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
September is marked by a subtle drop in average high-temperatures, transitioning from a tropical 91.6°F (33.1°C) in August to a warm 84.9°F (29.4°C). In the face of high daytime temperatures, Apex witnesses a consistent average nighttime low of 62.4°F (16.9°C) during September.Heat index
The heat index for September is appraised at a hot 93.2°F (34°C). Incorporate extra safety measures to avoid heat exhaustion and heat cramps. Continuous activity could provoke heatstroke.Note that heat index values are valued for light wind and location in the shade. 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 'feels like', reflects the blend of air temperature and relative humidity to give a temperature impression. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.
Humidity
In September, the average relative humidity in Apex is 72%.Rainfall
In Apex, Arkansas, during September, the rain falls for 11.9 days and regularly aggregates up to 2.44" (62mm) of precipitation. In Apex, during the entire year, the rain falls for 148.1 days and collects up to 34.92" (887mm) of precipitation.Snowfall
April through October are months without snowfall.Daylight
In Apex, the average length of the day in September is 12h and 23min.On the first day of the month, sunrise is at 6:51 am and sunset at 7:43 pm. On the last day of September, sunrise is at 7:12 am and sunset at 7:02 pm CDT.
Sunshine
The average sunshine in September in Apex, Arkansas, is 9.5h.UV index
In Apex, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the average person.Note: In September, the maximum UV index of 5 transforms into these recommendations:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in Apex in September?
What is the average humidity in September in Apex?
How many days does it rain in September in Apex?
When it does not snow in Apex?
How many hours of daylight does Apex have in September?
When are sunrise and sunset in September in Apex?
How long on average sun shines in September in Apex?
How high is the UV index in September in Apex?
Average temperature in September
Apex, AR
- Average high temperature in September: 84.9°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 (48.7°F).
- Average low temperature in September: 62.4°F
The month with the highest average low temperature is July (70.3°F).
The coldest month (with the lowest average low temperature) is January (32.2°F).
Average pressure in September
Apex, AR
- Average pressure in September: 30"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
Apex, AR
- Average wind speed in September: 5mph
The windiest month (with the highest average wind speed) is April (7.8mph).
The calmest month (with the lowest average wind speed) is August (4.6mph).
Average humidity in September
Apex, AR
- Average humidity in September: 72%
The month with the highest relative humidity is February (78%).
The month with the lowest relative humidity is August (70%).
Average rainfall in September
Apex, AR
- Average rainfall in September: 2.44"
The wettest month (with the highest rainfall) is May (4.53").
The driest month (with the least rainfall) is January (1.97").
Average rainfall days in September
Apex, AR
- Average rainfall days in September: 11.9 days
The month with the highest number of rainy days is August (15.5 days).
The month with the least rainy days is January (8.9 days).
Average snowfall in September
Apex, AR
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.14").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Apex, AR
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Apex, AR
- Average daylight in September: 12h and 2min
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 3min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The months with the least sunshine are January and December (Average sunshine: 5h and 18min).
Average sunshine days in September
Apex, AR
- Average sunshine days in September: 15.8 days
The month with the most sunshine days is January (19.3 days).
The month with the least sunshine days is August (12.7 days).
Average UV index in September
Apex, 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
Apex, AR
- Average cloud cover in September: 27
The month with the most cloud cover is February (Cloud cover 46).
The months with the least cloud cover are June and August (Cloud cover 26).
Average visibility in September
Apex, AR
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
Apex, Arkansas, USA
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