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 signifies a minor shift to an average high-temperature of a moderately hot 84.9°F (29.4°C), aligning closely with August. During the nights in September, Jacksonville observes an average low-temperature of 64.9°F (18.3°C).Heat index
September's mean heat index is estimated at a tropical 93.2°F (34°C). Implement more preventive measures, heat cramps and heat exhaustion are probable. Heatstroke might result from extended activity.One should consider that heat index numbers are for shaded settings and light wind. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'real feel' or 'feels like', is a composite of temperature and humidity figures to convey how warm it feels. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.
Humidity
The average relative humidity in September in Jacksonville is 71%.Rainfall
The month with the least rainfall is September, when the rain falls for 12.6 days and typically collects 2.05" (52mm) of precipitation.Snowfall
In Jacksonville, Arkansas, snow does not fall in April through October.Daylight
In September, the average length of the day in Jacksonville, Arkansas, is 12h and 23min.On the first day of September in Jacksonville, sunrise is at 6:41 am and sunset at 7:34 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 6:53 pm CDT.
Sunshine
The average sunshine in September is 9.7h.UV index
The average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the average person.Note: A daily high UV index of 6 in September leads to these guidelines:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Frequently asked questions
Is it hot in Jacksonville during September?
What is the average humidity in September in Jacksonville?
What is the driest month in Jacksonville?
How much does it rain in Jacksonville in September?
When it does not snow in Jacksonville?
What is the average length of the day in September in Jacksonville?
When are sunrise and sunset in September in Jacksonville?
How many hours of sunshine does Jacksonville have in September?
What is the UV index reading in September in Jacksonville?
Average temperature in September
Jacksonville, AR
- Average high temperature in September: 84.9°F
The warmest month (with the highest average high temperature) is July (91.2°F).
The month with the lowest average high temperature is January (47.8°F).
- Average low temperature in September: 64.9°F
The month with the highest average low temperature is July (72.1°F).
The coldest month (with the lowest average low temperature) is January (33.8°F).
Average pressure in September
Jacksonville, 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
Jacksonville, AR
- Average wind speed in September: 5.4mph
The windiest months (with the highest average wind speed) are February, March and April (8.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).
Average humidity in September
Jacksonville, AR
- Average humidity in September: 71%
The month with the highest relative humidity is March (78%).
The month with the lowest relative humidity is October (69%).
Average rainfall in September
Jacksonville, AR
- Average rainfall in September: 2.05"
The wettest month (with the highest rainfall) is April (4.57").
The driest month (with the least rainfall) is September (2.05").
Average rainfall days in September
Jacksonville, AR
- Average rainfall days in September: 12.6 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is November (9.5 days).
Average snowfall in September
Jacksonville, AR
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.06").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Jacksonville, AR
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.3 days).
The months with the least snowfall days are April, May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Jacksonville, 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 54min).
- Average sunshine in September: 9h and 4min
The month with the most sunshine is June (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 6min).
Average sunshine days in September
Jacksonville, AR
- Average sunshine days in September: 15.4 days
The month with the most sunshine days is October (19.6 days).
The month with the least sunshine days is July (12.4 days).
Average UV index in September
Jacksonville, AR
- Average UV index in September: 6
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in September
Jacksonville, AR
- Average cloud cover in September: 27
The month with the most cloud cover is February (Cloud cover 46).
The month with the least cloud cover is June (Cloud cover 25).
Average visibility in September
Jacksonville, 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).
Jacksonville, Arkansas, USA
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