September weather forecastLight, AR
September
Weather in September
September brings the first hints of autumn to Light, Arkansas, with temperatures starting to descend. Shades of orange and yellow start to dominate the green foliage as trees prepare for the incoming fall. Sunny days continue to abound, despite the reduction in daylight hours. The outdoor weather remains enjoyable as the scorching summer heat mellows down. The lowest wind speed of 6.2mph (10km/h) is observed in September, contributing to the calmness of early autumn.Temperature
September ushers in a minute temperature change, with average high-temperatures reducing from August's hot 87.6°F (30.9°C) to a moderately hot 82°F (27.8°C). Light reports an average nighttime low-temperature of 63.5°F (17.5°C) in September.Heat index
The average heat index in September is evaluated at a hot 87.8°F (31°C). Enduring exposure and ongoing activity could cause a sense of fatigue and subsequent heat cramps.Heat index guidelines indicate values are for light wind scenarios and shaded regions. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', reflects the feeling of heat when considering both air temperature and humidity. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
Humidity
In Light, the average relative humidity in September is 73%.Rainfall
The month with the least rainfall is September, when the rain falls for 12.3 days and typically collects 2.24" (57mm) of precipitation.Snowfall
In Light, snow does not fall in April through September.Daylight
In Light, the average length of the day in September is 12h and 23min.On the first day of September, sunrise is at 6:35 am and sunset at 7:30 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 6:47 pm CDT.
Sunshine
The average sunshine in September is 9.7h.UV index
The average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.Note: The UV index of 5 during September translates into the following guidance:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Light, AR
- Average high temperature in September: 82°F
The warmest month (with the highest average high temperature) is July (89.2°F).
The month with the lowest average high temperature is January (44.4°F).
- Average low temperature in September: 63.5°F
The month with the highest average low temperature is July (71.6°F).
The coldest month (with the lowest average low temperature) is January (31.1°F).
Average pressure in September
Light, 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
Light, AR
- Average wind speed in September: 6.2mph
The windiest month (with the highest average wind speed) is February (9.3mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).
Average humidity in September
Light, 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 (68%).
Average rainfall in September
Light, AR
- Average rainfall in September: 2.24"
The wettest month (with the highest rainfall) is April (4.76").
The driest month (with the least rainfall) is September (2.24").
Average rainfall days in September
Light, AR
- Average rainfall days in September: 12.3 days
The month with the highest number of rainy days is May (16.9 days).
The month with the least rainy days is November (8.9 days).
Average snowfall in September
Light, AR
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.42").
The months with the least snowfall are April, May, June, July, August and September (0").
Average snowfall days in September
Light, AR
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.1 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
Light, AR
- Average daylight in September: 12h and 24min
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 48min).
- Average sunshine in September: 9h and 42min
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).
Average sunshine days in September
Light, AR
- Average sunshine days in September: 15.7 days
The month with the most sunshine days is October (19.6 days).
The month with the least sunshine days is July (12.3 days).
Average UV index in September
Light, AR
- Average UV index in September: 5
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in September
Light, AR
- Average cloud cover in September: 27
The months with the most cloud cover are February and March (Cloud cover 45).
The month with the least cloud cover is June (Cloud cover 24).
Average visibility in September
Light, 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).
