September weather forecastJasper, AR
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Jasper, Arkansas, with an average temperature varying between 59.7°F (15.4°C) and 81.1°F (27.3°C).Temperature
Jasper, Arkansas, observes a small decrease in the average high-temperature with the arrival of September, falling from August's tropical 88°F (31.1°C) to a warm 81.1°F (27.3°C). Throughout September, Jasper witnesses a consistent average low-temperature of 59.7°F (15.4°C).Heat index
During September, the heat index is evaluated at a hot 86°F (30°C). If exposure and ongoing activity persist, they might induce a state of tiredness and heat cramps.Be aware that heat index ratings are designed for shaded locations and minor breezes. If exposed to direct sunlight, the heat index could climb by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is achieved by amalgamating air temperature with the relative humidity readings. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.
Humidity
In September, the average relative humidity is 75%.Rainfall
In Jasper, in September, during 13.5 rainfall days, 2.09" (53mm) of precipitation is typically accumulated. Throughout the year, in Jasper, there are 145.6 rainfall days, and 31.89" (810mm) of precipitation is accumulated.Snowfall
June through October are months without snowfall in Jasper.Daylight
In Jasper, the average length of the day in September is 12h and 23min.On the first day of September in Jasper, sunrise is at 6:45 am and sunset at 7:39 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 6:57 pm CDT.
Sunshine
The average sunshine in September is 9.2h.UV index
In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.Note: In September, a regular UV index of 5 translates into these guidelines:
Adopt protective measures - It is advised to guard against sun damage. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Jasper, AR
- Average high temperature in September: 81.1°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 (44.2°F).
- Average low temperature in September: 59.7°F
The month with the highest average low temperature is July (67.8°F).
The coldest month (with the lowest average low temperature) is January (28.6°F).
Average pressure in September
Jasper, AR
- Average pressure in September: 30.02"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
Jasper, AR
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is April (8mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in September
Jasper, AR
- Average humidity in September: 75%
The months with the highest relative humidity are March and May (78%).
The months with the lowest relative humidity are January and October (73%).
Average rainfall in September
Jasper, AR
- Average rainfall in September: 2.09"
The wettest month (with the highest rainfall) is May (3.94").
The driest months (with the least rainfall) are January and February (1.97").
Average rainfall days in September
Jasper, AR
- Average rainfall days in September: 13.5 days
The month with the highest number of rainy days is July (16.8 days).
The month with the least rainy days is December (7.5 days).
Average snowfall in September
Jasper, AR
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.36").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in September
Jasper, AR
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (4.2 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Jasper, 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 12min
The month with the most sunshine is June (Average sunshine: 10h and 48min).
The months with the least sunshine are January and February (Average sunshine: 5h and 30min).
Average sunshine days in September
Jasper, AR
- Average sunshine days in September: 14.4 days
The month with the most sunshine days is December (21.3 days).
The month with the least sunshine days is July (11.4 days).
Average UV index in September
Jasper, AR
- Average UV index in September: 5
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in September
Jasper, AR
- Average cloud cover in September: 30
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is June (Cloud cover 27).
Average visibility in September
Jasper, AR
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
