September weather forecastRockbridge, KY
September
Weather in September
September, the first month of the autumn in Rockbridge, is also a moderately hot month, with an average temperature fluctuating between 79.7°F (26.5°C) and 60.3°F (15.7°C).Temperature
September signifies a gentle decline in Rockbridge's average high-temperature, easing from a moderately hot 85.5°F (29.7°C) in August to a still warm 79.7°F (26.5°C). Nighttime temperatures hover around an average low of 60.3°F (15.7°C) in September.Humidity
In September, the average relative humidity is 77%.Rainfall
September is the month with the least rainfall. Rain falls for 14.5 days and accumulates 2.4" (61mm) of precipitation.Snowfall
In Rockbridge, snow does not fall in May through September.Daylight
In Rockbridge, the average length of the day in September is 12h and 24min.On the first day of the month, sunrise is at 6:14 am and sunset at 7:10 pm. On the last day of September, sunrise is at 6:37 am and sunset at 6:27 pm CDT.
Sunshine
In September, the average sunshine is 8.3h.UV index
In Rockbridge, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum daily UV index of 5 during September translates into the following directions:
Be vigilant - A duty to shield skin and eyes from injury exists. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Rockbridge, KY
- Average high temperature in September: 79.7°F
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (42.1°F).
- Average low temperature in September: 60.3°F
The month with the highest average low temperature is July (66.9°F).
The coldest month (with the lowest average low temperature) is January (28.8°F).
Average pressure in September
Rockbridge, 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
Rockbridge, KY
- Average wind speed in September: 4.8mph
The windiest month (with the highest average wind speed) is February (8mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).
Average humidity in September
Rockbridge, KY
- Average humidity in September: 77%
The month with the highest relative humidity is December (80%).
The months with the lowest relative humidity are April, October and November (76%).
Average rainfall in September
Rockbridge, KY
- Average rainfall in September: 2.4"
The wettest months (with the highest rainfall) are February and July (4.25").
The driest month (with the least rainfall) is September (2.4").
Average rainfall days in September
Rockbridge, KY
- Average rainfall days in September: 14.5 days
The month with the highest number of rainy days is July (19.4 days).
The month with the least rainy days is November (11.2 days).
Average snowfall in September
Rockbridge, KY
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.4").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Rockbridge, KY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (6.7 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
Rockbridge, KY
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 8h and 18min
The months with the most sunshine are June and August (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).
Average sunshine days in September
Rockbridge, KY
- Average sunshine days in September: 13.9 days
The month with the most sunshine days is November (16.7 days).
The month with the least sunshine days is July (9.5 days).
Average UV index in September
Rockbridge, 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
Rockbridge, KY
- Average cloud cover in September: 32
The month with the most cloud cover is February (Cloud cover 55).
The months with the least cloud cover are June and August (Cloud cover 30).
Average visibility in September
Rockbridge, KY
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, June, September, October, November and December (6mi).
The months with the lowest visibility are January, May, July and August (5mi).
