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 shift from August to September coincides with a small decrease in the average high-temperature, down to a warm 82°F (27.8°C) from a hot 89.2°F (31.8°C). Shirley's nighttime temperature during September is consistently averaged at a refreshing 61.9°F (16.6°C).Heat index
The heat index for September is computed to be a hot 87.8°F (31°C). Ongoing exposure and activity could lead to a state of exhaustion, with a chance of heat cramps.In terms of the heat index, values are set with light wind and shade conditions in mind. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. With direct sunlight, be aware that it might enhance the heat sensation, raising the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.
Humidity
The average relative humidity in September is 75%.Rainfall
The month with the least rainfall is September, when the rain falls for 12.4 days and typically collects 2.09" (53mm) of precipitation.Snowfall
May through October are months without snowfall in Shirley.Daylight
In Shirley, the average length of the day in September is 12h and 23min.On the first day of September in Shirley, sunrise is at 6:41 am and sunset at 7:36 pm. On the last day of the month, sunrise is at 7:04 am and sunset at 6:53 pm CDT.
Sunshine
In September, the average sunshine in Shirley, Arkansas, is 9.3h.UV index
In Shirley, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: A maximum daily UV index of 5 during September morphs into the following directions:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Frequently asked questions
What is the usual temperature for Shirley in September?
What is the average humidity in September in Shirley?
What is the driest month in Shirley?
How many days does it rain in September in Shirley?
When it does not snow in Shirley?
How many hours of daylight does Shirley have in September?
When is the sunrise / sunset in September in Shirley?
How many hours of sunshine does Shirley have in September?
What is the UV index intensity in September in Shirley?
Average temperature in September
Shirley, AR
- Average high temperature in September: 82°F
The warmest month (with the highest average high temperature) is July (90°F).
The month with the lowest average high temperature is January (45.3°F).
- Average low temperature in September: 61.9°F
The month with the highest average low temperature is July (69.3°F).
The coldest month (with the lowest average low temperature) is January (30.4°F).
Average pressure in September
Shirley, 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
Shirley, 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 (4.7mph).
Average humidity in September
Shirley, AR
- Average humidity in September: 75%
The months with the highest relative humidity are March and May (79%).
The month with the lowest relative humidity is October (73%).
Average rainfall in September
Shirley, AR
- Average rainfall in September: 2.09"
The wettest month (with the highest rainfall) is April (4.09").
The driest month (with the least rainfall) is September (2.09").
Average rainfall days in September
Shirley, AR
- Average rainfall days in September: 12.4 days
The months with the highest number of rainy days are May and July (15.8 days).
The month with the least rainy days is January (9.3 days).
Average snowfall in September
Shirley, AR
- Average snowfall in September: 0"
The month with the highest snowfall is March (1.34").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Shirley, AR
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (2 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
Shirley, 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 2min
The months with the most sunshine are June and July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 5h and 12min).
Average sunshine days in September
Shirley, AR
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is December (20 days).
The month with the least sunshine days is July (13.2 days).
Average UV index in September
Shirley, AR
- Average UV index in September: 5
The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in September
Shirley, AR
- Average cloud cover in September: 29
The months with the most cloud cover are February and March (Cloud cover 45).
The months with the least cloud cover are June and July (Cloud cover 27).
Average visibility in September
Shirley, 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).
Shirley, Arkansas, USA
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