September weather forecastHerron Hill, KY
September
Weather in September
The first month of the autumn, September, is still a warm month in Herron Hill, Kentucky, with an average temperature ranging between min 57°F (13.9°C) and max 78.3°F (25.7°C).Temperature
The arrival of September signals a subtle shift in temperature, down from a warm 84.9°F (29.4°C) in August to a still moderately hot 78.3°F (25.7°C). An average minimum temperature of 57°F (13.9°C) is recorded during the month of September.Humidity
In September, the average relative humidity is 76%.Rainfall
September is the month with the least rainfall. Rain falls for 12.8 days and accumulates 1.85" (47mm) of precipitation.Snowfall
In Herron Hill, snow does not fall in May through September.Daylight
The average length of the day in September is 12h and 25min.On the first day of the month, sunrise is at 7:03 am and sunset at 8:03 pm. On the last day of September, sunrise is at 7:29 am and sunset at 7:17 pm EDT.
Sunshine
In Herron Hill, the average sunshine in September is 8.3h.UV index
In Herron Hill, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for average individuals.Note: A daily maximum UV index of 4 in September translates into the following instructions:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Herron Hill, KY
- Average high temperature in September: 78.3°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (37.8°F).
- Average low temperature in September: 57°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure in September
Herron Hill, KY
- Average pressure in September: 30.04"Hg
The months with the highest atmospheric pressure are January and November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in September
Herron Hill, KY
- Average wind speed in September: 5.1mph
The windiest month (with the highest average wind speed) is January (7.9mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in September
Herron Hill, KY
- Average humidity in September: 76%
The months with the highest relative humidity are February and December (81%).
The month with the lowest relative humidity is August (75%).
Average rainfall in September
Herron Hill, KY
- Average rainfall in September: 1.85"
The wettest month (with the highest rainfall) is April (3.27").
The driest month (with the least rainfall) is September (1.85").
Average rainfall days in September
Herron Hill, KY
- Average rainfall days in September: 12.8 days
The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is November (11.2 days).
Average snowfall in September
Herron Hill, KY
- Average snowfall in September: 0"
The month with the highest snowfall is January (2.91").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Herron Hill, KY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (10.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Herron Hill, 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 30min).
- Average sunshine in September: 8h and 18min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in September
Herron Hill, KY
- Average sunshine days in September: 15.7 days
The months with the most sunshine days are October and November (16.6 days).
The month with the least sunshine days is February (9.7 days).
Average UV index in September
Herron Hill, 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
Herron Hill, KY
- Average cloud cover in September: 34
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in September
Herron Hill, KY
- Average visibility in September: 5mi
The months with the highest visibility are March, April, October and November (6mi).
The months with the lowest visibility are January, February, May, June, July, August, September and December (5mi).
