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 start of September signals a gentle decrease in the average high-temperature, transitioning from a hot 89.8°F (32.1°C) in August to a moderately hot 82.4°F (28°C). Despite a significant deviation from daily highs, September sees an average nighttime temperature of 60.1°F (15.6°C).Heat index
The heat index in September is appraised at a hot 87.8°F (31°C). Continuous activity in exposure could lead to a feeling of fatigue and heat cramps.Data suggests that the heat index is set for environments in shade and with a light wind. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is the outcome of merging air's temperature and its humidity metrics. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. One's exposure to direct sunlight has the potential to intensify the heat sensation, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.
Humidity
In September, the average relative humidity is 74%.Rainfall
September is the month with the least rainfall in Summit, Arkansas. Rain falls for 11.4 days and accumulates 1.81" (46mm) of precipitation.Snowfall
In Summit, Arkansas, snow does not fall in May through October.Daylight
The average length of the day in September in Summit, Arkansas, is 12h and 24min.On the first day of the month, sunrise is at 6:42 am and sunset at 7:38 pm. On the last day of September, in Summit, sunrise is at 7:05 am and sunset at 6:55 pm CDT.
Sunshine
In Summit, the average sunshine in September is 9.3h.UV index
The average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for average individuals.Note: In September, the maximum UV index of 5 suggests this advice:
Be vigilant - A duty to shield skin and eyes from injury exists. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Enhance your sun protection with tightly woven, yet airy clothing.
Frequently asked questions
How hot is it in Summit in September?
What is the average humidity in September in Summit?
What is the driest month in Summit?
How many days does it rain in September in Summit?
When it does not snow in Summit?
What is the average length of the day in September in Summit?
When is the sunrise / sunset in September in Summit?
How many hours of sunshine does Summit have in September?
What is the UV index intensity in September in Summit?
Average temperature in September
Summit, AR
- Average high temperature in September: 82.4°F
The warmest month (with the highest average high temperature) is July (90.9°F).
The month with the lowest average high temperature is January (44.2°F).
- Average low temperature in September: 60.1°F
The month with the highest average low temperature is July (68.4°F).
The coldest month (with the lowest average low temperature) is January (28.2°F).
Average pressure in September
Summit, 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 (29.93"Hg).
Average wind speed in September
Summit, AR
- Average wind speed in September: 4.7mph
The windiest months (with the highest average wind speed) are February and April (7mph).
The calmest month (with the lowest average wind speed) is August (4.4mph).
Average humidity in September
Summit, AR
- Average humidity in September: 74%
The month with the highest relative humidity is March (79%).
The months with the lowest relative humidity are July, August and October (73%).
Average rainfall in September
Summit, AR
- Average rainfall in September: 1.81"
The wettest month (with the highest rainfall) is May (4.49").
The driest month (with the least rainfall) is September (1.81").
Average rainfall days in September
Summit, AR
- Average rainfall days in September: 11.4 days
The month with the highest number of rainy days is May (15.3 days).
The months with the least rainy days are January and December (8 days).
Average snowfall in September
Summit, AR
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.73").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Summit, AR
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Summit, AR
- Average daylight in September: 12h and 2min
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 42min).
- Average sunshine in September: 9h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 42min).
The months with the least sunshine are January and February (Average sunshine: 5h and 12min).
Average sunshine days in September
Summit, AR
- Average sunshine days in September: 16.7 days
The month with the most sunshine days is December (21.4 days).
The months with the least sunshine days are May and August (13.6 days).
Average UV index in September
Summit, 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
Summit, AR
- Average cloud cover in September: 31
The month with the most cloud cover is March (Cloud cover 47).
The months with the least cloud cover are June, July and August (Cloud cover 29).
Average visibility in September
Summit, AR
- Average visibility in September: 5mi
The months with the highest visibility are January, February, June, October, November and December (6mi).
The months with the lowest visibility are March, April, May, July, August and September (5mi).
Summit, Arkansas, USA
Weather forecast for your location
2. Allow the app to use your location
