Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
The beginning of September subtly marks a decrease in the average high-temperature, transitioning from a warm 85.5°F (29.7°C) in August to a still moderately hot 79.5°F (26.4°C). September brings an average low-temperature of 59°F (15°C) to Acorn.Humidity
In September, the average relative humidity in Acorn is 76%.Rainfall
September is the month with the least rainfall. Rain falls for 13.2 days and accumulates 2.2" (56mm) of precipitation.Snowfall
In Acorn, 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 7:08 am and sunset at 8:05 pm. On the last day of September, sunrise is at 7:32 am and sunset at 7:21 pm EDT.
Sunshine
The average sunshine in September in Acorn is 8.3h.UV index
The average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.Note: In September, the maximum UV index of 5 suggests these recommendations:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Frequently asked questions
What are September temperatures in Acorn?
What is the average humidity in September in Acorn?
What is the driest month in Acorn?
How many days does it rain in September in Acorn?
When it does not snow in Acorn?
Does it snow in Acorn in September?
How many hours of daylight does Acorn have in September?
What time are sunrise and sunset in September in Acorn?
How long on average sun shines in September in Acorn?
How high is the UV index in September in Acorn?
Average temperature in September
Acorn, KY
- Average high temperature in September: 79.5°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 (41.5°F).
- Average low temperature in September: 59°F
The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is January (27.5°F).
Average pressure in September
Acorn, 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 (29.97"Hg).
Average wind speed in September
Acorn, KY
- Average wind speed in September: 4.7mph
The windiest month (with the highest average wind speed) is February (7.4mph).
The calmest month (with the lowest average wind speed) is August (4.4mph).
Average humidity in September
Acorn, KY
- Average humidity in September: 76%
The months with the highest relative humidity are February and December (80%).
The month with the lowest relative humidity is August (75%).
Average rainfall in September
Acorn, KY
- Average rainfall in September: 2.2"
The wettest month (with the highest rainfall) is February (4.09").
The driest month (with the least rainfall) is September (2.2").
Average rainfall days in September
Acorn, KY
- Average rainfall days in September: 13.2 days
The month with the highest number of rainy days is July (18 days).
The month with the least rainy days is January (11.2 days).
Average snowfall in September
Acorn, KY
- Average snowfall in September: 0"
The month with the highest snowfall is February (3.58").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Acorn, KY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.8 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
Acorn, KY
- Average daylight in September: 12h and 2min
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 2min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in September
Acorn, KY
- Average sunshine days in September: 15.1 days
The month with the most sunshine days is October (16.6 days).
The months with the least sunshine days are February and July (10.1 days).
Average UV index in September
Acorn, 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
Acorn, KY
- Average cloud cover in September: 33
The months with the most cloud cover are January and February (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in September
Acorn, KY
- Average visibility in September: 5mi
The months with the highest visibility are April, June, October and November (6mi).
The months with the lowest visibility are January, February, March, May, July, August, September and December (5mi).
Acorn, Kentucky, USA
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