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 advent of September sees the average high-temperature at a warm 85.6°F (29.8°C), subtly shifted from August's 89.8°F (32.1°C). An average low-temperature of 66.4°F (19.1°C) is observed during the September nights.Heat index
Throughout September, the heat index is estimated at a torrid 95°F (35°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.When referencing the heat index, its values are suitable for shady environments and light breezes. If exposed to direct sunlight, the heat index could climb by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', ties air temperature with relative humidity to produce the perceived temperature sensation. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
In high temperatures, perspiration kicks in, allowing the human body to cool down through the evaporation of sweat. When relative humidity is at high levels, the evaporation rate lessens, causing the body to keep more heat than it would in less humid conditions. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.
Humidity
The average relative humidity in September in Grady is 71%.Rainfall
September is the month with the least rainfall in Grady. Rain falls for 11.3 days and accumulates 1.89" (48mm) of precipitation.Snowfall
April through November are months without snowfall.Daylight
In September, the average length of the day in Grady is 12h and 22min.On the first day of September in Grady, sunrise is at 6:40 am and sunset at 7:32 pm. On the last day of the month, sunrise is at 7:01 am and sunset at 6:51 pm CDT.
Sunshine
In September, the average sunshine in Grady is 9.8h.UV index
The average daily maximum UV index in September in Grady is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the ordinary person.Note: The average daily UV index of 5 in September transforms into the following instructions:
Act with care - Obligation to protect against skin and eye damage is highlighted. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Frequently asked questions
How hot is it in Grady in September?
What is the average humidity in September in Grady?
What is the driest month in Grady?
How much does it rain in Grady in September?
When it does not snow in Grady?
What is the average length of the day in September in Grady?
When is the sunrise / sunset in September in Grady?
How many hours of sunshine does Grady have in September?
What is the UV index intensity in September in Grady?
Average temperature in September
Grady, AR
- Average high temperature in September: 85.6°F
The warmest month (with the highest average high temperature) is July (90.5°F).
The month with the lowest average high temperature is January (50°F).
- Average low temperature in September: 66.4°F
The month with the highest average low temperature is July (73.2°F).
The coldest month (with the lowest average low temperature) is January (36.9°F).
Average pressure in September
Grady, 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 (29.94"Hg).
Average wind speed in September
Grady, AR
- Average wind speed in September: 5.8mph
The windiest month (with the highest average wind speed) is February (9.4mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).
Average humidity in September
Grady, AR
- Average humidity in September: 71%
The month with the highest relative humidity is March (79%).
The month with the lowest relative humidity is October (68%).
Average rainfall in September
Grady, AR
- Average rainfall in September: 1.89"
The wettest month (with the highest rainfall) is April (4.21").
The driest month (with the least rainfall) is September (1.89").
Average rainfall days in September
Grady, AR
- Average rainfall days in September: 11.3 days
The month with the highest number of rainy days is July (16.8 days).
The month with the least rainy days is November (9 days).
Average snowfall in September
Grady, AR
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.55").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Grady, AR
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.1 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
Grady, AR
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in September: 9h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in September
Grady, AR
- Average sunshine days in September: 16.7 days
The month with the most sunshine days is October (21 days).
The month with the least sunshine days is July (13.4 days).
Average UV index in September
Grady, AR
- Average UV index in September: 5
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February and December (UV index 3).
Average cloud cover in September
Grady, AR
- Average cloud cover in September: 28
The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is June (Cloud cover 26).
Average visibility in September
Grady, 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).
Grady, Arkansas, USA
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