September weather forecast and climate
Aly, AR

Weather in September

The first month of the autumn, September, is also a moderately hot month in Aly, Arkansas, with average temperature fluctuating between 63°F (17.2°C) and 83.7°F (28.7°C).

Temperature

In Aly, Arkansas, the average high-temperature slightly decreases, from a hot 90.1°F (32.3°C) in August, to a moderately hot 83.7°F (28.7°C). In September, in Aly, the average low-temperature is 63°F (17.2°C).

Heat index

In September, the average heat index is appraised at a tropical 90.7°F (32.6°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel', 'feels like', 'felt air temperature', or 'apparent temperature', is a measure of how hot it feels when the actual air humidity is factored in. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (clothing, metabolic differences, differences in body mass, height, and shape). 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 especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

July through October, with an average relative humidity of 73%, are the least humid months.

Rainfall

In Aly, during 13.2 rainfall days, 2.72" (69mm) of precipitation is typically accumulated. Throughout the year, there are 160.2 rainfall days, and 38.86" (987mm) of precipitation is accumulated.

Snowfall

April through October are months without snowfall in Aly, Arkansas.

Daylight

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

Sunshine

In Aly, the average sunshine in September is 9.2h.

UV index

In September, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from the exposure to the Sun's UV rays for ordinary individuals.
Note: In September, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against the skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the temperature in September in Aly?

The average high-temperature, in September, in Aly, Arkansas, is 83.7°F (28.7°C), while the average low-temperature is 63°F (17.2°C). In September, the average heat index (a.k.a. 'feels like', 'apparent temperature'), that factores the actual air temperature with the relative humidity, is calculated to 90.7°F (32.6°C).

What are the least humid months in Aly?

Months with the lowest humidity in Aly are July through October, with an average relative humidity of 73%.

What is the average humidity in September in Aly?

In Aly, Arkansas, the average relative humidity in September is 73%.

How much does it rain in Aly in September?

In September, in Aly, the rain falls for 13.2 days. Throughout September, 2.72" (69mm) of precipitation is accumulated.

When it does not snow in Aly?

April through October are months without snowfall in Aly.

How many hours of daylight does Aly have in September?

In September, the average length of the day in Aly, Arkansas, is 12.4h.

How long on average sun shines in September in Aly?

The average sunshine in September in Aly is 9.2h.

How high is the UV index in September in Aly?

In Aly, Arkansas, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate health threat from unprotected exposure to the UV radiation.

Average temperature in September
Aly, AR

Average temperature in September - Aly, AR
  • Average high temperature in September: 83.7°F

The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is January (48.7°F).

  • Average low temperature in September: 63°F

The month with the highest average low temperature is July (70.2°F).
The coldest month (with the lowest average low temperature) is January (32.5°F).

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Average pressure in September
Aly, AR

Average pressure in September - Aly, 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
Aly, AR

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

The windiest month (with the highest average wind speed) is April (7.8mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).

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Average humidity in September
Aly, AR

Average humidity in September - Aly, AR
  • Average humidity in September: 73%

The month with the highest relative humidity is March (80%).
Months with the lowest relative humidity are July, August, September and October (73%).

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Average rainfall in September
Aly, AR

Average rainfall in September - Aly, AR
  • Average rainfall in September: 2.72"

The wettest month (with the highest rainfall) is May (4.76").
The driest month (with the least rainfall) is January (2.32").

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Average rainfall days in September
Aly, AR

Average rainfall days in September - Aly, AR
  • Average rainfall days in September: 13.2 days

The month with the highest number of rainy days is August (17.7 days).
The month with the least rainy days is January (9.6 days).

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Average snowfall in September
Aly, AR

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

The month with the highest snowfall is February (1.46").
Months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in September
Aly, AR

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

The month with the highest number of snowfall days is February (2 days).
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
Aly, AR

Average daylight in September / Average sunshine in September - Aly, AR
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.5h).
The month with the shortest days is December (Average daylight: 9.9h).

  • Average sunshine in September: 9.2h

The month with the most sunshine is July (Average sunshine: 10.2h).
Months with the least sunshine are February and December (Average sunshine: 5.1).

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Average sunshine days in September
Aly, AR

Average sunshine days in September - Aly, AR
  • Average sunshine days in September: 14.2 days

The month with the most sunshine days is January (19 days).
The month with the least sunshine days is August (10.5 days).

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Average UV index in September
Aly, AR

Average UV index in September - Aly, AR
  • Average UV index in September: 5

The month with the highest UV index is June (UV index 7).
The month with the lowest UV index is December (UV index 2).

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Average cloud cover in September
Aly, AR

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

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 30).

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Average visibility in September
Aly, AR

Average visibility in September - Aly, 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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