September weather forecastLetcher, KY
September
Weather in September
September, the first month of the autumn in Letcher, is still a warm month, with an average temperature varying between 77.2°F (25.1°C) and 55.6°F (13.1°C).Temperature
With the arrival of September, Letcher notices a mild change in the average high-temperature, sliding from August's 82.8°F (28.2°C) to a still warm 77.2°F (25.1°C). Letcher's September nights represent a significant downturn from the day's heat, with an average temperature of 55.6°F (13.1°C).Humidity
In September, the average relative humidity is 78%.Rainfall
The month with the least rainfall is September, when the rain falls for 16.3 days and typically collects 2.48" (63mm) of precipitation.Snowfall
In Letcher, Kentucky, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 25min.On the first day of September in Letcher, sunrise is at 7:03 am and sunset at 8:00 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 7:16 pm EDT.
Sunshine
In Letcher, the average sunshine in September is 8.1h.UV index
In Letcher, Kentucky, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.Note: An average maximum UV index of 4 in September leads to these recommendations:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Letcher, KY
- Average high temperature in September: 77.2°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (40.1°F).
- Average low temperature in September: 55.6°F
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (26.4°F).
Average pressure in September
Letcher, KY
- Average pressure in September: 30.05"Hg
The months with the highest atmospheric pressure are January and November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).
Average wind speed in September
Letcher, KY
- Average wind speed in September: 4.2mph
The windiest month (with the highest average wind speed) is April (6.7mph).
The calmest month (with the lowest average wind speed) is August (3.9mph).
Average humidity in September
Letcher, KY
- Average humidity in September: 78%
The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is November (76%).
Average rainfall in September
Letcher, KY
- Average rainfall in September: 2.48"
The wettest month (with the highest rainfall) is February (4.13").
The driest month (with the least rainfall) is September (2.48").
Average rainfall days in September
Letcher, KY
- Average rainfall days in September: 16.3 days
The months with the highest number of rainy days are May and July (20.8 days).
The month with the least rainy days is February (12.6 days).
Average snowfall in September
Letcher, KY
- Average snowfall in September: 0"
The month with the highest snowfall is January (5").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Letcher, KY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (11.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Letcher, KY
- Average daylight in September: 12h and 24min
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 42min).
- Average sunshine in September: 8h and 6min
The month with the most sunshine is June (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in September
Letcher, KY
- Average sunshine days in September: 12.2 days
The month with the most sunshine days is November (15.1 days).
The month with the least sunshine days is May (8 days).
Average UV index in September
Letcher, KY
- Average UV index in September: 4
The months with the highest UV index are May, June 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
Letcher, KY
- Average cloud cover in September: 37
The month with the most cloud cover is February (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in September
Letcher, KY
- Average visibility in September: 5mi
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).
