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 beginning of September brings a slight decrease in the average high-temperature, transitioning from a tropical 93.4°F (34.1°C) in August to a still hot 87.6°F (30.9°C). Despite the significant gap from daytime peaks, Rosston experiences an average low-temperature of 66°F (18.9°C) in September.Heat index
In September, the average heat index is calculated to be a torrid 100.4°F (38°C). Take more preventive steps, risk of heat exhaustion and heat cramps is elevated. Long activity may culminate in heatstroke.Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', gives an indication of how one might feel in terms of heat after considering humidity. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.
In the face of high temperatures, the human body's reflex is to perspire, leveraging sweat evaporation for cooling. In circumstances of high air temperature and humidity (high heat index), the body's perspiration is restricted, heightening the feeling of warmth. The body faces dehydration threats when its cooling efforts are outpaced by excessive heat gain.
Humidity
In September, the average relative humidity is 71%.Rainfall
September is the month with the least rainfall. Rain falls for 12.3 days and accumulates 2.09" (53mm) of precipitation.Snowfall
In Rosston, snow does not fall in April through October and December.Daylight
The average length of the day in September in Rosston is 12h and 22min.On the first day of the month, sunrise is at 6:47 am and sunset at 7:38 pm. On the last day of September, sunrise is at 7:07 am and sunset at 6:58 pm CDT.
Sunshine
In September, the average sunshine is 9.5h.UV index
The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: In September, a daily maximum UV index of 5 leads to the following instructions:
Make use of precautions - Suggestions to resist sunburn are communicated. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot during September?
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 Rosston have in September?
When are sunrise and sunset in September?
How many hours of sunshine does Rosston have in September?
What is the UV index reading in September?
Average temperature in September
Rosston, AR
- Average high temperature in September: 87.6°F
The warmest months (with the highest average high temperature) are July and August (93.4°F).
The month with the lowest average high temperature is January (51.8°F).
- Average low temperature in September: 66°F
The month with the highest average low temperature is July (72.9°F).
The coldest month (with the lowest average low temperature) is January (36.5°F).
Average pressure in September
Rosston, AR
- Average pressure in September: 29.99"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in September
Rosston, AR
- Average wind speed in September: 5mph
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
Rosston, AR
- Average humidity in September: 71%
The months with the highest relative humidity are February and December (81%).
The month with the lowest relative humidity is August (70%).
Average rainfall in September
Rosston, AR
- Average rainfall in September: 2.09"
The wettest month (with the highest rainfall) is April (5.08").
The driest month (with the least rainfall) is September (2.09").
Average rainfall days in September
Rosston, AR
- Average rainfall days in September: 12.3 days
The month with the highest number of rainy days is July (15.6 days).
The month with the least rainy days is October (10.3 days).
Average snowfall in September
Rosston, AR
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.59").
The months with the least snowfall are April, May, June, July, August, September, October and December (0").
Average snowfall days in September
Rosston, AR
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.5 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
Rosston, AR
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in September: 9h and 3min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).
Average sunshine days in September
Rosston, AR
- Average sunshine days in September: 16.2 days
The month with the most sunshine days is October (19.2 days).
The month with the least sunshine days is February (13 days).
Average UV index in September
Rosston, AR
- Average UV index in September: 5
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
Rosston, AR
- Average cloud cover in September: 28
The month with the most cloud cover is February (Cloud cover 51).
The months with the least cloud cover are August and September (Cloud cover 28).
Average visibility in September
Rosston, AR
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).
Rosston, Arkansas, USA
Weather forecast for your location
2. Allow the app to use your location