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 start of September comes with a small reduction in the average high-temperature, subtly receding from 84.4°F (29.1°C) in August to a still moderately hot 78.3°F (25.7°C). In Willow, the September nights cool down to an average low of 58.5°F (14.7°C).Humidity
In Willow, the average relative humidity in September is 75%.Rainfall
The month with the least rainfall in Willow is September, when the rain falls for 13.3 days and typically collects 1.61" (41mm) of precipitation.Snowfall
In Willow, snow does not fall in May through October.Daylight
The average length of the day in September in Willow is 12h and 26min.On the first day of the month, sunrise is at 7:06 am and sunset at 8:06 pm. On the last day of September, in Willow, Kentucky, sunrise is at 7:32 am and sunset at 7:20 pm EDT.
Sunshine
In September, the average sunshine is 8.3h.UV index
In September, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: A maximum high UV index of 5 in September translates into the following recommendations:
Take necessary precautions - Protection from skin and eye injury is mandatory. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature?
What is the average humidity in September?
What is the driest month?
How much does it rain in September?
When it does not snow?
What is the average length of the day in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Willow have in September?
What is the UV index intensity in September?
Average temperature in September
Willow, KY
- Average high temperature in September: 78.3°F
The warmest month (with the highest average high temperature) is July (85.3°F).
The month with the lowest average high temperature is January (37.4°F).
- Average low temperature in September: 58.5°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (24.4°F).
Average pressure in September
Willow, KY
- Average pressure in September: 30.03"Hg
The months with the highest atmospheric pressure are January and November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in September
Willow, KY
- Average wind speed in September: 5.6mph
The windiest month (with the highest average wind speed) is January (8.6mph).
The calmest months (with the lowest average wind speed) are July and August (5mph).
Average humidity in September
Willow, 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
Willow, KY
- Average rainfall in September: 1.61"
The wettest month (with the highest rainfall) is May (3.03").
The driest month (with the least rainfall) is September (1.61").
Average rainfall days in September
Willow, KY
- Average rainfall days in September: 13.3 days
The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is November (9.8 days).
Average snowfall in September
Willow, KY
- Average snowfall in September: 0"
The month with the highest snowfall is January (1.89").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Willow, KY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.4 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
Willow, KY
- Average daylight in September: 12h and 2min
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 2min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in September
Willow, KY
- Average sunshine days in September: 15.1 days
The month with the most sunshine days is October (18.1 days).
The month with the least sunshine days is May (10.8 days).
Average UV index in September
Willow, KY
- Average UV index in September: 5
The months with the highest UV index are June, July 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
Willow, KY
- Average cloud cover in September: 33
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in September
Willow, KY
- Average visibility in September: 6mi
The months with the highest visibility are January, March, April, June, August, September, October, November and December (6mi).
The months with the lowest visibility are February, May and July (5mi).
Willow, Kentucky, USA
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