September weather forecastPrairie Grove, AR
September
Weather in September
The first month of the autumn, September, is still a warm month in Prairie Grove, Arkansas, with an average temperature fluctuating between 61.3°F (16.3°C) and 81.3°F (27.4°C).Temperature
A moderate decline in average high-temperatures is noted in September, moving from a hot 88.2°F (31.2°C) in August to a warm 81.3°F (27.4°C). Prairie Grove reports an average nighttime low-temperature of 61.3°F (16.3°C) in September.Heat index
September's mean heat index is computed to be a tropical 86°F (30°C). Exhaustion becomes probable with enduring exposure and activity, potentially causing heat cramps.The metrics for the heat index are tailored for both shady environments and light winds. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Kids frequently fail to realize the necessity for resting and hydrating. Thirst is an advanced indication of dehydration - hence, maintaining hydration, especially during extended physical activities, becomes essential.
Humidity
In Prairie Grove, Arkansas, the average relative humidity in September is 73%.Rainfall
In September, in Prairie Grove, Arkansas, the rain falls for 12.9 days. Throughout September, 2.6" (66mm) of precipitation is accumulated. In Prairie Grove, Arkansas, during the entire year, the rain falls for 158.7 days and collects up to 34.72" (882mm) of precipitation.Snowfall
In Prairie Grove, snow does not fall in June through October.Daylight
The average length of the day in September in Prairie Grove is 12h and 23min.On the first day of September, sunrise is at 6:49 am and sunset at 7:44 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 7:01 pm CDT.
Sunshine
The average sunshine in September in Prairie Grove is 9.4h.UV index
The average daily maximum UV index in September in Prairie Grove is 5. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: The average daily UV index of 5 in September transforms into the following instructions:
Undertake protective steps - Recommendations to avoid sunburn are issued. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Prairie Grove, AR
- Average high temperature in September: 81.3°F
The warmest month (with the highest average high temperature) is July (89.6°F).
The month with the lowest average high temperature is January (44.4°F).
- Average low temperature in September: 61.3°F
The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is January (28.8°F).
Average pressure in September
Prairie Grove, 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
Prairie Grove, AR
- Average wind speed in September: 6.7mph
The windiest month (with the highest average wind speed) is April (9.9mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).
Average humidity in September
Prairie Grove, AR
- Average humidity in September: 73%
The month with the highest relative humidity is May (78%).
The months with the lowest relative humidity are August and October (72%).
Average rainfall in September
Prairie Grove, AR
- Average rainfall in September: 2.6"
The wettest month (with the highest rainfall) is August (3.82").
The driest month (with the least rainfall) is February (1.93").
Average rainfall days in September
Prairie Grove, AR
- Average rainfall days in September: 12.9 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is November (8.7 days).
Average snowfall in September
Prairie Grove, AR
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.09").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in September
Prairie Grove, AR
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is February (3.7 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Prairie Grove, 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 24min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 5h and 24min).
Average sunshine days in September
Prairie Grove, AR
- Average sunshine days in September: 15.3 days
The month with the most sunshine days is December (18.6 days).
The month with the least sunshine days is July (10.4 days).
Average UV index in September
Prairie Grove, 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
Prairie Grove, AR
- Average cloud cover in September: 28
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is August (Cloud cover 25).
Average visibility in September
Prairie Grove, 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).
