September weather forecast and climate
Halfway, AR

Weather in September

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

Temperature

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

Heat index

In September, the average heat index is appraised at a very hot 98.8°F (37.1°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel', 'feels like', 'apparent temperature', or 'felt air temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. Additional factors like activity, metabolic differences, clothing, and pregnancy 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. 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. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

Months with the lowest humidity in Halfway, Arkansas, are July through October, with an average relative humidity of 71%.

Rainfall

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

Snowfall

In Halfway snow does not fall in April through December.

Daylight

The average length of the day in September is 12.4h.

Sunshine

The average sunshine in Halfway is 9.5h.

UV index

The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from the exposure to the Sun's UV radiation for the ordinary person.
Note: The daily maximum UV index of 5 interpret into the following advice:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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 Halfway?

The average high-temperature, in September, in Halfway, Arkansas, is 87.3°F (30.7°C), while the average low-temperature is 65.5°F (18.6°C). The average heat index (a.k.a. 'real feel', 'feels like'), that factores the actual air temperature with the relative humidity, in September is estimated at 98.8°F (37.1°C).

What are the least humid months in Halfway?

Months with the lowest humidity in Halfway are July through October, with an average relative humidity of 71%.

What is the average humidity in September in Halfway?

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

How much does it rain in Halfway in September?

In Halfway, in September, it is raining for 10.2 days, with typically 1.26" (32mm) of accumulated precipitation.

What is the driest month in Halfway?

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

When it does not snow in Halfway?

April through December are months without snowfall in Halfway.

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

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

How long on average sun shines in September in Halfway?

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

What is the UV index reading in September in Halfway?

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

Average temperature in September
Halfway, AR

Average temperature in September - Halfway, 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
Halfway, AR

Average pressure in September - Halfway, 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
Halfway, AR

Average wind speed in September - Halfway, 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
Halfway, AR

Average humidity in September - Halfway, 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
Halfway, AR

Average rainfall in September - Halfway, 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
Halfway, AR

Average rainfall days in September - Halfway, 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
Halfway, AR

Average snowfall in September - Halfway, 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
Halfway, AR

Average snowfall days in September - Halfway, 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
Halfway, AR

Average daylight in September / Average sunshine in September - Halfway, 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
Halfway, AR

Average sunshine days in September - Halfway, 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
Halfway, AR

Average UV index in September - Halfway, 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
Halfway, AR

Average cloud cover in September - Halfway, 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
Halfway, AR

Average visibility in September - Halfway, 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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