September weather forecastFlatwoods, KY
September
Weather in September
September ushers in the beginning of autumn in Flatwoods, with a significant drop in average temperatures, from 85.6°F (29.8°C) in August to 79.3°F (26.3°C). The first signs of fall become apparent with shorter days and cooler temperatures. The drier climate signals the arrival of autumn, with decreased rainfall and temperature drops. The weather in September carries the transition from the hot summer days to the cooler, drier atmosphere of fall.Temperature
The arrival of September corresponds with a light shift in temperature, down from 85.6°F (29.8°C) in August to a still moderately hot 79.3°F (26.3°C). September nights experience a consistent temperature drop to a moderate 58.1°F (14.5°C).Humidity
In Flatwoods, the average relative humidity in September is 75%.Rainfall
In Flatwoods, in September, during 10.4 rainfall days, 1.22" (31mm) of precipitation is typically accumulated. Throughout the year, there are 146.5 rainfall days, and 19.65" (499mm) of precipitation is accumulated.Snowfall
In Flatwoods, 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 September, sunrise is at 7:00 am and sunset at 8:00 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 7:14 pm EDT.
Sunshine
In September, the average sunshine in Flatwoods is 8.1h.UV index
The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for average individuals.Note: In September, the average maximum UV index of 4 translates into the following recommendations:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Flatwoods, KY
- Average high temperature in September: 79.3°F
The warmest month (with the highest average high temperature) is July (87.3°F).
The month with the lowest average high temperature is January (38.7°F).
- Average low temperature in September: 58.1°F
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).
Average pressure in September
Flatwoods, KY
- 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
Flatwoods, KY
- Average wind speed in September: 4.7mph
The windiest months (with the highest average wind speed) are January and February (6.9mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in September
Flatwoods, 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
Flatwoods, KY
- Average rainfall in September: 1.22"
The wettest month (with the highest rainfall) is May (2.05").
The driest month (with the least rainfall) is November (1.06").
Average rainfall days in September
Flatwoods, KY
- Average rainfall days in September: 10.4 days
The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is November (8.4 days).
Average snowfall in September
Flatwoods, KY
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.13").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Flatwoods, KY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (9.7 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
Flatwoods, 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 6min
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 48min).
Average sunshine days in September
Flatwoods, KY
- Average sunshine days in September: 17.4 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is February (11.1 days).
Average UV index in September
Flatwoods, 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 and December (UV index 2).
Average cloud cover in September
Flatwoods, KY
- Average cloud cover in September: 36
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in September
Flatwoods, KY
- Average visibility in September: 5mi
The months with the highest visibility are April, October and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September and December (5mi).
