September weather forecast and climate
Marvell, AR

Weather in September

The first month of the autumn, September, is also a moderately hot month in Marvell, Arkansas, with temperature in the range of an average low of 65.8°F (18.8°C) and an average high of 83.8°F (28.8°C).

Temperature

In September, the average high-temperature is relatively the same as in August - a warm 83.8°F (28.8°C). In September, in Marvell, Arkansas, the average low-temperature is 65.8°F (18.8°C).

Heat index

In September, the average heat index is appraised at a tropical 91°F (32.8°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
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 'apparent temperature', 'felt air temperature', 'real feel', or 'feels like', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. Additional factors like metabolic differences, wind, clothing, and activity influence one's weather impression. 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 September, the average relative humidity in Marvell is 73%.

Rainfall

In September, in Marvell, Arkansas, the rain falls for 10.8 days. Throughout September, 1.42" (36mm) of precipitation is accumulated. Throughout the year, in Marvell, there are 132.5 rainfall days, and 22.8" (579mm) of precipitation is accumulated.

Snowfall

In Marvell, Arkansas, snow does not fall in April through October.

Daylight

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

Sunshine

In September, the average sunshine in Marvell, Arkansas, is 9.6h.

UV index

The average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health hazard from unsafe exposure to the UV radiation for the average person.
Note: The average daily UV index of 6 transform into the following instructions:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. 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.
[Resources]

FAQ

What is the temperature in September in Marvell?

The average high-temperature, in September, in Marvell, Arkansas, is 83.8°F (28.8°C), while the average low-temperature is 65.8°F (18.8°C). In September, the average heat index (a.k.a. 'apparent temperature', 'real feel'), that represents influence of the relative humidity to air temperaure, is evaluated at 91°F (32.8°C).

What is the average humidity in September in Marvell?

The average relative humidity in September is 73%.

How much does it rain in Marvell in September?

In Marvell, in September, during 10.8 rainfall days, 1.42" (36mm) of precipitation is typically accumulated.

When it does not snow in Marvell?

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

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

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

How many hours of sunshine does Marvell have in September?

In Marvell, Arkansas, the average sunshine in September is 9.6h.

What is the UV index intensity in September in Marvell?

In Marvell, Arkansas, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to the Sun's UV rays.

Average temperature in September
Marvell, AR

Average temperature in September - Marvell, AR
  • Average high temperature in September: 83.8°F

The warmest month (with the highest average high temperature) is July (89.4°F).
The month with the lowest average high temperature is January (48.2°F).

  • Average low temperature in September: 65.8°F

The month with the highest average low temperature is July (73°F).
The coldest month (with the lowest average low temperature) is January (35.4°F).

[Resources]

Average pressure in September
Marvell, AR

Average pressure in September - Marvell, 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").

[Resources]

Average wind speed in September
Marvell, AR

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

The windiest month (with the highest average wind speed) is February (9.5mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

[Resources]

Average humidity in September
Marvell, AR

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

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

[Resources]

Average rainfall in September
Marvell, AR

Average rainfall in September - Marvell, AR
  • Average rainfall in September: 1.42"

The wettest month (with the highest rainfall) is April (2.72").
The driest month (with the least rainfall) is November (1.22").

[Resources]

Average rainfall days in September
Marvell, AR

Average rainfall days in September - Marvell, AR
  • Average rainfall days in September: 10.8 days

The month with the highest number of rainy days is July (15 days).
The month with the least rainy days is November (7.7 days).

[Resources]

Average snowfall in September
Marvell, AR

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

The month with the highest snowfall is February (0.47").
Months with the least snowfall are April, May, June, July, August, September and October (0").

[Resources]

Average snowfall days in September
Marvell, AR

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

The month with the highest number of snowfall days is February (1.3 days).
Months with the least snowfall days are April, May, June, July, August and September (0 days).

[Resources]

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

Average daylight in September / Average sunshine in September - Marvell, AR
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.4h).
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: 10.7h).
The month with the least sunshine is February (Average sunshine: 4.8h).

[Resources]

Average sunshine days in September
Marvell, AR

Average sunshine days in September - Marvell, AR
  • Average sunshine days in September: 16.5 days

The month with the most sunshine days is October (21.8 days).
The month with the least sunshine days is July (13.3 days).

[Resources]

Average UV index in September
Marvell, AR

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

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

[Resources]

Average cloud cover in September
Marvell, AR

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

The month with the most cloud cover is February (Cloud cover 46).
The month with the least cloud cover is June (Cloud cover 25).

[Resources]

Average visibility in September
Marvell, AR

Average visibility in September - Marvell, 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).

[Resources]