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
As September arrives, Urbana's weather displays a minor decrease in high-temperatures, transitioning from August's 93.4°F (34.1°C) to a still hot 87.3°F (30.7°C). Urbana experiences a consistent average temperature of 65.8°F (18.8°C) throughout the nights in September.Heat index
The heat index in September is appraised at a fiery hot 98.6°F (37°C). Ensure heightened precautions, risk of heat cramps and heat exhaustion is significant. Sustained activity could provoke heatstroke.When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is the result of factoring in humidity to the air temperature, indicating perceived warmth. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important 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.
One way the human body deals with excessive warmth is by perspiring and allowing sweat to evaporate. In the presence of high relative humidity, the evaporation rate diminishes, resulting in the body retaining more warmth compared to dry conditions. Elevated heat gain compared to the body's release capability poses risks of dehydration and potential overheating.
Humidity
The months with the lowest humidity in Urbana, Arkansas, are July through October, with an average relative humidity of 71%.Rainfall
In Urbana, in September, during 12.5 rainfall days, 2.36" (60mm) of precipitation is typically accumulated. Throughout the year, there are 146.4 rainfall days, and 32.87" (835mm) of precipitation is accumulated.Snowfall
April through November are months without snowfall in Urbana.Daylight
The average length of the day in September in Urbana is 12h and 22min.On the first day of the month, sunrise is at 6:44 am and sunset at 7:34 pm. On the last day of September, sunrise is at 7:03 am and sunset at 6:55 pm CDT.
Sunshine
The average sunshine in September in Urbana, Arkansas, is 9.5h.UV index
In September, the average daily maximum UV index in Urbana is 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for the average person.Note: In September, the UV index of 6 transforms into the following advice:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Frequently asked questions
How hot is September in Urbana?
What is the least humid month in Urbana?
What is the average humidity in September in Urbana?
How many days does it rain in September in Urbana?
When it does not snow in Urbana?
What is the average length of the day in September in Urbana?
When is the sunrise / sunset in September in Urbana?
How long on average sun shines in September in Urbana?
What is the UV index intensity in September in Urbana?
Average temperature in September
Urbana, AR
- Average high temperature in September: 87.3°F
The warmest month (with the highest average high temperature) is July (93.7°F).
The month with the lowest average high temperature is January (52°F).
- Average low temperature in September: 65.8°F
The month with the highest average low temperature is July (72.9°F).
The coldest month (with the lowest average low temperature) is January (36.9°F).
Average pressure in September
Urbana, AR
- Average pressure in September: 29.99"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
Urbana, AR
- Average wind speed in September: 4.9mph
The windiest month (with the highest average wind speed) is April (7.1mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in September
Urbana, AR
- Average humidity in September: 71%
The months with the highest relative humidity are February and December (81%).
The months with the lowest relative humidity are July, August, September and October (71%).
Average rainfall in September
Urbana, AR
- Average rainfall in September: 2.36"
The wettest month (with the highest rainfall) is April (4.13").
The driest month (with the least rainfall) is November (2.05").
Average rainfall days in September
Urbana, AR
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is August (15.4 days).
The month with the least rainy days is October (9 days).
Average snowfall in September
Urbana, AR
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.59").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Urbana, AR
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (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
Urbana, AR
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in September: 9h and 3min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in September
Urbana, AR
- Average sunshine days in September: 15.4 days
The month with the most sunshine days is October (20.5 days).
The month with the least sunshine days is August (13.6 days).
Average UV index in September
Urbana, AR
- Average UV index in September: 6
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in September
Urbana, AR
- Average cloud cover in September: 30
The month with the most cloud cover is February (Cloud cover 50).
The months with the least cloud cover are June, July and August (Cloud cover 28).
Average visibility in September
Urbana, AR
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).
Urbana, Arkansas, USA
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