September weather forecastShepherdsville, KY
September
Weather in September
September brings the first signs of autumn to Shepherdsville, with a noticeable dip in temperature from August, ranging from 59.9°F (15.5°C) to 79.7°F (26.5°C). The days start to shorten, the greenery takes on a reddish tint, and cooler nights become more common. September is when Shepherdsville sheds its summer glory and readies itself for the colorful splendor of autumn. This is a month of transition as the town retreats from the scorching summer heat and prepares for the impending fall.Temperature
The shift from August to September includes a small decrease in the average high-temperature, from a tropical 86°F (30°C) to a moderately hot 79.7°F (26.5°C). An average low-temperature of 59.9°F (15.5°C) is common during the nights of September.Humidity
The months with the lowest humidity in Shepherdsville are August through October, with an average relative humidity of 74%.Rainfall
The month with the least rainfall in Shepherdsville is September, when the rain falls for 11.5 days and typically collects 1.22" (31mm) of precipitation.Snowfall
In Shepherdsville, snow does not fall in May through October.Daylight
In September, the average length of the day is 12h and 25min.On the first day of the month, sunrise is at 7:13 am and sunset at 8:11 pm. On the last day of September, sunrise is at 7:38 am and sunset at 7:26 pm EDT.
Sunshine
The average sunshine in September is 8.3h.UV index
The average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the average person.Note: A daily maximum UV index of 5 in September translates into the following instructions:
Exercise prevention - Warding off sunburn is urged. To guard against the harmful effects of the Sun, minimize exposure during midday. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Shepherdsville, KY
- Average high temperature in September: 79.7°F
The warmest month (with the highest average high temperature) is July (87.1°F).
The month with the lowest average high temperature is January (39.7°F).
- Average low temperature in September: 59.9°F
The month with the highest average low temperature is July (67.3°F).
The coldest month (with the lowest average low temperature) is January (26.2°F).
Average pressure in September
Shepherdsville, 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
Shepherdsville, KY
- Average wind speed in September: 5.3mph
The windiest months (with the highest average wind speed) are January and February (8mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in September
Shepherdsville, KY
- Average humidity in September: 74%
The months with the highest relative humidity are February and December (80%).
The months with the lowest relative humidity are August, September and October (74%).
Average rainfall in September
Shepherdsville, KY
- Average rainfall in September: 1.22"
The wettest month (with the highest rainfall) is April (2.48").
The driest month (with the least rainfall) is September (1.22").
Average rainfall days in September
Shepherdsville, KY
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is May (17.6 days).
The month with the least rainy days is January (8.2 days).
Average snowfall in September
Shepherdsville, KY
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.02").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Shepherdsville, KY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (5.5 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
Shepherdsville, KY
- Average daylight in September: 12h and 24min
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 18min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The months with the least sunshine are January and December (Average sunshine: 4h and 18min).
Average sunshine days in September
Shepherdsville, KY
- Average sunshine days in September: 16.7 days
The month with the most sunshine days is October (20.2 days).
The month with the least sunshine days is May (11.7 days).
Average UV index in September
Shepherdsville, 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, November and December (UV index 2).
Average cloud cover in September
Shepherdsville, KY
- Average cloud cover in September: 32
The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in September
Shepherdsville, 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).
