September weather forecast and climate
Reader, AR

Weather in September

The first month of the autumn, September, is still a tropical month in Reader, Arkansas, with average temperature ranging between min 65.5°F (18.6°C) and max 87.3°F (30.7°C).

Temperature

In Reader, the average high-temperature in September slightly decreases, from 93.2°F (34°C) in August, to a still tropical 87.3°F (30.7°C). In September, 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 special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. 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 'real feel', 'apparent temperature', 'feels like', or 'felt air temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (clothing, pregnancy, metabolic differences). Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, 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. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 99.5°F (37.5°C) to 100.9°F (38.3°C), thermal conditions are potentially life-threatening.

Humidity

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

Rainfall

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

Snowfall

April through December are months without snowfall in Reader.

Daylight

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

Sunshine

The average sunshine in Reader is 9.5h.

UV index

In Reader, Arkansas, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium health hazard from the exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 5 in September interpret into the following advice:
Take precautions. Light skin individuals may get burned in less than 30 minutes. 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 Reader?

In September, in Reader, 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. 'real feel', 'feels like'), that takes the relative humidity and factores it into the air temperature reading, in September is calculated to 98.8°F (37.1°C).

What is the least humid month in Reader?

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

What is the average humidity in September in Reader?

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

How many days does it rain in September in Reader?

In September, in Reader, Arkansas, the rain falls for 10.2 days. Throughout September, 1.26" (32mm) of precipitation is accumulated.

What is the driest month in Reader?

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

When it does not snow in Reader?

In Reader snow does not fall in April through December.

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

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

How long on average sun shines in September in Reader?

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

What is the UV index reading in September in Reader?

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

Average temperature in September
Reader, AR

Average temperature in September - Reader, 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
Reader, AR

Average pressure in September - Reader, 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
Reader, AR

Average wind speed in September - Reader, 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
Reader, AR

Average humidity in September - Reader, 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
Reader, AR

Average rainfall in September - Reader, 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
Reader, AR

Average rainfall days in September - Reader, 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
Reader, AR

Average snowfall in September - Reader, 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
Reader, AR

Average snowfall days in September - Reader, 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
Reader, AR

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

Average sunshine days in September - Reader, 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
Reader, AR

Average UV index in September - Reader, 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
Reader, AR

Average cloud cover in September - Reader, 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
Reader, AR

Average visibility in September - Reader, 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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