September weather forecast
Smithton, AR

Weather in September

September, the first month of the autumn, in Smithton, is also a hot month, with average temperature fluctuating between 87.3°F (30.7°C) and 65.5°F (18.6°C).

Temperature

In September, the average high-temperature marginally drops, from a tropical 93.2°F (34°C) in August, to a still hot 87.3°F (30.7°C). The average low-temperature, in September, is 65.5°F (18.6°C).

Heat index

In September, the average heat index is calculated to be a very hot 98.8°F (37.1°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'feels like', 'felt air temperature', or 'real feel', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (clothing, differences in body mass, height, and shape, metabolic differences). Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. 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.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

July through October, with an average relative humidity of 71%, are the least humid months.

Rainfall

September is the month with the least rainfall. Rain falls for 10.2 days and accumulates 1.26" (32mm) of precipitation.

Snowfall

April through December are months without snowfall.

Daylight

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

Sunshine

In Smithton, the average sunshine is 9.5h.

UV index

In Smithton, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 5 interpret into the following advice:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in September in Smithton?

The average high-temperature, in September, is 87.3°F (30.7°C), while the average low-temperature is 65.5°F (18.6°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which represents the influence of relative humidity on air temperature, in September is calculated to be 98.8°F (37.1°C).

What are the least humid months in Smithton?

Months with the lowest humidity in Smithton, Arkansas, are July through October, with an average relative humidity of 71%.

What is the average humidity in September in Smithton?

In September, the average relative humidity is 71%.

What is the driest month in Smithton?

September is the month with the least rainfall in Smithton, Arkansas. Rain falls for 10.2 days and accumulates 1.26" (32mm) of precipitation.

How much does it rain in Smithton in September?

In Smithton, Arkansas, in September, during 10.2 rainfall days, 1.26" (32mm) of precipitation is typically accumulated.

When it does not snow in Smithton?

April through December are months without snowfall in Smithton.

How many hours of daylight does Smithton have in September?

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

How many hours of sunshine does Smithton have in September?

The average sunshine in September in Smithton, Arkansas, is 9.5h.

How high is the UV index in September in Smithton?

The average daily maximum UV index in September in Smithton, Arkansas, is 5. A UV Index estimate of 3 to 5 represents a moderate vulnerability from unsafe exposure to the Sun's UV rays.

Average temperature in September
Smithton, AR

Average temperature in September - Smithton, AR
  • Average high temperature in September: 87.3°F

The warmest month (with the highest average high temperature) is July (93.7°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 (35.2°F).

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Average pressure in September
Smithton, AR

Average pressure in September - Smithton, 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
Smithton, AR

Average wind speed in September - Smithton, AR
  • Average wind speed in September: 5mph

The windiest month (with the highest average wind speed) is April (7.1mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).

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Average humidity in September
Smithton, AR

Average humidity in September - Smithton, AR
  • Average humidity in September: 71%

Months with the highest relative humidity are February, March and December (80%).
Months with the lowest relative humidity are July, August, September and October (71%).

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Average rainfall in September
Smithton, AR

Average rainfall in September - Smithton, AR
  • Average rainfall in September: 1.26"

The wettest month (with the highest rainfall) is April (3.39").
The driest month (with the least rainfall) is September (1.26").

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Average rainfall days in September
Smithton, AR

Average rainfall days in September - Smithton, AR
  • Average rainfall days in September: 10.2 days

The month with the highest number of rainy days is July (14.2 days).
The month with the least rainy days is October (8.5 days).

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Average snowfall in September
Smithton, AR

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

The month with the highest snowfall is February (0.35").
Months with the least snowfall are April, May, June, July, August, September, October, November and December (0").

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Average snowfall days in September
Smithton, AR

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

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

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

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

The month with the longest days is June (Average daylight: 14.4h).
The month with the shortest days is December (Average daylight: 9.9h).

  • Average sunshine in September: 9.5h

The month with the most sunshine is July (Average sunshine: 10.6h).
The month with the least sunshine is February (Average sunshine: 5h).

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Average sunshine days in September
Smithton, AR

Average sunshine days in September - Smithton, AR
  • Average sunshine days in September: 17.8 days

The month with the most sunshine days is October (20.8 days).
The month with the least sunshine days is August (14.1 days).

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Average UV index in September
Smithton, AR

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

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
Smithton, AR

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

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 28).

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Average visibility in September
Smithton, AR

Average visibility in September - Smithton, 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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