September weather forecast and climate
Black Oak, AR

Weather in September

The first month of the autumn, September, is still a warm month in Black Oak, Arkansas, with average temperature varying between 82°F (27.8°C) and 64°F (17.8°C).

Temperature

In Black Oak, the average high-temperature is practically the same as in August - a warm 82°F (27.8°C). The average low-temperature, in Black Oak, is 64°F (17.8°C).

Heat index

The average heat index is calculated to a tropical 87.4°F (30.8°C). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
Note that heat index values are valued for light wind and location in the shade. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'apparent temperature', 'felt air temperature', or 'real feel', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. Additional factors like metabolic differences, pregnancy, clothing, 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.

Humidity

In September, the average relative humidity is 74%.

Rainfall

In Black Oak, during September, the rain falls for 13.1 days and regularly aggregates up to 2.56" (65mm) of precipitation. In Black Oak, during the entire year, the rain falls for 163.8 days and collects up to 40.59" (1031mm) of precipitation.

Snowfall

In Black Oak snow does not fall in April through October.

Daylight

In Black Oak, the average length of the day is 12.4h.

Sunshine

In Black Oak, the average sunshine is 9.5h.

UV index

In Black Oak, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from the exposure to the Sun's UV radiation for the ordinary person.
Note: In September, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against the skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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 Black Oak?

In Black Oak, in September, the average high-temperature is 82°F (27.8°C), and the average low-temperature is 64°F (17.8°C). In September, the average heat index (a.k.a. 'felt air temperature', 'real feel'), that combines air temperature and relative humidity, is appraised at 87.4°F (30.8°C).

What is the average humidity in September in Black Oak?

In September, the average relative humidity is 74%.

How much does it rain in Black Oak in September?

In Black Oak, Arkansas, in September, during 13.1 rainfall days, 2.56" (65mm) of precipitation is typically accumulated.

When it does not snow in Black Oak?

In Black Oak snow does not fall in April through October.

How many hours of daylight does Black Oak have in September?

The average length of the day in September in Black Oak, Arkansas, is 12.4h.

How many hours of sunshine does Black Oak have in September?

In September, the average sunshine is 9.5h.

What is the UV index reading in September in Black Oak?

In September, the average daily maximum UV index in Black Oak is 5. A UV Index reading of 3 to 5 represents a moderate health threat from unprotected exposure to the UV radiation.

Average temperature in September
Black Oak, AR

Average temperature in September - Black Oak, AR
  • Average high temperature in September: 82°F

The warmest month (with the highest average high temperature) is July (88.5°F).
The month with the lowest average high temperature is January (45.1°F).

  • Average low temperature in September: 64°F

The month with the highest average low temperature is July (72.1°F).
The coldest month (with the lowest average low temperature) is January (32.5°F).

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Average pressure in September
Black Oak, AR

Average pressure in September - Black Oak, AR
  • Average pressure in September: 30.01"

The month with the highest atmospheric pressure is January (30.17").
The month with the lowest atmospheric pressure is June (29.93").

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Average wind speed in September
Black Oak, AR

Average wind speed in September - Black Oak, AR
  • Average wind speed in September: 6.3mph

The windiest month (with the highest average wind speed) is February (9.7mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).

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Average humidity in September
Black Oak, AR

Average humidity in September - Black Oak, AR
  • Average humidity in September: 74%

The month with the highest relative humidity is March (78%).
The month with the lowest relative humidity is October (68%).

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Average rainfall in September
Black Oak, AR

Average rainfall in September - Black Oak, AR
  • Average rainfall in September: 2.56"

The wettest month (with the highest rainfall) is May (4.49").
The driest month (with the least rainfall) is January (2.48").

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Average rainfall days in September
Black Oak, AR

Average rainfall days in September - Black Oak, AR
  • Average rainfall days in September: 13.1 days

Months with the highest number of rainy days are May and July (16.8 days).
The month with the least rainy days is October (10 days).

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Average snowfall in September
Black Oak, AR

Average snowfall in September - Black Oak, AR
  • Average snowfall in September: 0"

The month with the highest snowfall is February (1.57").
Months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in September
Black Oak, AR

Average snowfall days in September - Black Oak, AR
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (2.1 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
Black Oak, AR

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

The month with the longest days is June (Average daylight: 14.6h).
The month with the shortest days is December (Average daylight: 9.8h).

  • Average sunshine in September: 9.5h

The month with the most sunshine is June (Average sunshine: 10.9h).
The month with the least sunshine is February (Average sunshine: 4.8h).

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Average sunshine days in September
Black Oak, AR

Average sunshine days in September - Black Oak, AR
  • Average sunshine days in September: 15.1 days

The month with the most sunshine days is October (19.3 days).
Months with the least sunshine days are July and August (11.2 days).

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Average UV index in September
Black Oak, AR

Average UV index in September - Black Oak, AR
  • Average UV index in September: 5

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

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Average cloud cover in September
Black Oak, AR

Average cloud cover in September - Black Oak, AR
  • Average cloud cover in September: 28

The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is June (Cloud cover 24).

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Average visibility in September
Black Oak, AR

Average visibility in September - Black Oak, AR
  • 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).

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