September weather forecast and climate
Patterson, AR

Weather in September

September, the first month of the autumn, in Patterson, is still a warm month, with temperature in the range of an average high of 83.3°F (28.5°C) and an average low of 64.8°F (18.2°C).

Temperature

In September, the average high-temperature is practically the same as in August - a warm 83.3°F (28.5°C). In Patterson, the average low-temperature is 64.8°F (18.2°C).

Heat index

In September, the average heat index is calculated to a hot 90°F (32.2°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With the 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 'felt air temperature', 'apparent temperature', 'real feel', or 'feels like', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. Additional factors like activity, metabolic differences, pregnancy, and wind affect individual temperature impact. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index 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 Patterson, the average relative humidity is 73%.

Rainfall

September is the month with the least rainfall in Patterson. Rain falls for 8.6 days and accumulates 0.63" (16mm) of precipitation.

Snowfall

April through October are months without snowfall in Patterson.

Daylight

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

Sunshine

In September, the average sunshine is 9.9h.

UV index

The average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from the exposure to the Sun's UV radiation for the ordinary person.
Note: In September, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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 Patterson?

In Patterson, in September, the average high-temperature is 83.3°F (28.5°C), and the average low-temperature is 64.8°F (18.2°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), that combines relative humidity and air temperature, in September is evaluated at 90°F (32.2°C).

What is the average humidity in September in Patterson?

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

How much does it rain in Patterson in September?

In September, in Patterson, the rain falls for 8.6 days. Throughout September, 0.63" (16mm) of precipitation is accumulated.

What is the driest month in Patterson?

The month with the least rainfall in Patterson, Arkansas, is September when the rain falls for 8.6 days and typically collects 0.63" (16mm) of precipitation.

When it does not snow in Patterson?

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

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

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

How many hours of sunshine does Patterson have in September?

The average sunshine in September is 9.9h.

What is the UV index reading in September in Patterson?

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

Average temperature in September
Patterson, AR

Average temperature in September - Patterson, AR
  • Average high temperature in September: 83.3°F

The warmest month (with the highest average high temperature) is July (89.2°F).
The month with the lowest average high temperature is January (46.9°F).

  • Average low temperature in September: 64.8°F

The month with the highest average low temperature is July (72.1°F).
The coldest month (with the lowest average low temperature) is January (33.4°F).

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Average pressure in September
Patterson, AR

Average pressure in September - Patterson, 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
Patterson, AR

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

The windiest month (with the highest average wind speed) is February (9.5mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).

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Average humidity in September
Patterson, AR

Average humidity in September - Patterson, 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
Patterson, AR

Average rainfall in September - Patterson, AR
  • Average rainfall in September: 0.63"

The wettest months (with the highest rainfall) are April and May (1.57").
The driest month (with the least rainfall) is September (0.63").

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Average rainfall days in September
Patterson, AR

Average rainfall days in September - Patterson, AR
  • Average rainfall days in September: 8.6 days

The month with the highest number of rainy days is July (13.7 days).
The month with the least rainy days is January (7 days).

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Average snowfall in September
Patterson, AR

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

Months with the highest snowfall are January and February (0.16").
Months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in September
Patterson, AR

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

Months with the highest number of snowfall days are January and February (1.1 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
Patterson, AR

Average daylight in September / Average sunshine in September - Patterson, 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: 9.8h).

  • Average sunshine in September: 9.9h

The month with the most sunshine is June (Average sunshine: 10.9h).
The month with the least sunshine is February (Average sunshine: 5h).

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Average sunshine days in September
Patterson, AR

Average sunshine days in September - Patterson, AR
  • Average sunshine days in September: 17.9 days

Months with the most sunshine days are January and October (21.9 days).
The month with the least sunshine days is July (13.6 days).

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Average UV index in September
Patterson, AR

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

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
Patterson, AR

Average cloud cover in September - Patterson, AR
  • Average cloud cover in September: 27

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
Patterson, AR

Average visibility in September - Patterson, 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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