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 arrival of September suggests a slight decrease in the average high-temperature, moving from 93.7°F (34.3°C) in August to a still hot 87.4°F (30.8°C). Throughout the month of September, the nighttime temperature dips to an average of 66.7°F (19.3°C).Heat index
The heat index value during 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.Be aware that heat index ratings are designed for shaded locations and minor breezes. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is the outcome of merging air's temperature and its humidity metrics. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Young ones often disregard the necessity to rest and hydrate. Thirst usually indicates advanced dehydration - hence, it is key to stay hydrated, particularly during ongoing physical activities.
As a reaction to high temperatures, the human body begins to perspire, using the evaporation of sweat to lower its temperature. Heightened relative humidity interferes with the body's usual cooling mechanism by reducing evaporation, subsequently decreasing the body's cooling rate and increasing the sensation of heat. Potential thermal conditions emerge as the body's heat gain outpaces its cooling mechanisms.
Humidity
In Emerson, the average relative humidity in September is 71%.Rainfall
In Emerson, Arkansas, in September, it is raining for 12.7 days, with typically 2.8" (71mm) of accumulated precipitation. Throughout the year, in Emerson, there are 153.1 rainfall days, and 37.48" (952mm) of precipitation is accumulated.Snowfall
April through November are months without snowfall in Emerson.Daylight
In September, the average length of the day in Emerson is 12h and 22min.On the first day of September, sunrise is at 6:47 am and sunset at 7:37 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 6:58 pm CDT.
Sunshine
In Emerson, the average sunshine in September is 9.3h.UV index
The average daily maximum UV index in September in Emerson is 6. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: In September, an average UV index of 6 transforms into the following instructions:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is September in Emerson?
What is the average humidity in September in Emerson?
How many days does it rain in September in Emerson?
When it does not snow in Emerson?
What is the average length of the day in September in Emerson?
When are sunrise and sunset in September in Emerson?
How many hours of sunshine does Emerson have in September?
What is the UV index intensity in September in Emerson?
Average temperature in September
Emerson, AR
- Average high temperature in September: 87.4°F
The warmest month (with the highest average high temperature) is July (94.1°F).
The month with the lowest average high temperature is January (53.2°F).
- Average low temperature in September: 66.7°F
The month with the highest average low temperature is July (73°F).
The coldest month (with the lowest average low temperature) is January (37.6°F).
Average pressure in September
Emerson, AR
- Average pressure in September: 29.98"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
Emerson, AR
- Average wind speed in September: 5mph
The windiest month (with the highest average wind speed) is April (7.2mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in September
Emerson, 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 and August (70%).
Average rainfall in September
Emerson, AR
- Average rainfall in September: 2.8"
The wettest month (with the highest rainfall) is April (4.25").
The driest month (with the least rainfall) is July (2.4").
Average rainfall days in September
Emerson, AR
- Average rainfall days in September: 12.7 days
The month with the highest number of rainy days is July (15 days).
The months with the least rainy days are October and November (10.4 days).
Average snowfall in September
Emerson, AR
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.75").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Emerson, AR
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.2 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
Emerson, 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 2min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in September
Emerson, AR
- Average sunshine days in September: 15.7 days
The month with the most sunshine days is October (19.7 days).
The month with the least sunshine days is February (13.8 days).
Average UV index in September
Emerson, 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 and December (UV index 3).
Average cloud cover in September
Emerson, AR
- Average cloud cover in September: 31
The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in September
Emerson, 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).
Emerson, Arkansas, USA
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