September weather forecast
Perryville, AR

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Perryville, Arkansas, with an average temperature varying between 63°F (17.2°C) and 84.4°F (29.1°C).

Temperature

Perryville's September weather shows a modest shift in high-temperatures, falling from August's hot 90.9°F (32.7°C) to a moderately hot 84.4°F (29.1°C). Perryville reports a consistent average low-temperature of 63°F (17.2°C) throughout September nights.

Heat index

The heat index for September is calculated to be a hot 93.2°F (34°C). Undertake additional precautions, heat cramps and heat exhaustion could happen. Heatstroke could occur from sustained activity.
Be aware that heat index ratings are designed for shaded locations and minor breezes. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', quantifies the warmth felt when relative humidity is considered. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.

Humidity

In September, the average relative humidity is 73%.

Rainfall

The month with the least rainfall is September, when the rain falls for 11.4 days and typically collects 1.93" (49mm) of precipitation.

Snowfall

In Perryville, Arkansas, snow does not fall in April through October.

Daylight

The average length of the day in September is 12h and 23min.
On the first day of September in Perryville, sunrise is at 6:44 am and sunset at 7:37 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 6:56 pm CDT.

Sunshine

The average sunshine in September is 9.7h.

UV index

The average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for the average person.
Note: The UV index of 6 during September translates into the following guidance:
Inhibit overexposure. Warding off sun damage is of utmost importance. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Updated: Jun 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in September?

An average high-temperature, in September, in Perryville, is 84.4°F (29.1°C) and the average low-temperature is 63°F (17.2°C). In September, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, is calculated to be 93.2°F (34°C).

What is the average humidity in September?

In Perryville, the average relative humidity in September is 73%.

What is the driest month?

The month with the least rainfall is September, when the rain falls for 11.4 days and typically collects 1.93" (49mm) of precipitation.

How many days does it rain in September?

In September, the rain falls for 11.4 days. Throughout September, 1.93" (49mm) of precipitation is accumulated.

When it does not snow?

April through October are months without snowfall.

What is the average length of the day in September?

In September, the average day length is 12h and 23min.

What time are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 6:44 am and sunset at 7:37 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 6:56 pm CDT.

How many hours of sunshine does Perryville have in September?

The average sunshine duration in September is 9.7h.

What is the UV index reading in September?

In Perryville, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to Sun's UV rays.
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
Perryville, AR

Average temperature in September - Perryville, AR
  • Average high temperature in September: 84.4°F

The warmest month (with the highest average high temperature) is July (91.9°F).
The month with the lowest average high temperature is January (47.7°F).

  • Average low temperature in September: 63°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 (32°F).

Average pressure in September
Perryville, AR

Average pressure in September - Perryville, AR
  • Average pressure in September: 30.01"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
Perryville, AR

Average wind speed in September - Perryville, AR
  • Average wind speed in September: 4.7mph

The windiest month (with the highest average wind speed) is April (7mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).

Average humidity in September
Perryville, AR

Average humidity in September - Perryville, AR
  • Average humidity in September: 73%

The month with the highest relative humidity is March (79%).
The months with the lowest relative humidity are July and October (72%).

Average rainfall in September
Perryville, AR

Average rainfall in September - Perryville, AR
  • Average rainfall in September: 1.93"

The wettest month (with the highest rainfall) is April (4.49").
The driest month (with the least rainfall) is September (1.93").

Average rainfall days in September
Perryville, AR

Average rainfall days in September - Perryville, AR
  • Average rainfall days in September: 11.4 days

The month with the highest number of rainy days is July (15.9 days).
The month with the least rainy days is January (9.7 days).

Average snowfall in September
Perryville, AR

Average snowfall in September - Perryville, AR
  • Average snowfall in September: 0"

The month with the highest snowfall is February (0.91").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in September
Perryville, AR

Average snowfall days in September - Perryville, AR
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (1.7 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight in September /
Average sunshine in September
Perryville, AR

Average daylight in September / Average sunshine in September - Perryville, AR
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).

  • Average sunshine in September: 9h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 18min).

Average sunshine days in September
Perryville, AR

Average sunshine days in September - Perryville, AR
  • Average sunshine days in September: 15.9 days

The month with the most sunshine days is January (18.9 days).
The month with the least sunshine days is July (12.9 days).

Average UV index in September
Perryville, AR

Average UV index in September - Perryville, AR
  • Average UV index in September: 6

The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January and December (UV index 2).

Average cloud cover in September
Perryville, AR

Average cloud cover in September - Perryville, AR
  • Average cloud cover in September: 27

The month with the most cloud cover is February (Cloud cover 45).
The month with the least cloud cover is June (Cloud cover 26).

Average visibility in September
Perryville, AR

Average visibility in September - Perryville, AR
  • Average visibility in September: 6mi

The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).

Perryville, Arkansas, USA

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