September weather forecast and climate
Bayou, KY

September, the first month of the autumn, in Bayou, is also a moderately hot month, with temperature in the range of an average high of 81.5°F (27.5°C) and an average low of 61.7°F (16.5°C).

Temperature

In Bayou, the average high-temperature is almost the same as in August - a warm 81.5°F (27.5°C). In September, in Bayou, the average low-temperature is 61.7°F (16.5°C).

Heat index

The average heat index is calculated to 85.8°F (29.9°C). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'apparent temperature', 'real feel', or 'felt air temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. Additional factors like metabolic differences, clothing, pregnancy, and activity influence one's weather impression. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

In Bayou, the average relative humidity is 72%.

Rainfall

The month with the least rainfall in Bayou, Kentucky, is September when the rain falls for 11.1 days and typically collects 1.5" (38mm) of precipitation.

Snowfall

In Bayou snow does not fall in May through October.

Daylight

In September, the average length of the day in Bayou is 12.4h.

Sunshine

In Bayou, the average sunshine is 9.6h.

UV index

The average daily maximum UV index in Bayou, Kentucky, is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to the UV radiation for the average person.
Note: The daily maximum UV index of 5 interpret into the following advice:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

What is the temperature in September in Bayou?

In Bayou, in September, the average high-temperature is 81.5°F (27.5°C), and the average low-temperature is 61.7°F (16.5°C). In September, the average heat index (a.k.a. 'real feel', 'feels like'), that combines relative humidity and air temperature, is calculated to 85.8°F (29.9°C).

What is the average humidity in September in Bayou?

The average relative humidity in September is 72%.

How much does it rain in Bayou in September?

In September, the rain falls for 11.1 days. Throughout September, 1.5" (38mm) of precipitation is accumulated.

What is the driest month in Bayou?

The month with the least rainfall in Bayou is September when the rain falls for 11.1 days and typically collects 1.5" (38mm) of precipitation.

When it does not snow in Bayou?

In Bayou, Kentucky, snow does not fall in May through October.

How many hours of daylight does Bayou have in September?

In Bayou, Kentucky, the average length of the day in September is 12.4h.

How long on average sun shines in September in Bayou?

In Bayou, Kentucky, the average sunshine in September is 9.6h.

What is the UV index reading in September in Bayou?

In Bayou, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate health threat from unsafe exposure to the Sun's UV rays.
Average temperature in September - Bayou, KY
  • Average high temperature in September: 81.5°F

The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is January (41.4°F).

  • Average low temperature in September: 61.7°F

The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (28°F).

Average pressure in September - Bayou, KY
  • Average pressure in September: 30.03"

The month with the highest atmospheric pressure is January (30.17").
The month with the lowest atmospheric pressure is June (29.95").

Average wind speed in September - Bayou, KY
  • Average wind speed in September: 6.3mph

The windiest months (with the highest average wind speed) are January, March and April (8.9mph).
The calmest months (with the lowest average wind speed) are July and August (5.6mph).

Average humidity in September - Bayou, KY
  • Average humidity in September: 72%

Months with the highest relative humidity are March and May (79%).
The month with the lowest relative humidity is October (70%).

Average rainfall in September - Bayou, KY
  • Average rainfall in September: 1.5"

The wettest month (with the highest rainfall) is April (4.29").
The driest month (with the least rainfall) is September (1.5").

Average rainfall days in September - Bayou, KY
  • Average rainfall days in September: 11.1 days

The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is October (10.2 days).

Average snowfall in September - Bayou, KY
  • Average snowfall in September: 0"

The month with the highest snowfall is February (1.61").
Months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in September - Bayou, KY
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (4.3 days).
Months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in September / Average sunshine in September - Bayou, KY
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.7h).
The month with the shortest days is December (Average daylight: 9.6h).

  • Average sunshine in September: 9.6h

Months with the most sunshine are June and July (Average sunshine: 10.6h).
The month with the least sunshine is January (Average sunshine: 4.7h).

Average sunshine days in September - Bayou, KY
  • Average sunshine days in September: 16.9 days

The month with the most sunshine days is October (19.3 days).
The month with the least sunshine days is May (11 days).

Average UV index in September - Bayou, KY
  • Average UV index in September: 5

Months with the highest UV index are May, June, July and August (UV index 6).
Months with the lowest UV index are January, February and December (UV index 2).

Average cloud cover in September - Bayou, KY
  • Average cloud cover in September: 26

The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is September (Cloud cover 26).

Average visibility in September - Bayou, KY
  • Average visibility in September: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).