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
As August shifts into September, a minor alteration in temperatures is observed, with average highs reducing from 92.8°F (33.8°C) to a still tropical 86.7°F (30.4°C). Dalark marks a considerable descent from the daytime apex, as the average temperature dips to a refreshing 64.9°F (18.3°C) at night throughout September.Heat index
September's mean heat index is estimated at a very hot 96.8°F (36°C). Exercise more precautions, heat cramps and heat exhaustion are potential risks. Continuous activity could precipitate heatstroke.Realize that the values for the heat index are set for shaded places and light winds. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'apparent temperature' or 'real feel', comes about by integrating the temperature readings with the humidity levels. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.
The body's natural response to excessive warmth is perspiration, as it allows for cooling through sweat evaporation. An increase in relative humidity disrupts body cooling by slowing the evaporation rate, thereby reducing the rate at which the body cools and amplifying the sense of heat. Should the body fail to balance its heat gain, the escalating temperature poses health challenges.
Humidity
The months with the lowest humidity are July through October, with an average relative humidity of 71%.Rainfall
The month with the least rainfall is September, when the rain falls for 10.6 days and typically collects 1.14" (29mm) of precipitation.Snowfall
March through December are months without snowfall.Daylight
In Dalark, the average length of the day in September is 12h and 22min.On the first day of September, sunrise is at 6:45 am and sunset at 7:36 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 6:56 pm CDT.
Sunshine
In September, the average sunshine is 9.5h.UV index
In Dalark, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the ordinary person.Note: In September, the average maximum UV index of 6 translates into the following recommendations:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot during September?
What are the least humid months?
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?
How many hours of daylight does Dalark have in September?
When is the sunrise / sunset in September?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
Dalark, AR
- Average high temperature in September: 86.7°F
The warmest month (with the highest average high temperature) is July (93.2°F).
The month with the lowest average high temperature is January (50.5°F).
- Average low temperature in September: 64.9°F
The month with the highest average low temperature is July (71.8°F).
The coldest month (with the lowest average low temperature) is January (34.3°F).
Average pressure in September
Dalark, 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
Dalark, AR
- Average wind speed in September: 4.9mph
The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in September
Dalark, AR
- Average humidity in September: 71%
The months with the highest relative humidity are February, March and December (80%).
The months with the lowest relative humidity are July, August, September and October (71%).
Average rainfall in September
Dalark, AR
- Average rainfall in September: 1.14"
The wettest month (with the highest rainfall) is April (2.52").
The driest month (with the least rainfall) is September (1.14").
Average rainfall days in September
Dalark, AR
- Average rainfall days in September: 10.6 days
The month with the highest number of rainy days is August (14.3 days).
The month with the least rainy days is October (7.9 days).
Average snowfall in September
Dalark, AR
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.43").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Dalark, AR
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.6 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Dalark, AR
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 24min).
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 July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 5h and 6min).
Average sunshine days in September
Dalark, AR
- Average sunshine days in September: 17 days
The month with the most sunshine days is October (21.8 days).
The month with the least sunshine days is August (13.8 days).
Average UV index in September
Dalark, AR
- Average UV index in September: 6
The 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).
Average cloud cover in September
Dalark, AR
- Average cloud cover in September: 29
The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is June (Cloud cover 28).
Average visibility in September
Dalark, AR
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, May and December (5mi).
Dalark, Arkansas, USA
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