September weather forecast and climate
Clarendon, AR

Weather in September

The first month of the autumn, September, is still a warm month in Clarendon, Arkansas, with average temperature ranging between max 83.5°F (28.6°C) and min 65.7°F (18.7°C).

Temperature

In Clarendon, the average high-temperature is practically the same as in August - a warm 83.5°F (28.6°C). In Clarendon, Arkansas, in September, the average low-temperature is 65.7°F (18.7°C).

Heat index

In September, the average heat index is appraised at a tropical 90.3°F (32.4°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 'felt air temperature', 'apparent temperature', 'feels like', or 'real feel', is a measure that combines both air temperature and relative humidity into a single value that indicates how hot the weather feels. Additional factors like activity, pregnancy, metabolic differences, and differences in body mass, height, and shape affect individual temperature impact. 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 particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

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

Rainfall

September is the month with the least rainfall. Rain falls for 13 days and accumulates 2.48" (63mm) of precipitation.

Snowfall

In Clarendon, Arkansas, snow does not fall in April through September.

Daylight

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

Sunshine

In Clarendon, the average sunshine in September is 9.6h.

UV index

The average daily maximum UV index in Clarendon is 6. A UV Index value of 6 to 7 symbolizes a high threat to health from unprotected exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 6 in September interpret into the following advice:
Take precautions against overexposure. Protection against sun damage is needed. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the temperature in September in Clarendon?

In September, in Clarendon, the average high-temperature is 83.5°F (28.6°C), and the average low-temperature is 65.7°F (18.7°C). The average heat index (a.k.a. 'real feel', 'apparent temperature'), that combines relative humidity and air temperature, in September is estimated at 90.3°F (32.4°C).

What is the average humidity in September in Clarendon?

The average relative humidity in September in Clarendon, Arkansas, is 73%.

How many days does it rain in September in Clarendon?

In Clarendon, in September, during 13 rainfall days, 2.48" (63mm) of precipitation is typically accumulated.

What is the driest month in Clarendon?

The month with the least rainfall in Clarendon, Arkansas, is September when the rain falls for 13 days and typically collects 2.48" (63mm) of precipitation.

Does it snow in Clarendon in September?

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

When it does not snow in Clarendon?

April through September are months without snowfall in Clarendon.

How many hours of daylight does Clarendon have in September?

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

How long on average sun shines in September in Clarendon?

In September, the average sunshine is 9.6h.

How high is the UV index in September in Clarendon?

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

Average temperature in September
Clarendon, AR

Average temperature in September - Clarendon, AR
  • Average high temperature in September: 83.5°F

The warmest month (with the highest average high temperature) is July (89.8°F).
The month with the lowest average high temperature is January (48.2°F).

  • Average low temperature in September: 65.7°F

The month with the highest average low temperature is July (73°F).
The coldest month (with the lowest average low temperature) is January (34.9°F).

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Average pressure in September
Clarendon, AR

Average pressure in September - Clarendon, 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
Clarendon, AR

Average wind speed in September - Clarendon, AR
  • Average wind speed in September: 5.9mph

The windiest month (with the highest average wind speed) is February (9.4mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).

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Average humidity in September
Clarendon, AR

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

The month with the highest relative humidity is March (78%).
The month with the lowest relative humidity is October (67%).

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Average rainfall in September
Clarendon, AR

Average rainfall in September - Clarendon, AR
  • Average rainfall in September: 2.48"

The wettest month (with the highest rainfall) is April (4.69").
The driest month (with the least rainfall) is September (2.48").

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Average rainfall days in September
Clarendon, AR

Average rainfall days in September - Clarendon, AR
  • Average rainfall days in September: 13 days

The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is October (9.6 days).

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Average snowfall in September
Clarendon, AR

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

The month with the highest snowfall is January (0.79").
Months with the least snowfall are April, May, June, July, August and September (0").

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Average snowfall days in September
Clarendon, AR

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

The month with the highest number of snowfall days is February (1.8 days).
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
Clarendon, AR

Average daylight in September / Average sunshine in September - Clarendon, 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: 9.6h

The month with the most sunshine is June (Average sunshine: 10.8h).
The month with the least sunshine is February (Average sunshine: 4.9h).

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Average sunshine days in September
Clarendon, AR

Average sunshine days in September - Clarendon, AR
  • Average sunshine days in September: 15.3 days

The month with the most sunshine days is October (20.5 days).
The month with the least sunshine days is July (10.5 days).

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Average UV index in September
Clarendon, AR

Average UV index in September - Clarendon, AR
  • Average UV index in September: 6

Months with the highest UV index are June and July (UV index 7).
Months with the lowest UV index are January, February, November and December (UV index 3).

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Average cloud cover in September
Clarendon, AR

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

The month with the most cloud cover is February (Cloud cover 45).
The month with the least cloud cover is June (Cloud cover 24).

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Average visibility in September
Clarendon, AR

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

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

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