September weather forecast and climate
Beirne, AR

Weather in September

The first month of the autumn, September, is still a hot month in Beirne, Arkansas, with average temperature fluctuating between 65.5°F (18.6°C) and 87.3°F (30.7°C).

Temperature

In Beirne, Arkansas, the average high-temperature in September slightly decreases, from a tropical 93.2°F (34°C) in August, to a still hot 87.3°F (30.7°C). In September, in Beirne, the average low-temperature is 65.5°F (18.6°C).

Heat index

The average heat index is evaluated at a sweltering 98.8°F (37.1°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 'apparent temperature', 'real feel', 'feels like', or 'felt air temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. Additional factors like activity, differences in body mass, height, and shape, pregnancy, and wind 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 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.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. 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.

Rainfall

September is the month with the least rainfall in Beirne. Rain falls for 10.2 days and accumulates 1.26" (32mm) of precipitation.

Snowfall

April through December are months without snowfall.

Daylight

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

Sunshine

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

UV index

In September, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to the UV radiation for average individuals.
Note: The average daily UV index of 5 in September transform into the following instructions:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the temperature in September in Beirne?

In September, in Beirne, Arkansas, the average high-temperature is 87.3°F (30.7°C), and the average low-temperature is 65.5°F (18.6°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), that combines both air temperature and relative humidity, in September is calculated to 98.8°F (37.1°C).

What is the least humid month in Beirne?

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

What is the average humidity in September in Beirne?

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

How much does it rain in Beirne in September?

In Beirne, Arkansas, in September, during 10.2 rainfall days, 1.26" (32mm) of precipitation is typically accumulated.

What is the driest month in Beirne?

The month with the least rainfall in Beirne, Arkansas, is September when the rain falls for 10.2 days and typically collects 1.26" (32mm) of precipitation.

When it does not snow in Beirne?

In Beirne, Arkansas, snow does not fall in April through December.

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

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

How many hours of sunshine does Beirne have in September?

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

What is the UV index reading in September in Beirne?

The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate vulnerability from the exposure to the Sun's UV radiation.

Average temperature in September
Beirne, AR

Average temperature in September - Beirne, AR
  • Average high temperature in September: 87.3°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 (51.3°F).

  • Average low temperature in September: 65.5°F

The month with the highest average low temperature is July (72°F).
The coldest month (with the lowest average low temperature) is January (35.2°F).

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Average pressure in September
Beirne, AR

Average pressure in September - Beirne, AR
  • Average pressure in September: 30"

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
Beirne, AR

Average wind speed in September - Beirne, AR
  • Average wind speed in September: 5mph

The windiest month (with the highest average wind speed) is April (7.1mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).

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Average humidity in September
Beirne, AR

Average humidity in September - Beirne, 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
Beirne, AR

Average rainfall in September - Beirne, AR
  • Average rainfall in September: 1.26"

The wettest month (with the highest rainfall) is April (3.39").
The driest month (with the least rainfall) is September (1.26").

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Average rainfall days in September
Beirne, AR

Average rainfall days in September - Beirne, AR
  • Average rainfall days in September: 10.2 days

The month with the highest number of rainy days is July (14.2 days).
The month with the least rainy days is October (8.5 days).

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Average snowfall in September
Beirne, AR

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

The month with the highest snowfall is February (0.35").
Months with the least snowfall are April, May, June, July, August, September, October, November and December (0").

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Average snowfall days in September
Beirne, AR

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

The month with the highest number of snowfall days is February (1.3 days).
Months with the least snowfall days are April, May, June, July, August, September, October and December (0 days).

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

Average daylight in September / Average sunshine in September - Beirne, 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: 9.9h).

  • Average sunshine in September: 9.5h

The month with the most sunshine is July (Average sunshine: 10.6h).
The month with the least sunshine is February (Average sunshine: 5h).

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Average sunshine days in September
Beirne, AR

Average sunshine days in September - Beirne, AR
  • Average sunshine days in September: 17.8 days

The month with the most sunshine days is October (20.8 days).
The month with the least sunshine days is August (14.1 days).

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Average UV index in September
Beirne, AR

Average UV index in September - Beirne, AR
  • Average UV index in September: 5

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

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Average cloud cover in September
Beirne, AR

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

The month with the most cloud cover is February (Cloud cover 49).
Months with the least cloud cover are June, July, August and September (Cloud cover 28).

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Average visibility in September
Beirne, AR

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

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

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