September weather forecastSummit, KY
September
Weather in September
September, the first month of the autumn in Summit, is also a moderately hot month, with an average temperature fluctuating between 60.3°F (15.7°C) and 79.7°F (26.5°C).Temperature
September ushers in a minute temperature change, with average high-temperatures reducing from August's warm 85.5°F (29.7°C) to a still moderately hot 79.7°F (26.5°C). September nights in Summit, Kentucky, experience a consistent temperature drop to a mild 60.3°F (15.7°C).Humidity
In Summit, Kentucky, the average relative humidity in September is 75%.Rainfall
September is the month with the least rainfall in Summit. Rain falls for 12.5 days and accumulates 1.69" (43mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
In September, the average length of the day in Summit is 12h and 25min.On the first day of September in Summit, sunrise is at 7:15 am and sunset at 8:12 pm. On the last day of the month, sunrise is at 7:39 am and sunset at 7:28 pm EDT.
Sunshine
The average sunshine in September in Summit is 8.5h.UV index
In Summit, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: The UV index of 5 in September translates into these instructions:
Act with care - Obligation to protect against skin and eye damage is highlighted. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Summit, KY
- Average high temperature in September: 79.7°F
The warmest month (with the highest average high temperature) is July (86.7°F).
The month with the lowest average high temperature is January (40.6°F).
- Average low temperature in September: 60.3°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 (27.3°F).
Average pressure in September
Summit, KY
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in September
Summit, KY
- Average wind speed in September: 5.6mph
The windiest month (with the highest average wind speed) is February (8.5mph).
The calmest month (with the lowest average wind speed) is July (5.1mph).
Average humidity in September
Summit, KY
- Average humidity in September: 75%
The month with the highest relative humidity is February (80%).
The month with the lowest relative humidity is October (74%).
Average rainfall in September
Summit, KY
- Average rainfall in September: 1.69"
The wettest month (with the highest rainfall) is April (3.11").
The driest month (with the least rainfall) is September (1.69").
Average rainfall days in September
Summit, KY
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is November (9.8 days).
Average snowfall in September
Summit, KY
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.97").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Summit, KY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (6.6 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
Summit, 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 36min).
- Average sunshine in September: 8h and 30min
The months with the most sunshine are June and August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in September
Summit, KY
- Average sunshine days in September: 15.2 days
The months with the most sunshine days are October and November (18.5 days).
The month with the least sunshine days is July (10.7 days).
Average UV index in September
Summit, 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 and December (UV index 2).
Average cloud cover in September
Summit, KY
- Average cloud cover in September: 32
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in September
Summit, KY
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and May (5mi).
