September weather forecast
Cooleyville, AR

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Weather in September

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

Temperature

Transition into September subtly marks a drop in the average high-temperature, moderately moving from a hot 92.5°F (33.6°C) in August to a warm 85.8°F (29.9°C). Nighttime temperature dips to a mean of 64.9°F (18.3°C) during September.

Heat index

September's average heat index is estimated at a torrid 95°F (35°C). Undertake enhanced precautions, heat exhaustion and heat cramps are possible risks. Continuous activity could trigger heatstroke.
Be aware that heat index ratings are designed for shaded locations and minor breezes. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', represents the fusion of temperature and moisture in the air to suggest how warm it feels. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. Recognize that direct exposure to the sun can escalate the heat effect, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are particularly meaningful for babies and toddlers. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
The evaporation of sweat is a natural cooling mechanism of the human body, facilitated by perspiration. In the presence of elevated relative humidity, the evaporation rate decreases. This reduction leads to increased body heat retention compared to conditions of dry air. When the heat gained surpasses the body's cooling capacity, temperatures rise, signaling potential health concerns.

Humidity

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

Rainfall

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

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

In Cooleyville, Arkansas, the average sunshine in September is 9.3h.

UV index

In Cooleyville, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for average individuals.
Note: In September, an average UV index of 6 transforms into the following instructions:
Stay clear of intense sun exposure. Solar protection is of utmost significance. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. Opt for tightly woven and loose clothing to enhance protection from the Sun. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
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Frequently asked questions

How hot does it get in Cooleyville in September?

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

What is the average humidity in September in Cooleyville?

The average relative humidity in September in Cooleyville, Arkansas, is 72%.

How much does it rain in Cooleyville in September?

In Cooleyville, Arkansas, 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.

How many hours of daylight does Cooleyville have in September?

The average day length in September in Cooleyville is 12h and 22min.

When are sunrise and sunset in September in Cooleyville?

On the first day of September in Cooleyville, Arkansas, 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 many hours of sunshine does Cooleyville have in September?

In September, the average sunshine duration is 9.3h.

How high is the UV index in September in Cooleyville?

In Cooleyville, Arkansas, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high hazard to health from exposure to the Sun's 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
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).

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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).

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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).

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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%).

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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").

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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).

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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").

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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).

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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).

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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).

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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).

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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).

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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).

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Cooleyville, Arkansas, USA

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