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
Wilmar marks the onset of September with an average high-temperature of a still hot 86.9°F (30.5°C), a subtle shift from August's 91.9°F (33.3°C). The low-temperature averages to a refreshing 66°F (18.9°C) during the nights of September.Heat index
September's heat index is evaluated at a fiery hot 98.6°F (37°C). Ensure additional precautions, heat exhaustion and heat cramps may be expected. Heatstroke could occur from sustained activity.In the scope of the heat index, its values resonate with shade and light wind conditions. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant 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.
Evaporating sweat, thanks to perspiration, acts as a natural air conditioner for the human body. Relative humidity in excess curtails evaporation, therefore reducing heat dissipation from the body, leading to feelings of excess heat. Potential thermal conditions emerge as the body's heat gain outpaces its cooling mechanisms.
Humidity
In September, the average relative humidity is 71%.Rainfall
In September, the rain falls for 11.2 days. Throughout September, 1.46" (37mm) of precipitation is accumulated. Throughout the year, in Wilmar, there are 138.5 rainfall days, and 26.54" (674mm) of precipitation is accumulated.Snowfall
April through November are months without snowfall.Daylight
In September, the average length of the day is 12h and 22min.On the first day of September, sunrise is at 6:42 am and sunset at 7:32 pm. On the last day of the month, sunrise is at 7:01 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 unsafe exposure to UV radiation for ordinary individuals.Note: In September, a daily maximum UV index of 6 leads to the following instructions:
Adhere to precautions and respect sun safety doctrines. Avoiding sunburn is vital. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in September?
What is the average humidity in September in Wilmar?
How many days does it rain in September?
When it does not snow?
How many hours of daylight does Wilmar have in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Wilmar have in September?
What is the UV index intensity in September?
Average temperature in September
Wilmar, AR
- Average high temperature in September: 86.9°F
The warmest month (with the highest average high temperature) is July (92.7°F).
The month with the lowest average high temperature is January (51.4°F).
- Average low temperature in September: 66°F
The month with the highest average low temperature is July (72.5°F).
The coldest month (with the lowest average low temperature) is January (36.1°F).
Average pressure in September
Wilmar, 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
Wilmar, AR
- Average wind speed in September: 5.2mph
The windiest months (with the highest average wind speed) are February, March and April (7.6mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in September
Wilmar, AR
- Average humidity in September: 71%
The months with the highest relative humidity are February, March and December (80%).
The month with the lowest relative humidity is October (70%).
Average rainfall in September
Wilmar, AR
- Average rainfall in September: 1.46"
The wettest month (with the highest rainfall) is April (2.91").
The driest month (with the least rainfall) is November (1.14").
Average rainfall days in September
Wilmar, AR
- Average rainfall days in September: 11.2 days
The month with the highest number of rainy days is July (16 days).
The month with the least rainy days is November (7.5 days).
Average snowfall in September
Wilmar, AR
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.51").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Wilmar, AR
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.5 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
Wilmar, 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: 10h and 0min).
- Average sunshine in September: 9h and 4min
The months with the most sunshine are June and July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).
Average sunshine days in September
Wilmar, AR
- Average sunshine days in September: 16.8 days
The month with the most sunshine days is November (21.4 days).
The months with the least sunshine days are July and August (12.9 days).
Average UV index in September
Wilmar, AR
- Average UV index in September: 6
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in September
Wilmar, AR
- Average cloud cover in September: 28
The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is June (Cloud cover 27).
Average visibility in September
Wilmar, 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).
Wilmar, Arkansas, USA
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