Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
With the onset of September, the average high-temperature subtly recedes from August's hot 88.7°F (31.5°C) to a moderately hot 82.4°F (28°C). During September, Marcella's temperature averages to a refreshing 62.8°F (17.1°C) at night.Heat index
The heat index value for September is estimated at a hot 87.8°F (31°C). One might feel worn out with persistent exposure and activity, resulting in heat cramps.It is crucial to understand that heat index figures are for shade and gentle wind conditions. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', gauges the sensation of temperature factoring in the air's moisture content. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.
Humidity
The average relative humidity in September is 74%.Rainfall
The month with the least rainfall is September, when the rain falls for 12.8 days and typically collects 2.28" (58mm) of precipitation.Snowfall
April through October are months without snowfall.Daylight
The average length of the day in September is 12h and 23min.On the first day of September, sunrise is at 6:40 am and sunset at 7:34 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 6:52 pm CDT.
Sunshine
The average sunshine in September is 9.6h.UV index
The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The daily high UV index of 5 in September translates into this advice:
Heed the precautions - Suggestions to avoid sunburn are made. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is September?
What is the average humidity in September?
What is the driest month?
How many days does it rain in September?
When it does not snow?
What is the average length of the day in September in Marcella?
What time are sunrise and sunset in September?
How many hours of sunshine does Marcella have in September?
How high is the UV index in September in Marcella?
Average temperature in September
Marcella, AR
- Average high temperature in September: 82.4°F
The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is January (45.1°F).
- Average low temperature in September: 62.8°F
The month with the highest average low temperature is July (70.5°F).
The coldest month (with the lowest average low temperature) is January (31.5°F).
Average pressure in September
Marcella, AR
- Average pressure in September: 30.01"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).
Average wind speed in September
Marcella, AR
- Average wind speed in September: 5.3mph
The windiest month (with the highest average wind speed) is February (8.4mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in September
Marcella, 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 (70%).
Average rainfall in September
Marcella, AR
- Average rainfall in September: 2.28"
The wettest month (with the highest rainfall) is April (4.8").
The driest month (with the least rainfall) is September (2.28").
Average rainfall days in September
Marcella, AR
- Average rainfall days in September: 12.8 days
The month with the highest number of rainy days is July (17.6 days).
The month with the least rainy days is January (9 days).
Average snowfall in September
Marcella, AR
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.1").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Marcella, AR
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (2.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Marcella, AR
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in September: 9h and 4min
The months with the most sunshine are June and July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 6min).
Average sunshine days in September
Marcella, AR
- Average sunshine days in September: 14.8 days
The months with the most sunshine days are November and December (19.1 days).
The month with the least sunshine days is July (11.1 days).
Average UV index in September
Marcella, 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).
Average cloud cover in September
Marcella, AR
- Average cloud cover in September: 28
The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is June (Cloud cover 25).
Average visibility in September
Marcella, AR
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Marcella, Arkansas, USA
Weather forecast for your location
2. Allow the app to use your location