September weather forecast
Kellum, AR

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Weather in September

The first month of the autumn, September, is also a hot month in Kellum, Arkansas, with an average temperature ranging between max 86.9°F (30.5°C) and min 65.5°F (18.6°C).

Temperature

September's arrival subtly correlates with a reduction in the average high-temperature, down from 93.2°F (34°C) in August to a still tropical 86.9°F (30.5°C). During September, Kellum experiences an average low-temperature of 65.5°F (18.6°C) at night.

Heat index

For most parts of September, the heat index is estimated at a sweltering 96.8°F (36°C). Ensure additional precautions, heat exhaustion and heat cramps may be expected. Heatstroke could occur from sustained activity.
Heat index data is primarily for areas with shade and subjected to light winds. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is the result of factoring in humidity to the air temperature, indicating perceived warmth. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.
The body's inherent cooling system operates through perspiration, wherein evaporating sweat offsets excessive heat. A surge in relative humidity can disrupt the body's normal cooling function by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.

Humidity

In September, the average relative humidity is 69%.

Rainfall

The month with the least rainfall is September, when the rain falls for 11.1 days and typically collects 1.34" (34mm) of precipitation.

Snowfall

In Kellum, snow does not fall in April through November.

Daylight

The average length of the day in September is 12h and 22min.
On the first day of September, sunrise is at 6:51 am and sunset at 7:43 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 7:02 pm CDT.

Sunshine

In September, the average sunshine is 9.4h.

UV index

The average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: The daily high UV index of 6 in September translates into this advice:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Updated: Jul 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in September?

The average high-temperature and low-temperature during September are 86.9°F (30.5°C) and 65.5°F (18.6°C) respectively. In September, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines air temperature and relative humidity, is estimated at 96.8°F (36°C).

What is the average humidity in September?

The average relative humidity in September is 69%.

What is the driest month?

September is the month with the least rainfall. Rain falls for 11.1 days and accumulates 1.34" (34mm) of precipitation.

How many days does it rain in September?

In Kellum, in September, it is raining for 11.1 days, with typically 1.34" (34mm) of accumulated precipitation.

When it does not snow?

In Kellum, snow does not fall in April through November.

How many hours of daylight does Kellum have in September?

In Kellum, the average day length in September is 12h and 22min.

When is the sunrise / sunset in September?

In September, on the first day of the month, sunrise is at 6:51 am and sunset at 7:43 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 7:02 pm CDT.

How many hours of sunshine does Kellum have in September?

The average sunshine duration in September is 9.4h.

What is the UV index reading in September?

In Kellum, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high hazard to health from unsafe exposure to Sun's UV rays.
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
Kellum, AR

Average temperature in September - Kellum, AR
  • Average high temperature in September: 86.9°F

The warmest month (with the highest average high temperature) is July (93.4°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 (34.3°F).

Average pressure in September
Kellum, AR

Average pressure in September - Kellum, AR
  • Average pressure in September: 29.99"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in September
Kellum, AR

Average wind speed in September - Kellum, AR
  • Average wind speed in September: 5.3mph

The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest month (with the lowest average wind speed) is August (5mph).

Average humidity in September
Kellum, AR

Average humidity in September - Kellum, AR
  • Average humidity in September: 69%

The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is August (68%).

Average rainfall in September
Kellum, AR

Average rainfall in September - Kellum, AR
  • Average rainfall in September: 1.34"

The wettest month (with the highest rainfall) is May (3.98").
The driest month (with the least rainfall) is September (1.34").

Average rainfall days in September
Kellum, AR

Average rainfall days in September - Kellum, AR
  • Average rainfall days in September: 11.1 days

The month with the highest number of rainy days is July (13.7 days).
The month with the least rainy days is January (8.5 days).

Average snowfall in September
Kellum, AR

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

The month with the highest snowfall is February (0.51").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

Average snowfall days in September
Kellum, AR

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

The month with the highest number of snowfall days is February (1.2 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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

Average daylight in September / Average sunshine in September - Kellum, 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 2min

The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 12min).

Average sunshine days in September
Kellum, AR

Average sunshine days in September - Kellum, AR
  • Average sunshine days in September: 16.8 days

The month with the most sunshine days is January (20.5 days).
The months with the least sunshine days are May and August (14.8 days).

Average UV index in September
Kellum, AR

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

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

Average cloud cover in September
Kellum, AR

Average cloud cover in September - Kellum, AR
  • Average cloud cover in September: 27

The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 26).

Average visibility in September
Kellum, AR

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

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

Kellum, Arkansas, USA

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