September weather forecast
Osceola, AR

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Weather in September

September acts as a transition month in Osceola, subtly shifting from summer to autumn. While the mercury remains high, a noticeable reduction in temperatures compared to August indicates the arrival of fall. However, the sunshine remains ample, and daylight continues to decrease gradually. The month also registers the lowest rainfall of the year. Winds, on the contrary, start to slightly pick up, signalling the onset of autumn’s changeable conditions.

Temperature

As August transitions into September, the average high-temperature in Osceola rests at a moderately hot 82.6°F (28.1°C), maintaining a close resemblance to the previous month. Osceola records an average temperature drop to a refreshing 64°F (17.8°C) in September.

Heat index

September's heat index is evaluated at a tropical 87.8°F (31°C). Persistently participating in activities during exposure may lead to fatigue and induce heat cramps.
The standards for the heat index are set for locations in shade and under light breezes. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is achieved by amalgamating air temperature with the relative humidity readings. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Younglings frequently fail to recognize the requirement to rest and rehydrate. Thirst emerges late in dehydration - it is imperative to keep hydration levels high, particularly during extended physical exertions.

Humidity

The average relative humidity in September in Osceola is 73%.

Rainfall

The month with the least rainfall in Osceola is September, when the rain falls for 9.9 days and typically collects 1.57" (40mm) of precipitation.

Snowfall

In Osceola, snow does not fall in April through September.

Daylight

The average length of the day in September in Osceola is 12h and 23min.
On the first day of September, sunrise is at 6:32 am and sunset at 7:26 pm. On the last day of the month, sunrise is at 6:54 am and sunset at 6:44 pm CDT.

Sunshine

In September, the average sunshine is 9.7h.

UV index

The average daily maximum UV index in September in Osceola is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: The UV index of 5 during September leads to these advisories:
Put precautions into practice - Ensuring skin and eye safety is a necessity. Avoiding the Sun during its peak radiation time around midday is a healthy practice. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
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Frequently asked questions

How hot is it in Osceola in September?

In September, in Osceola, the average high-temperature is 82.6°F (28.1°C), and the average low-temperature is 64°F (17.8°C). The average heat index (a.k.a. 'real feel', 'feels like'), which factors the actual air temperature with the relative humidity, in September is evaluated at 87.8°F (31°C).

What is the average humidity in September in Osceola?

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

What is the driest month in Osceola?

The month with the least rainfall in Osceola, Arkansas, is September, when the rain falls for 9.9 days and typically collects 1.57" (40mm) of precipitation.

How much does it rain in Osceola in September?

In September, the rain falls for 9.9 days. Throughout September, 1.57" (40mm) of precipitation is accumulated.

When it does not snow in Osceola?

April through September are months without snowfall.

Does it snow in Osceola in September?

In Osceola, in September, it doesn't snow. In October, it regularly snows.

What is the average length of the day in September in Osceola?

The average day length in September in Osceola, Arkansas, is 12h and 23min.

When are sunrise and sunset in September in Osceola?

On the first day of September in Osceola, sunrise is at 6:32 am and sunset at 7:26 pm. On the last day of the month, sunrise is at 6:54 am and sunset at 6:44 pm CDT.

How many hours of sunshine does Osceola have in September?

In September, the average sunshine duration in Osceola, Arkansas, is 9.7h.

What is the UV index reading in September in Osceola?

In Osceola, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate vulnerability 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
Osceola, AR

Average temperature in September - Osceola, AR
  • Average high temperature in September: 82.6°F

The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is January (45.1°F).

  • Average low temperature in September: 64°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 (32.5°F).

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Average pressure in September
Osceola, AR

Average pressure in September - Osceola, AR
  • Average pressure in September: 30.01"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed in September
Osceola, AR

Average wind speed in September - Osceola, AR
  • Average wind speed in September: 6.2mph

The windiest month (with the highest average wind speed) is February (9.7mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).

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Average humidity in September
Osceola, AR

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

The month with the highest relative humidity is March (79%).
The month with the lowest relative humidity is October (68%).

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Average rainfall in September
Osceola, AR

Average rainfall in September - Osceola, AR
  • Average rainfall in September: 1.57"

The wettest month (with the highest rainfall) is February (4.21").
The driest month (with the least rainfall) is September (1.57").

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Average rainfall days in September
Osceola, AR

Average rainfall days in September - Osceola, AR
  • Average rainfall days in September: 9.9 days

The month with the highest number of rainy days is May (16.5 days).
The month with the least rainy days is November (8.7 days).

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Average snowfall in September
Osceola, AR

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

The month with the highest snowfall is March (1.22").
The months with the least snowfall are April, May, June, July, August and September (0").

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Average snowfall days in September
Osceola, AR

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

The month with the highest number of snowfall days is February (1.9 days).
The months with the least snowfall days are April, May, June, July, August and September (0 days).

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

Average daylight in September / Average sunshine in September - Osceola, AR
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).

  • Average sunshine in September: 9h and 4min

The months with the most sunshine are June and July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

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Average sunshine days in September
Osceola, AR

Average sunshine days in September - Osceola, AR
  • Average sunshine days in September: 19.1 days

The month with the most sunshine days is October (20.1 days).
The months with the least sunshine days are June and July (13.3 days).

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Average UV index in September
Osceola, AR

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

The 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
Osceola, AR

Average cloud cover in September - Osceola, AR
  • Average cloud cover in September: 26

The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is June (Cloud cover 24).

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Average visibility in September
Osceola, AR

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

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

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Osceola, Arkansas, USA

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