September weather forecast
Bentonville, AR

The scenic residential neighborhood in Bentonville, in Northwest Arkansas
The scenic residential neighborhood in Bentonville, in Northwest Arkansas

Weather in September

The first month of the autumn, September, is also a moderately hot month in Bentonville, Arkansas, with an average temperature varying between 81.1°F (27.3°C) and 61°F (16.1°C).

Temperature

In Bentonville, the average high-temperature in September slightly decreases from a tropical 88.2°F (31.2°C) in August to a moderately hot 81.1°F (27.3°C). In Bentonville, in September, the average low-temperature is 61°F (16.1°C).

Heat index

In September, the average heat index is appraised at a hot 86°F (30°C). Exhaustion is likely with prolonged exposure and activity. Sustaining activity 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 'apparent temperature', 'felt air temperature', 'feels like', or 'real feel', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. Additional factors like activity, wind, pregnancy, and metabolic differences affect individual temperature impact. 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 Bentonville, the average relative humidity in September is 73%.

Rainfall

In September, the rain falls for 13.7 days. Throughout September, 2.4" (61mm) of precipitation is accumulated. Throughout the year, in Bentonville, there are 152.6 rainfall days, and 33.23" (844mm) of precipitation is accumulated.

Snowfall

June through October are months without snowfall in Bentonville.

Daylight

In Bentonville, the average length of the day in September is 12h and 24min.
On the first day of September in Bentonville, sunrise is at 6:48 am and sunset at 7:45 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 7:02 pm CDT.

Sunshine

In September, the average sunshine in Bentonville is 9.5h.

UV index

In Bentonville, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the average person.
Note: The average daily UV index of 5 in September transform into the following instructions:
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. 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. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in September in Bentonville?

In Bentonville, Arkansas, in September, the average high-temperature is 81.1°F (27.3°C), and the average low-temperature is 61°F (16.1°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which factors the actual air temperature with the relative humidity, in September is appraised at 86°F (30°C).

What is the average humidity in September in Bentonville?

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

How many days does it rain in September in Bentonville?

In Bentonville, Arkansas, in September, during 13.7 rainfall days, 2.4" (61mm) of precipitation is typically accumulated.

When it does not snow in Bentonville?

June through October are months without snowfall.

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

In Bentonville, Arkansas, the average day length in September is 12h and 24min.

When are sunrise and sunset in September in Bentonville?

In September, on the first day of the month, sunrise is at 6:48 am and sunset at 7:45 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 7:02 pm CDT.

How long on average sun shines in September in Bentonville?

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

What is the UV index reading in September in Bentonville?

The average daily maximum UV index in September in Bentonville is 5. A UV Index value of 3 to 5 symbolizes a moderate health threat from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Bentonville, AR

Average temperature in September - Bentonville, AR
  • Average high temperature in September: 81.1°F

The warmest month (with the highest average high temperature) is July (89.4°F).
The month with the lowest average high temperature is January (44.2°F).

  • Average low temperature in September: 61°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 (28.4°F).

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Average pressure in September
Bentonville, AR

Average pressure in September - Bentonville, AR
  • 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 (29.93"Hg).

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Average wind speed in September
Bentonville, AR

Average wind speed in September - Bentonville, AR
  • Average wind speed in September: 6.8mph

The windiest month (with the highest average wind speed) is April (10mph).
The calmest month (with the lowest average wind speed) is July (6.3mph).

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Average humidity in September
Bentonville, AR

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

The month with the highest relative humidity is May (77%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in September
Bentonville, AR

Average rainfall in September - Bentonville, AR
  • Average rainfall in September: 2.4"

The wettest month (with the highest rainfall) is May (4.17").
The driest month (with the least rainfall) is February (1.73").

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Average rainfall days in September
Bentonville, AR

Average rainfall days in September - Bentonville, AR
  • Average rainfall days in September: 13.7 days

The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is January (8.1 days).

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Average snowfall in September
Bentonville, AR

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

The month with the highest snowfall is February (1.69").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in September
Bentonville, AR

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

The month with the highest number of snowfall days is February (4 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in September / Average sunshine in September - Bentonville, AR
  • Average daylight in September: 12h and 24min

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 44min).

  • Average sunshine in September: 9h and 30min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 5h and 24min).

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Average sunshine days in September
Bentonville, AR

Average sunshine days in September - Bentonville, AR
  • Average sunshine days in September: 14.5 days

The month with the most sunshine days is December (19.9 days).
The month with the least sunshine days is May (11.8 days).

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Average UV index in September
Bentonville, AR

Average UV index in September - Bentonville, AR
  • 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 and December (UV index 2).

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Average cloud cover in September
Bentonville, AR

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

The months with the most cloud cover are February and March (Cloud cover 45).
The month with the least cloud cover is August (Cloud cover 24).

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Average visibility in September
Bentonville, AR

Average visibility in September - Bentonville, AR
  • 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).

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