September weather forecast
Malvern, AR

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Weather in September

September signals the arrival of the fall season in Malvern. A subtle drop in average high temperatures to 85.5°F (29.7°C) introduces a welcome change from the summer heat. As the days start to become shorter, the warmth of the sun continues in the daylight hours. September retains a portion of summer's warmth while gently ushering in the crisp autumn climate, making it a delightful transition period.

Temperature

The start of September in Malvern involves a subtle temperature drop, shifting from a tropical 91.4°F (33°C) in August to a moderately hot 85.5°F (29.7°C). An average minimum temperature of 64.8°F (18.2°C) is recorded in Malvern during the month of September.

Heat index

September's average heat index is estimated at a torrid 95°F (35°C). Exercise extra preventive actions, heat cramps and heat exhaustion are plausible. Continuous activity could result in heatstroke.
It is essential to grasp that the heat index's numbers are for shade and light wind settings. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
Note: The heat index, also known as 'feels like' or 'apparent temperature', binds temperature metrics with humidity values to give a sense of the actual warmth. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of physical exertion. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are extremely significant for children. Juveniles are regularly less conscious of the need to recuperate and rehydrate. Thirst is a tardy symptom of dehydration - hydration, especially during lengthy physical activities, should be maintained.
Evaporating sweat, an outcome of perspiration, is key in assisting the human body to moderate its temperature. When the air contains significant moisture, the efficiency of the evaporation process decreases, preventing the body from cooling down effectively and creating a feeling of overheating. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.

Humidity

The months with the lowest humidity are July, September and October, with an average relative humidity of 72%.

Rainfall

September is the month with the least rainfall in Malvern. Rain falls for 13.4 days and accumulates 2.24" (57mm) of precipitation.

Snowfall

In Malvern, snow does not fall in April through October.

Daylight

In Malvern, the average length of the day in September is 12h and 23min.
On the first day of the month, sunrise is at 6:45 am and sunset at 7:36 pm. On the last day of September, in Malvern, sunrise is at 7:05 am and sunset at 6:56 pm CDT.

Sunshine

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

UV index

The average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for the average person.
Note: In September, a daily maximum UV index of 6 leads to the following instructions:
Inhibit overexposure. Warding off sun damage is of utmost importance. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
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Frequently asked questions

How hot is it in Malvern in September?

In Malvern, in September, the average high-temperature is 85.5°F (29.7°C), and the average low-temperature is 64.8°F (18.2°C). In September, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, is estimated at 95°F (35°C).

What are the least humid months in Malvern?

The months with the lowest humidity in Malvern are July, September and October, with an average relative humidity of 72%.

What is the average humidity in September in Malvern?

In September, the average relative humidity in Malvern is 72%.

What is the driest month in Malvern?

September is the month with the least rainfall in Malvern. Rain falls for 13.4 days and accumulates 2.24" (57mm) of precipitation.

How many days does it rain in September in Malvern?

In September, the rain falls for 13.4 days. Throughout September, 2.24" (57mm) of precipitation is accumulated.

When it does not snow in Malvern?

In Malvern, Arkansas, snow does not fall in April through October.

How many hours of daylight does Malvern have in September?

In Malvern, Arkansas, the average day length in September is 12h and 23min.

When are sunrise and sunset in September in Malvern?

On the first day of September in Malvern, Arkansas, sunrise is at 6:45 am and sunset at 7:36 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 6:56 pm CDT.

How many hours of sunshine does Malvern have in September?

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

What is the UV index reading in September in Malvern?

In September, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Malvern, AR

Average temperature in September - Malvern, AR
  • Average high temperature in September: 85.5°F

The warmest month (with the highest average high temperature) is July (92.1°F).
The month with the lowest average high temperature is January (49.6°F).

  • Average low temperature in September: 64.8°F

The month with the highest average low temperature is July (71.6°F).
The coldest month (with the lowest average low temperature) is January (33.6°F).

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Average pressure in September
Malvern, AR

Average pressure in September - Malvern, AR
  • Average pressure in September: 30"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed in September
Malvern, AR

Average wind speed in September - Malvern, AR
  • Average wind speed in September: 4.9mph

The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).

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Average humidity in September
Malvern, AR

Average humidity in September - Malvern, AR
  • Average humidity in September: 72%

The month with the highest relative humidity is March (80%).
The months with the lowest relative humidity are July, September and October (72%).

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Average rainfall in September
Malvern, AR

Average rainfall in September - Malvern, AR
  • Average rainfall in September: 2.24"

The wettest month (with the highest rainfall) is April (4.53").
The driest month (with the least rainfall) is September (2.24").

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Average rainfall days in September
Malvern, AR

Average rainfall days in September - Malvern, AR
  • Average rainfall days in September: 13.4 days

The month with the highest number of rainy days is August (18.3 days).
The month with the least rainy days is November (10.2 days).

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Average snowfall in September
Malvern, AR

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

The month with the highest snowfall is February (0.91").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in September
Malvern, AR

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

The month with the highest number of snowfall days is February (1.8 days).
The 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
Malvern, AR

Average daylight in September / Average sunshine in September - Malvern, AR
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in September: 9h and 3min

The months with the most sunshine are June, July and August (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 5h and 12min).

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Average sunshine days in September
Malvern, AR

Average sunshine days in September - Malvern, AR
  • Average sunshine days in September: 13.9 days

The month with the most sunshine days is January (18.6 days).
The month with the least sunshine days is August (10 days).

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Average UV index in September
Malvern, AR

Average UV index in September - Malvern, AR
  • Average UV index in September: 6

The 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
Malvern, AR

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

The month with the most cloud cover is February (Cloud cover 48).
The months with the least cloud cover are June and September (Cloud cover 28).

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Average visibility in September
Malvern, AR

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

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

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Malvern, Arkansas, USA

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