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 beginning of September, the average high-temperature shows a small decrease, transitioning from a tropical 92.5°F (33.6°C) in August to a warm 85.8°F (29.9°C). In September, the average low-temperature is a refreshing 64.9°F (18.3°C).Heat index
The average heat index in September is computed to be a fiery hot 95°F (35°C). Ensure extra safety steps, heat exhaustion and heat cramps are likely. Long activity might lead to heatstroke.Understanding the heat index involves considering values for shaded locales with light wind. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', determines the feeling of heat when you account for the relative humidity. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.
In response to overheating, the human body perspires to cool down, mainly through the evaporation of sweat. An elevated level of relative humidity hinders evaporation, leading to decreased heat elimination from the body, inducing a sensation of excess heat. Elevated heat gain compared to the body's release capability poses risks of dehydration and potential overheating.
Humidity
In Nathan, the average relative humidity in September is 72%.Rainfall
In September, the rain falls for 11.8 days. Throughout September, 2.36" (60mm) of precipitation is accumulated. In Nathan, Arkansas, during the entire year, the rain falls for 149.1 days and collects up to 37.4" (950mm) of precipitation.Snowfall
April through November are months without snowfall.Daylight
The average length of the day in September is 12h and 22min.On the first day of September, sunrise is at 6:49 am and sunset at 7:40 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 7:00 pm CDT.
Sunshine
The average sunshine in September is 9.3h.UV index
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 rays for average individuals.Note: The UV index of 6 during September translates into the following guidance:
Shun overexposure. Protection from sun ravages is indispensable. 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. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
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?
How many days does it rain in September?
When it does not snow?
What is the average length of the day in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Nathan have in September?
How high is the UV index in September?
Average temperature in September
Nathan, AR
- Average high temperature in September: 85.8°F
The warmest month (with the highest average high temperature) is July (92.8°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 (71.6°F).
The coldest month (with the lowest average low temperature) is January (34.3°F).
Average pressure in September
Nathan, AR
- Average pressure in September: 30"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Nathan, AR
- Average wind speed in September: 5.1mph
The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in September
Nathan, AR
- Average humidity in September: 72%
The months with the highest relative humidity are February and March (80%).
The month with the lowest relative humidity is August (70%).
Average rainfall in September
Nathan, AR
- Average rainfall in September: 2.36"
The wettest month (with the highest rainfall) is May (4.37").
The driest month (with the least rainfall) is January (2.24").
Average rainfall days in September
Nathan, AR
- Average rainfall days in September: 11.8 days
The month with the highest number of rainy days is May (15.4 days).
The month with the least rainy days is November (9.5 days).
Average snowfall in September
Nathan, AR
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.55").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Nathan, AR
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is January (1.3 days).
The months with the least snowfall days are April, May, June, July, August and October (0 days).
Average daylight in September /
Average sunshine in September
Nathan, 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 2min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The months with the least sunshine are February and December (Average sunshine: 5h and 6min).
Average sunshine days in September
Nathan, AR
- Average sunshine days in September: 16.8 days
The month with the most sunshine days is January (19.7 days).
The month with the least sunshine days is February (13.9 days).
Average UV index in September
Nathan, AR
- Average UV index in September: 6
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in September
Nathan, AR
- Average cloud cover in September: 30
The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in September
Nathan, AR
- Average visibility in September: 6mi
The months with the highest visibility are April, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March, May and December (5mi).
Nathan, Arkansas, USA
Weather forecast for your location
2. Allow the app to use your location