September weather forecast and climate
Dyer, AR

Weather in September

The first month of the autumn, September, is still a warm month in Dyer, Arkansas, with average temperature ranging between min 63°F (17.2°C) and max 84.4°F (29.1°C).

Temperature

In September, the average high-temperature slightly decreases, from a hot 91.6°F (33.1°C) in August, to a moderately hot 84.4°F (29.1°C). In September, the average low-temperature is 63°F (17.2°C).

Heat index

In September, the average heat index is estimated at a tropical 91.9°F (33.3°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 'apparent temperature', 'real feel', 'felt air temperature', or 'feels like', is a measure of how hot it feels when the actual air humidity is factored in. Additional factors like activity, pregnancy, wind, and clothing 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 especially crucial for babies and toddlers. 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

The average relative humidity in September is 72%.

Rainfall

In Dyer, during 9.5 rainfall days, 2.6" (66mm) of precipitation is typically accumulated. In Dyer, Arkansas, during the entire year, the rain falls for 134.2 days and collects up to 33.86" (860mm) of precipitation.

Snowfall

April through October are months without snowfall.

Daylight

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

Sunshine

In September, the average sunshine is 9.3h.

UV index

The average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to the UV radiation for the average person.
Note: In September, the average maximum UV index of 5 translate into the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. 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 Dyer?

The average high-temperature, in September, in Dyer, Arkansas, is 84.4°F (29.1°C), while the average low-temperature is 63°F (17.2°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), that factores the actual air temperature with the relative humidity, in September is evaluated at 91.9°F (33.3°C).

What is the average humidity in September in Dyer?

The average relative humidity in September in Dyer, Arkansas, is 72%.

How much does it rain in Dyer in September?

In Dyer, Arkansas, in September, it is raining for 9.5 days, with typically 2.6" (66mm) of accumulated precipitation.

When it does not snow in Dyer?

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

How many hours of daylight does Dyer have in September?

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

How long on average sun shines in September in Dyer?

In September, the average sunshine is 9.3h.

What is the UV index reading in September in Dyer?

The average daily maximum UV index in September in Dyer, Arkansas, is 5. A UV Index of 3 to 5 symbolizes a medium health risk from the exposure to the Sun's UV rays.

Average temperature in September
Dyer, AR

Average temperature in September - Dyer, AR
  • Average high temperature in September: 84.4°F

The warmest month (with the highest average high temperature) is July (93°F).
The month with the lowest average high temperature is January (47.5°F).

  • Average low temperature in September: 63°F

The month with the highest average low temperature is July (70°F).
The coldest month (with the lowest average low temperature) is January (31.1°F).

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Average pressure in September
Dyer, AR

Average pressure in September - Dyer, AR
  • Average pressure in September: 30.01"

The month with the highest atmospheric pressure is January (30.17").
The month with the lowest atmospheric pressure is June (29.93").

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Average wind speed in September
Dyer, AR

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

The windiest month (with the highest average wind speed) is April (7mph).
The calmest month (with the lowest average wind speed) is July (4.5mph).

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Average humidity in September
Dyer, AR

Average humidity in September - Dyer, AR
  • Average humidity in September: 72%

The month with the highest relative humidity is May (78%).
Months with the lowest relative humidity are July and August (70%).

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Average rainfall in September
Dyer, AR

Average rainfall in September - Dyer, AR
  • Average rainfall in September: 2.6"

The wettest month (with the highest rainfall) is May (4.45").
The driest month (with the least rainfall) is January (2.05").

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Average rainfall days in September
Dyer, AR

Average rainfall days in September - Dyer, AR
  • Average rainfall days in September: 9.5 days

The month with the highest number of rainy days is March (14.8 days).
The month with the least rainy days is November (8.5 days).

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Average snowfall in September
Dyer, AR

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

The month with the highest snowfall is February (0.59").
Months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in September
Dyer, AR

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

The month with the highest number of snowfall days is January (1.5 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
Dyer, AR

Average daylight in September / Average sunshine in September - Dyer, 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: 9.3h

The month with the most sunshine is July (Average sunshine: 10.7h).
The month with the least sunshine is January (Average sunshine: 5.4h).

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Average sunshine days in September
Dyer, AR

Average sunshine days in September - Dyer, AR
  • Average sunshine days in September: 18.5 days

The month with the most sunshine days is December (20.4 days).
Months with the least sunshine days are April and May (14.3 days).

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Average UV index in September
Dyer, AR

Average UV index in September - Dyer, 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
Dyer, AR

Average cloud cover in September - Dyer, AR
  • Average cloud cover in September: 29

Months with the most cloud cover are February and March (Cloud cover 45).
The month with the least cloud cover is August (Cloud cover 25).

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Average visibility in September
Dyer, AR

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

Months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).

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