 days and typically collects 1.34" (34mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
In Sylvandell, the average length of the day in September is 12h and 25min.On the first day of September, sunrise is at 7:06 am and sunset at 8:06 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 7:20 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 medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: An average maximum UV index of 4 in September leads to these recommendations:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. To cut down UV radiation exposure by about half, sport 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?
What is the average humidity in September?
What is the driest month?
How many days does it rain in September?
When it does not snow?
How many hours of daylight does Sylvandell have in September?
When is the sunrise / sunset in September in Sylvandell?
How many hours of sunshine does Sylvandell have in September?
How high is the UV index in September?
Average temperature in September
Sylvandell, KY
- Average high temperature in September: 78.3°F
The warmest month (with the highest average high temperature) is July (85.5°F).
The month with the lowest average high temperature is January (38.3°F).
- Average low temperature in September: 58.6°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).
Average pressure in September
Sylvandell, KY
- Average pressure in September: 30.03"Hg
The months with the highest atmospheric pressure are January and November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in September
Sylvandell, KY
- Average wind speed in September: 5.7mph
The windiest month (with the highest average wind speed) is January (8.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).
Average humidity in September
Sylvandell, KY
- Average humidity in September: 75%
The months with the highest relative humidity are February and December (81%).
The month with the lowest relative humidity is August (74%).
Average rainfall in September
Sylvandell, KY
- Average rainfall in September: 1.34"
The wettest month (with the highest rainfall) is May (2.56").
The driest month (with the least rainfall) is September (1.34").
Average rainfall days in September
Sylvandell, KY
- Average rainfall days in September: 12.1 days
The month with the highest number of rainy days is July (16.3 days).
The month with the least rainy days is November (8.8 days).
Average snowfall in September
Sylvandell, KY
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.73").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Sylvandell, KY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.3 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
Sylvandell, KY
- 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 months with the most sunshine are June and August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in September
Sylvandell, KY
- Average sunshine days in September: 16.5 days
The month with the most sunshine days is October (19.1 days).
The month with the least sunshine days is February (11.8 days).
Average UV index in September
Sylvandell, KY
- 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, November and December (UV index 2).
Average cloud cover in September
Sylvandell, KY
- Average cloud cover in September: 33
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in September
Sylvandell, KY
- Average visibility in September: 6mi
The months with the highest visibility are March, April, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, May and July (5mi).
Sylvandell, Kentucky, USA
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