September weather forecast
Viola, AR

Share

Weather in September

The first month of the autumn, September, is still a warm month in Viola, Arkansas, with an average temperature varying between 61.5°F (16.4°C) and 81.9°F (27.7°C).

Temperature

Viola's transition into September involves a gentle shift in temperature, receding from a tropical 88.7°F (31.5°C) in August to a warm 81.9°F (27.7°C). An average low-temperature of 61.5°F (16.4°C) is recorded during the nights in September in Viola, Arkansas.

Heat index

Throughout September, the heat index is calculated to be a hot 87.8°F (31°C). A sense of exhaustion might occur with extended exposure and activity, potentially causing heat cramps.
Consider that heat index readings are for situations in the shade and light wind. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. Keep it in mind, direct sunlight can augment the heat you experience, possibly pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance 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 September, the average relative humidity is 74%.

Rainfall

September is the month with the least rainfall. Rain falls for 11.9 days and accumulates 1.73" (44mm) of precipitation.

Snowfall

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

Daylight

In September, the average length of the day in Viola is 12h and 24min.
On the first day of September, sunrise is at 6:39 am and sunset at 7:35 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 6:52 pm CDT.

Sunshine

In Viola, the average sunshine in September is 9.5h.

UV index

In Viola, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 5 in September transforms into the following instructions:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
[Resources]

Frequently asked questions

What are September temperatures in Viola?

In September, the average high-temperature and low-temperature in Viola are 81.9°F (27.7°C) and 61.5°F (16.4°C) respectively. The average heat index (a.k.a. 'apparent temperature', 'real feel'), which combines air temperature and relative humidity, in September is calculated to be 87.8°F (31°C).

What is the average humidity in September in Viola?

In September, the average relative humidity in Viola, Arkansas, is 74%.

What is the driest month in Viola?

September is the month with the least rainfall in Viola. Rain falls for 11.9 days and accumulates 1.73" (44mm) of precipitation.

How much does it rain in Viola in September?

In September, in Viola, Arkansas, the rain falls for 11.9 days. Throughout September, 1.73" (44mm) of precipitation is accumulated.

When it does not snow in Viola?

In Viola, snow does not fall in April through October.

How many hours of daylight does Viola have in September?

In September, the average day length in Viola is 12h and 24min.

What time are sunrise and sunset in September in Viola?

On the first day of September in Viola, Arkansas, sunrise is at 6:39 am and sunset at 7:35 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 6:52 pm CDT.

How many hours of sunshine does Viola have in September?

The average sunshine duration in September is 9.5h.

How high is the UV index in September in Viola?

The average daily maximum UV index in September in Viola is 5. A UV Index estimate of 3 to 5 represents a moderate health threat from 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
Viola, AR

Average temperature in September - Viola, AR
  • Average high temperature in September: 81.9°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 (44.1°F).

  • Average low temperature in September: 61.5°F

The month with the highest average low temperature is July (69.3°F).
The coldest month (with the lowest average low temperature) is January (29.7°F).

[Resources]

Average pressure in September
Viola, AR

Average pressure in September - Viola, AR
  • Average pressure in September: 30.02"Hg

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

[Resources]

Average wind speed in September
Viola, AR

Average wind speed in September - Viola, AR
  • Average wind speed in September: 5.6mph

The windiest months (with the highest average wind speed) are January, March and April (8.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.3mph).

[Resources]

Average humidity in September
Viola, AR

Average humidity in September - Viola, AR
  • Average humidity in September: 74%

The months with the highest relative humidity are March and May (79%).
The month with the lowest relative humidity is October (71%).

[Resources]

Average rainfall in September
Viola, AR

Average rainfall in September - Viola, AR
  • Average rainfall in September: 1.73"

The wettest month (with the highest rainfall) is April (4.21").
The driest month (with the least rainfall) is September (1.73").

[Resources]

Average rainfall days in September
Viola, AR

Average rainfall days in September - Viola, AR
  • Average rainfall days in September: 11.9 days

The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is January (8.7 days).

[Resources]

Average snowfall in September
Viola, AR

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

The month with the highest snowfall is February (1.46").
The months with the least snowfall are April, May, June, July, August, September and October (0").

[Resources]

Average snowfall days in September
Viola, AR

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

The month with the highest number of snowfall days is February (3.2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

[Resources]

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

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

The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).

  • Average sunshine in September: 9h and 3min

The month with the most sunshine is June (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).

[Resources]

Average sunshine days in September
Viola, AR

Average sunshine days in September - Viola, AR
  • Average sunshine days in September: 15.6 days

The month with the most sunshine days is December (20 days).
The month with the least sunshine days is July (12.7 days).

[Resources]

Average UV index in September
Viola, AR

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

The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January and December (UV index 2).

[Resources]

Average cloud cover in September
Viola, AR

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

The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is June (Cloud cover 26).

[Resources]

Average visibility in September
Viola, AR

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

The 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).

[Resources]

Viola, Arkansas, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location