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
As September arrives, Custer's weather displays a minor decrease in high-temperatures, transitioning from August's 85.8°F (29.9°C) to a still warm 79.7°F (26.5°C). The temperature dips to an average of 60.1°F (15.6°C) during September nights.Humidity
The average relative humidity in September is 75%.Rainfall
September is the month with the least rainfall. Rain falls for 9.8 days and accumulates 0.51" (13mm) of precipitation.Snowfall
In Custer, snow does not fall in May through October.Daylight
In September, the average length of the day is 12h and 25min.On the first day of September, sunrise is at 6:15 am and sunset at 7:13 pm. On the last day of the month, sunrise is at 6:40 am and sunset at 6:29 pm CDT.
Sunshine
The average sunshine in September is 8.6h.UV index
In September, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: The daily maximum UV index of 5 in September interprets into the following advice:
Undertake protective steps - Preventing sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
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?
What time are sunrise and sunset in September?
How many hours of sunshine does Custer have in September?
How high is the UV index in September?
Average temperature in September
Custer, KY
- Average high temperature in September: 79.7°F
The warmest month (with the highest average high temperature) is July (86.9°F).
The month with the lowest average high temperature is January (39.7°F).
- Average low temperature in September: 60.1°F
The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (26.6°F).
Average pressure in September
Custer, 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 (29.95"Hg).
Average wind speed in September
Custer, KY
- Average wind speed in September: 5.4mph
The windiest month (with the highest average wind speed) is February (8.1mph).
The calmest months (with the lowest average wind speed) are July and August (5mph).
Average humidity in September
Custer, KY
- Average humidity in September: 75%
The months with the highest relative humidity are February and December (80%).
The month with the lowest relative humidity is October (74%).
Average rainfall in September
Custer, KY
- Average rainfall in September: 0.51"
The wettest month (with the highest rainfall) is April (1.73").
The driest month (with the least rainfall) is September (0.51").
Average rainfall days in September
Custer, KY
- Average rainfall days in September: 9.8 days
The month with the highest number of rainy days is May (15.7 days).
The month with the least rainy days is October (8.1 days).
Average snowfall in September
Custer, KY
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.79").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Custer, KY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (4.8 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
Custer, 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 36min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 18min).
Average sunshine days in September
Custer, KY
- Average sunshine days in September: 18.4 days
The month with the most sunshine days is October (21.2 days).
The month with the least sunshine days is May (12.6 days).
Average UV index in September
Custer, 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
Custer, KY
- Average cloud cover in September: 32
The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in September
Custer, 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).
Custer, Kentucky, USA
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