September weather forecast and climate
Cullendale, AR

Weather in September

The first month of the autumn, September, is still a hot month in Cullendale, Arkansas, with average temperature fluctuating between 87.6°F (30.9°C) and 66°F (18.9°C).

Temperature

In September, the average high-temperature slightly decreases, from a hot 93°F (33.9°C) in August, to a still tropical 87.6°F (30.9°C). The average low-temperature, in September, is 66°F (18.9°C).

Heat index

The average heat index is estimated at a very hot 99.7°F (37.6°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
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 'felt air temperature', 'real feel', 'feels like', or 'apparent temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. Additional factors like differences in body mass, height, and shape, metabolic differences, wind, 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 especially crucial for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

July through October, with an average relative humidity of 71%, are the least humid months in Cullendale, Arkansas.

Rainfall

The month with the least rainfall in Cullendale, Arkansas, is September when the rain falls for 11.5 days and typically collects 2.01" (51mm) of precipitation.

Snowfall

April through October are months without snowfall in Cullendale.

Daylight

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

Sunshine

In Cullendale, the average sunshine is 9.6h.

UV index

The average daily maximum UV index in Cullendale is 6. A UV Index estimate of 6 to 7 represents a high threat to health from unsafe exposure to the UV radiation for the average person.
Note: In September, the average maximum UV index of 6 translate into the following recommendations:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in September in Cullendale?

In Cullendale, in September, the average high-temperature is 87.6°F (30.9°C), and the average low-temperature is 66°F (18.9°C). In September, the average heat index (a.k.a. 'real feel', 'felt air temperature'), that combines relative humidity and air temperature, is calculated to 99.7°F (37.6°C).

What are the least humid months in Cullendale?

July through October, with an average relative humidity of 71%, are the least humid months.

What is the average humidity in September in Cullendale?

In September, the average relative humidity in Cullendale, Arkansas, is 71%.

How much does it rain in Cullendale in September?

In September, in Cullendale, Arkansas, the rain falls for 11.5 days. Throughout September, 2.01" (51mm) of precipitation is accumulated.

What is the driest month in Cullendale?

September is the month with the least rainfall in Cullendale. Rain falls for 11.5 days and accumulates 2.01" (51mm) of precipitation.

When it does not snow in Cullendale?

April through October are months without snowfall in Cullendale, Arkansas.

What is the average length of the day in September in Cullendale?

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

How many hours of sunshine does Cullendale have in September?

In September, the average sunshine in Cullendale is 9.6h.

How high is the UV index in September in Cullendale?

The average daily maximum UV index in September in Cullendale is 6. A UV Index estimate of 6 to 7 represents a high health threat from unsafe exposure to the Sun's UV rays.

Average temperature in September
Cullendale, AR

Average temperature in September - Cullendale, AR
  • Average high temperature in September: 87.6°F

The warmest month (with the highest average high temperature) is July (93.7°F).
The month with the lowest average high temperature is January (52°F).

  • Average low temperature in September: 66°F

The month with the highest average low temperature is July (72.9°F).
The coldest month (with the lowest average low temperature) is January (36°F).

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Average pressure in September
Cullendale, AR

Average pressure in September - Cullendale, AR
  • Average pressure in September: 29.99"

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

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Average wind speed in September
Cullendale, AR

Average wind speed in September - Cullendale, AR
  • Average wind speed in September: 4.9mph

The windiest month (with the highest average wind speed) is April (7.2mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

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Average humidity in September
Cullendale, AR

Average humidity in September - Cullendale, AR
  • Average humidity in September: 71%

Months with the highest relative humidity are February, March and December (80%).
Months with the lowest relative humidity are July, August, September and October (71%).

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Average rainfall in September
Cullendale, AR

Average rainfall in September - Cullendale, AR
  • Average rainfall in September: 2.01"

The wettest month (with the highest rainfall) is April (4.88").
The driest month (with the least rainfall) is September (2.01").

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Average rainfall days in September
Cullendale, AR

Average rainfall days in September - Cullendale, AR
  • Average rainfall days in September: 11.5 days

The month with the highest number of rainy days is July (16.2 days).
The month with the least rainy days is October (9.5 days).

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Average snowfall in September
Cullendale, AR

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

The month with the highest snowfall is February (0.59").
Months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in September
Cullendale, AR

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

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

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

Average daylight in September / Average sunshine in September - Cullendale, AR
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.4h).
The month with the shortest days is December (Average daylight: 10h).

  • Average sunshine in September: 9.6h

The month with the most sunshine is July (Average sunshine: 10.5h).
The month with the least sunshine is February (Average sunshine: 4.8h).

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Average sunshine days in September
Cullendale, AR

Average sunshine days in September - Cullendale, AR
  • Average sunshine days in September: 16.4 days

The month with the most sunshine days is October (19.9 days).
The month with the least sunshine days is July (12.7 days).

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Average UV index in September
Cullendale, AR

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

Months with the highest UV index are June and July (UV index 7).
Months with the lowest UV index are January, February, November and December (UV index 3).

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Average cloud cover in September
Cullendale, AR

Average cloud cover in September - Cullendale, AR
  • Average cloud cover in September: 28

The month with the most cloud cover is February (Cloud cover 50).
Months with the least cloud cover are June and September (Cloud cover 28).

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Average visibility in September
Cullendale, AR

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

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

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