September weather forecastBelleville, AR
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Belleville, Arkansas, with an average temperature fluctuating between 84.6°F (29.2°C) and 62.2°F (16.8°C).Temperature
The arrival of September is marked by a minor reduction in average high-temperature, sliding from a tropical 91.6°F (33.1°C) in August to a moderately hot 84.6°F (29.2°C). During September, Belleville's temperature records a considerable difference from its daily highs to an average low of 62.2°F (16.8°C).Heat index
The heat index in September is calculated to be a hot 93.2°F (34°C). Extra precautions are necessary, heat cramps and heat exhaustion are plausible outcomes. Extended activity could lead to heatstroke.It is important to note that the heat index values are for shaded areas and light wind scenarios. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', combines both the air temperature and the humidity level to give a perceived human temperature. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important 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.
Humidity
The average relative humidity in September is 74%.Rainfall
In Belleville, in September, during 12.8 rainfall days, 2.87" (73mm) of precipitation is typically accumulated. In Belleville, during the entire year, the rain falls for 149.2 days and collects up to 36.65" (931mm) of precipitation.Snowfall
April through October are months without snowfall.Daylight
In September, the average length of the day is 12h and 23min.On the first day of September, sunrise is at 6:46 am and sunset at 7:40 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 6:58 pm CDT.
Sunshine
In Belleville, the average sunshine in September is 9.2h.UV index
The average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A maximum daily UV index of 6 during September morphs into the following directions:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. 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
Belleville, AR
- Average high temperature in September: 84.6°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 (48.4°F).
- Average low temperature in September: 62.2°F
The month with the highest average low temperature is July (70°F).
The coldest month (with the lowest average low temperature) is January (31.5°F).
Average pressure in September
Belleville, 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 (29.94"Hg).
Average wind speed in September
Belleville, AR
- Average wind speed in September: 4.3mph
The windiest month (with the highest average wind speed) is April (6.6mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).
Average humidity in September
Belleville, AR
- Average humidity in September: 74%
The month with the highest relative humidity is March (79%).
The month with the lowest relative humidity is July (71%).
Average rainfall in September
Belleville, AR
- Average rainfall in September: 2.87"
The wettest month (with the highest rainfall) is May (4.96").
The driest month (with the least rainfall) is January (2.09").
Average rainfall days in September
Belleville, AR
- Average rainfall days in September: 12.8 days
The month with the highest number of rainy days is July (15.3 days).
The month with the least rainy days is January (9.3 days).
Average snowfall in September
Belleville, AR
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.71").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Belleville, AR
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.8 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
Belleville, AR
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in September: 9h and 12min
The months with the most sunshine are June and July (Average sunshine: 10h and 36min).
The months with the least sunshine are January, February and December (Average sunshine: 5h and 24min).
Average sunshine days in September
Belleville, AR
- Average sunshine days in September: 15.4 days
The month with the most sunshine days is January (19.9 days).
The month with the least sunshine days is May (13.2 days).
Average UV index in September
Belleville, 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
Belleville, AR
- Average cloud cover in September: 30
The month with the most cloud cover is February (Cloud cover 46).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in September
Belleville, AR
- Average visibility in September: 6mi
The months with the highest visibility are June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March, April, May and December (5mi).
