September weather forecast
Cooleyville, AR

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Weather in September

September, the first month of the autumn in Cooleyville, is still a warm month, with an average temperature fluctuating between 85.8°F (29.9°C) and 64.9°F (18.3°C).

Temperature

September's arrival signals a moderate reduction in the average high-temperature, easing from a hot 92.5°F (33.6°C) in August to a moderately hot 85.8°F (29.9°C). In Cooleyville, an average temperature of 64.9°F (18.3°C) is noted during September nights.

Heat index

For most parts of September, the heat index is appraised at a sweltering 95°F (35°C). Adopt heightened safety measures, heat cramps and heat exhaustion may occur. Sustained activity might cause heatstroke.
Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'real feel' or 'feels like', combines both the air temperature and the humidity level to give a perceived human temperature. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.
One way the human body deals with excessive warmth is by perspiring and allowing sweat to evaporate. Increased relative humidity slows down evaporation, thereby decreasing the rate of heat removal from the body, culminating in a sensation of overheating. Rising body temperatures due to excess heat retention could signify impending heat disorders.

Humidity

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

Rainfall

In September, the rain falls for 11.8 days. Throughout September, 2.36" (60mm) of precipitation is accumulated. Throughout the year, there are 149.1 rainfall days, and 37.4" (950mm) of precipitation is accumulated.

Snowfall

In Cooleyville, 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 6:49 am and sunset at 7:40 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 7:00 pm CDT.

Sunshine

The average sunshine in September in Cooleyville is 9.3h.

UV index

In Cooleyville, Arkansas, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum UV index, 6 during September, leads to the following recommendations:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Updated: Jul 18, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in September?

The high-temperature, in September, in Cooleyville, records 85.8°F (29.9°C), while the low-temperature is 64.9°F (18.3°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which combines air temperature and relative humidity, in September is appraised at 95°F (35°C).

What is the average humidity in September?

The average relative humidity in September is 72%.

How much does it rain in September?

In Cooleyville, during September, the rain falls for 11.8 days and regularly aggregates up to 2.36" (60mm) of precipitation.

When it does not snow in Cooleyville?

April through November are months without snowfall in Cooleyville.

What is the average length of the day in September?

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

When are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 6:49 am and sunset at 7:40 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 7:00 pm CDT.

How long on average sun shines in September?

The average sunshine duration in September is 9.3h.

What is the UV index intensity in September?

The average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health threat from 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
Cooleyville, AR

Average temperature in September - Cooleyville, AR
  • Average high temperature in September: 85.8°F

The warmest month (with the highest average high temperature) is July (92.8°F).
The month with the lowest average high temperature is January (50.5°F).

  • Average low temperature in September: 64.9°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 (34.3°F).

Average pressure in September
Cooleyville, AR

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

Average wind speed in September - Cooleyville, AR
  • Average wind speed in September: 5.1mph

The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

Average humidity in September
Cooleyville, AR

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

The months with the highest relative humidity are February and March (80%).
The month with the lowest relative humidity is August (70%).

Average rainfall in September
Cooleyville, AR

Average rainfall in September - Cooleyville, AR
  • Average rainfall in September: 2.36"

The wettest month (with the highest rainfall) is May (4.37").
The driest month (with the least rainfall) is January (2.24").

Average rainfall days in September
Cooleyville, AR

Average rainfall days in September - Cooleyville, AR
  • Average rainfall days in September: 11.8 days

The month with the highest number of rainy days is May (15.4 days).
The month with the least rainy days is November (9.5 days).

Average snowfall in September
Cooleyville, AR

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

The month with the highest snowfall is February (0.55").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

Average snowfall days in September
Cooleyville, AR

Average snowfall days in September - Cooleyville, AR
  • Average snowfall days in September: 0.1 days

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

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

Average daylight in September / Average sunshine in September - Cooleyville, 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 30min).
The months with the least sunshine are February and December (Average sunshine: 5h and 6min).

Average sunshine days in September
Cooleyville, AR

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

The month with the most sunshine days is January (19.7 days).
The month with the least sunshine days is February (13.9 days).

Average UV index in September
Cooleyville, AR

Average UV index in September - Cooleyville, 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
Cooleyville, AR

Average cloud cover in September - Cooleyville, AR
  • Average cloud cover in September: 30

The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 27).

Average visibility in September
Cooleyville, AR

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

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

Cooleyville, Arkansas, USA

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