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
With the commencement of September, Coler records a moderate temperature decline, with the average high easing from August's 93°F (33.9°C) to a still hot 86.9°F (30.5°C). Throughout September, the temperature falls to an average low of 65.7°F (18.7°C).Heat index
The heat index value during September is evaluated at a sweltering 96.8°F (36°C). Exercise extra preventive actions, heat cramps and heat exhaustion are plausible. Continuous activity could result in heatstroke.Be advised, the heat index considers values for conditions in shade and with a light breeze. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is achieved by amalgamating air temperature with the relative humidity readings. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.
The body's inherent cooling system operates through perspiration, wherein evaporating sweat offsets excessive heat. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. Exceeding the body's heat disposal threshold results in a rise in body temperature and potential thermal disorders.
Humidity
The months with the lowest humidity are August and September, with an average relative humidity of 70%.Rainfall
In September, the rain falls for 11.3 days. Throughout September, 1.54" (39mm) of precipitation is accumulated. In Coler, during the entire year, the rain falls for 142 days and collects up to 27.17" (690mm) of precipitation.Snowfall
April through December are months without snowfall.Daylight
The average length of the day in September is 12h and 22min.On the first day of the month, sunrise is at 6:48 am and sunset at 7:39 pm. On the last day of September, sunrise is at 7:08 am and sunset at 6:59 pm CDT.
Sunshine
The average sunshine in September is 9.6h.UV index
In Coler, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: An average maximum UV index of 5 in September leads to these recommendations:
Ensure safety - Recommendations to avert sunburn are presented. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is September?
What is the least humid month?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
How many hours of daylight does Coler have in September?
What time are sunrise and sunset in September?
How long on average sun shines in September in Coler?
What is the UV index intensity in September in Coler?
Average temperature in September
Coler, AR
- Average high temperature in September: 86.9°F
The warmest month (with the highest average high temperature) is July (93.4°F).
The month with the lowest average high temperature is January (51.4°F).
- Average low temperature in September: 65.7°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 (35.4°F).
Average pressure in September
Coler, AR
- Average pressure in September: 29.99"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Coler, AR
- Average wind speed in September: 5.1mph
The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in September
Coler, AR
- Average humidity in September: 70%
The months with the highest relative humidity are February, March and December (80%).
The months with the lowest relative humidity are August and September (70%).
Average rainfall in September
Coler, AR
- Average rainfall in September: 1.54"
The wettest month (with the highest rainfall) is April (3.07").
The driest month (with the least rainfall) is November (1.5").
Average rainfall days in September
Coler, AR
- Average rainfall days in September: 11.3 days
The month with the highest number of rainy days is July (14.9 days).
The month with the least rainy days is November (8.8 days).
Average snowfall in September
Coler, 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, November and December (0").
Average snowfall days in September
Coler, AR
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.7 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
Coler, 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 4min
The months with the most sunshine are July and August (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).
Average sunshine days in September
Coler, AR
- Average sunshine days in September: 16.7 days
The months with the most sunshine days are January and October (20 days).
The month with the least sunshine days is July (13.6 days).
Average UV index in September
Coler, AR
- Average UV index in September: 5
The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in September
Coler, AR
- Average cloud cover in September: 28
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in September
Coler, AR
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).
Coler, Arkansas, USA
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