September weather forecast
Cayce, KY

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Weather in September

September, the first month of the autumn in Cayce, is still a warm month, with an average temperature ranging between max 81.7°F (27.6°C) and min 62.2°F (16.8°C).

Temperature

Transitioning from August to September, Cayce observes an average high-temperature of a warm 81.7°F (27.6°C), differing subtly from the previous month. Cayce experiences a mean low-temperature of 62.2°F (16.8°C) during September.

Heat index

For most parts of September, the heat index is calculated to be a tropical 86°F (30°C). If one continues to be active during enduring exposure, it could result in fatigue and heat cramps.
Take note of the fact that heat index values are based on shaded circumstances with light airflows. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.

Humidity

In September, the average relative humidity is 73%.

Rainfall

September is the month with the least rainfall. Rain falls for 12.1 days and accumulates 1.54" (39mm) of precipitation.

Snowfall

April through October are months without snowfall in Cayce.

Daylight

In September, the average length of the day is 12h and 24min.
On the first day of September, sunrise is at 6:28 am and sunset at 7:23 pm. On the last day of the month, sunrise is at 6:51 am and sunset at 6:40 pm CDT.

Sunshine

The average sunshine in September is 9.5h.

UV index

The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: A maximum UV index of 5 in September translates into the following recommendations:
Take care. Persons with lighter skin might suffer burns 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. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Updated: Jul 25, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in September?

The high-temperature in Cayce during September is 81.7°F (27.6°C) and the low-temperature is 62.2°F (16.8°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines air temperature and relative humidity, in September is calculated to be 86°F (30°C).

What is the average humidity in September?

The average relative humidity in September is 73%.

What is the driest month?

The month with the least rainfall in Cayce is September, when the rain falls for 12.1 days and typically collects 1.54" (39mm) of precipitation.

How much does it rain in September?

In Cayce, in September, during 12.1 rainfall days, 1.54" (39mm) of precipitation is typically accumulated.

When it does not snow?

April through October are months without snowfall in Cayce.

What is the average length of the day in September?

The average day length in September in Cayce is 12h and 24min.

When are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 6:28 am and sunset at 7:23 pm. On the last day of the month, sunrise is at 6:51 am and sunset at 6:40 pm CDT.

How long on average sun shines in September?

In Cayce, the average sunshine duration in September is 9.5h.

What is the UV index intensity in September?

The average daily maximum UV index in September in Cayce is 5. A UV Index value of 3 to 5 symbolizes a moderate health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Cayce, KY

Average temperature in September - Cayce, KY
  • Average high temperature in September: 81.7°F

The warmest month (with the highest average high temperature) is July (87.8°F).
The month with the lowest average high temperature is January (42.8°F).

  • Average low temperature in September: 62.2°F

The month with the highest average low temperature is July (70.3°F).
The coldest month (with the lowest average low temperature) is January (30°F).

Average pressure in September
Cayce, KY

Average pressure in September - Cayce, KY
  • Average pressure in September: 30.02"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in September
Cayce, KY

Average wind speed in September - Cayce, KY
  • Average wind speed in September: 6.4mph

The windiest month (with the highest average wind speed) is February (9.4mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).

Average humidity in September
Cayce, KY

Average humidity in September - Cayce, KY
  • Average humidity in September: 73%

The months with the highest relative humidity are March and May (79%).
The month with the lowest relative humidity is October (69%).

Average rainfall in September
Cayce, KY

Average rainfall in September - Cayce, KY
  • Average rainfall in September: 1.54"

The wettest month (with the highest rainfall) is April (4.53").
The driest month (with the least rainfall) is September (1.54").

Average rainfall days in September
Cayce, KY

Average rainfall days in September - Cayce, KY
  • Average rainfall days in September: 12.1 days

The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is November (10.1 days).

Average snowfall in September
Cayce, KY

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

The months with the highest snowfall are February and March (1.54").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in September
Cayce, KY

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

The month with the highest number of snowfall days is January (3.7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in September /
Average sunshine in September
Cayce, KY

Average daylight in September / Average sunshine in September - Cayce, KY
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).

  • Average sunshine in September: 9h and 3min

The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

Average sunshine days in September
Cayce, KY

Average sunshine days in September - Cayce, KY
  • Average sunshine days in September: 15.8 days

The month with the most sunshine days is October (18.8 days).
The month with the least sunshine days is April (12.2 days).

Average UV index in September
Cayce, KY

Average UV index in September - Cayce, 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
Cayce, KY

Average cloud cover in September - Cayce, KY
  • Average cloud cover in September: 27

The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is June (Cloud cover 25).

Average visibility in September
Cayce, KY

Average visibility in September - Cayce, 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).

Cayce, Kentucky, USA

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