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
The shift into September records an average high-temperature of a warm 83.8°F (28.8°C), subtly varied from August's 88.7°F (31.5°C). An average nighttime temperature of 64.9°F (18.3°C) is recorded during September.Heat index
The heat index value for September is evaluated at a hot 91.4°F (33°C). Adopt additional preventive measures, heat cramps and heat exhaustion are potential outcomes. Prolonged activity may trigger heatstroke.Keep in mind the heat index values are meant for areas in shade and with light wind. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is found by incorporating humidity levels into the air temperature measurement. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. Being under direct sunshine can magnify the heat experience, possibly pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.
Humidity
In September, the average relative humidity is 73%.Rainfall
The month with the least rainfall is September, when the rain falls for 11.5 days and typically collects 2.28" (58mm) of precipitation.Snowfall
April through October are months without snowfall.Daylight
In September, the average length of the day is 12h and 23min.On the first day of the month, sunrise is at 6:39 am and sunset at 7:32 pm. On the last day of September, sunrise is at 7:00 am and sunset at 6:50 pm CDT.
Sunshine
In September, the average sunshine is 9.5h.UV index
In Des Arc, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for average individuals.Note: A daily high UV index of 6 in September leads to these guidelines:
Resist extreme sun exposure. Guarding against solar damage is essential. 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. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in September?
What is the average humidity in September?
What is the driest month?
How much does it rain in September?
When it does not snow in Des Arc?
How many hours of daylight does Des Arc have in September?
When are sunrise and sunset in September?
How many hours of sunshine does Des Arc have in September?
How high is the UV index in September?
Average temperature in September
Des Arc, AR
- Average high temperature in September: 83.8°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 (47.3°F).
- Average low temperature in September: 64.9°F
The month with the highest average low temperature is July (72.7°F).
The coldest month (with the lowest average low temperature) is January (34.2°F).
Average pressure in September
Des Arc, AR
- Average pressure in September: 30"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in September
Des Arc, AR
- Average wind speed in September: 6.1mph
The windiest month (with the highest average wind speed) is February (9.4mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).
Average humidity in September
Des Arc, 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%).
Average rainfall in September
Des Arc, AR
- Average rainfall in September: 2.28"
The wettest month (with the highest rainfall) is April (4.17").
The driest month (with the least rainfall) is September (2.28").
Average rainfall days in September
Des Arc, AR
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is May (15.5 days).
The months with the least rainy days are October and November (9.6 days).
Average snowfall in September
Des Arc, AR
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.79").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Des Arc, AR
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (1.5 days).
The months with the least snowfall days are April, May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Des Arc, 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 54min).
- Average sunshine in September: 9h and 3min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in September
Des Arc, AR
- Average sunshine days in September: 17.3 days
The month with the most sunshine days is October (20.4 days).
The month with the least sunshine days is July (13.5 days).
Average UV index in September
Des Arc, AR
- Average UV index in September: 6
The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in September
Des Arc, AR
- Average cloud cover in September: 29
The month with the most cloud cover is February (Cloud cover 46).
The months with the least cloud cover are June and August (Cloud cover 26).
Average visibility in September
Des Arc, 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).
Des Arc, Arkansas, USA
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