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
With the onset of September, Saint Charles's average high-temperature clocks in at a still moderately hot 80.2°F (26.8°C), showing a minor fluctuation from the previous month. Saint Charles experiences a consistent average temperature of 61.3°F (16.3°C) throughout the nights in September.Humidity
In Saint Charles, the average relative humidity in September is 74%.Rainfall
September is the month with the least rainfall in Saint Charles. Rain falls for 8.7 days and accumulates 0.47" (12mm) of precipitation.Snowfall
In Saint Charles, snow does not fall in April through October.Daylight
In September, the average length of the day in Saint Charles is 12h and 25min.On the first day of the month, sunrise is at 6:21 am and sunset at 7:18 pm. On the last day of September, in Saint Charles, sunrise is at 6:45 am and sunset at 6:34 pm CDT.
Sunshine
In September, the average sunshine is 9.1h.UV index
In September, the average daily maximum UV index in Saint Charles is 5. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the ordinary person.Note: In September, the average maximum UV index of 5 translates into the following recommendations:
Take measures. Individuals with light skin might experience burns in under 30 minutes. Around midday, solar radiation is most harmful; hence, exposure should be limited. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Saint Charles?
What is the average humidity in September in Saint Charles?
What is the driest month in Saint Charles?
How much does it rain in Saint Charles in September?
When it does not snow in Saint Charles?
How many hours of daylight does Saint Charles have in September?
What time are sunrise and sunset in September in Saint Charles?
How long on average sun shines in September in Saint Charles?
What is the UV index intensity in September in Saint Charles?
Average temperature in September
Saint Charles, KY
- Average high temperature in September: 80.2°F
The warmest month (with the highest average high temperature) is July (86.4°F).
The month with the lowest average high temperature is January (41.2°F).
- Average low temperature in September: 61.3°F
The month with the highest average low temperature is July (68.4°F).
The coldest month (with the lowest average low temperature) is January (28°F).
Average pressure in September
Saint Charles, KY
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in September
Saint Charles, KY
- Average wind speed in September: 6.2mph
The windiest month (with the highest average wind speed) is February (9.4mph).
The calmest month (with the lowest average wind speed) is July (5.5mph).
Average humidity in September
Saint Charles, KY
- Average humidity in September: 74%
The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Saint Charles, KY
- Average rainfall in September: 0.47"
The wettest month (with the highest rainfall) is April (1.34").
The driest month (with the least rainfall) is September (0.47").
Average rainfall days in September
Saint Charles, KY
- Average rainfall days in September: 8.7 days
The month with the highest number of rainy days is May (13.4 days).
The month with the least rainy days is January (6.9 days).
Average snowfall in September
Saint Charles, KY
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.31").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Saint Charles, KY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (2.9 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
Saint Charles, 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: 9h and 1min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).
Average sunshine days in September
Saint Charles, KY
- Average sunshine days in September: 18.4 days
The month with the most sunshine days is October (21.7 days).
The month with the least sunshine days is May (14.1 days).
Average UV index in September
Saint Charles, 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
Saint Charles, KY
- Average cloud cover in September: 28
The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is June (Cloud cover 27).
Average visibility in September
Saint Charles, KY
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Saint Charles, Kentucky, USA
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