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 beginning of September subtly marks a decrease in the average high-temperature, transitioning from a hot 88°F (31.1°C) in August to a moderately hot 80.6°F (27°C). Green Forest experiences a mean temperature of 59.7°F (15.4°C) during September nights.Heat index
The heat index for September is appraised at 84.2°F (29°C). Fatigue might occur with continuous exposure and activity, potentially causing heat cramps.In reference to the heat index, it's for places in shade and with a slight 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', takes into account both air temperature and humidity to illustrate what people actually feel. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are extremely significant for babies and toddlers. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.
Humidity
In Green Forest, the average relative humidity in September is 74%.Rainfall
In Green Forest, Arkansas, during September, the rain falls for 13.8 days and regularly aggregates up to 2.13" (54mm) of precipitation. In Green Forest, during the entire year, the rain falls for 162 days and collects up to 34.29" (871mm) of precipitation.Snowfall
June through October are months without snowfall.Daylight
The average length of the day in September in Green Forest, Arkansas, is 12h and 24min.On the first day of the month, sunrise is at 6:45 am and sunset at 7:41 pm. On the last day of September, sunrise is at 7:08 am and sunset at 6:58 pm CDT.
Sunshine
In Green Forest, the average sunshine in September is 9.3h.UV index
In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum UV index, 5 during September, leads to the following recommendations:
Exercise prevention - Warding off sunburn is urged. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Green Forest?
What is the average humidity in September in Green Forest?
How many days does it rain in September in Green Forest?
When it does not snow in Green Forest?
How many hours of daylight does Green Forest have in September?
What time are sunrise and sunset in September in Green Forest?
How many hours of sunshine does Green Forest have in September?
What is the UV index reading in September in Green Forest?
Average temperature in September
Green Forest, AR
- Average high temperature in September: 80.6°F
The warmest month (with the highest average high temperature) is July (89.2°F).
The month with the lowest average high temperature is January (44.2°F).
- Average low temperature in September: 59.7°F
The month with the highest average low temperature is July (67.8°F).
The coldest month (with the lowest average low temperature) is January (28.4°F).
Average pressure in September
Green Forest, AR
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The months with the lowest atmospheric pressure are April and June (29.94"Hg).
Average wind speed in September
Green Forest, AR
- Average wind speed in September: 5.3mph
The windiest month (with the highest average wind speed) is April (8.2mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in September
Green Forest, AR
- Average humidity in September: 74%
The months with the highest relative humidity are March and May (77%).
The months with the lowest relative humidity are January, July and October (73%).
Average rainfall in September
Green Forest, AR
- Average rainfall in September: 2.13"
The wettest month (with the highest rainfall) is May (4.45").
The driest month (with the least rainfall) is February (1.97").
Average rainfall days in September
Green Forest, AR
- Average rainfall days in September: 13.8 days
The month with the highest number of rainy days is May (17.9 days).
The month with the least rainy days is January (9.2 days).
Average snowfall in September
Green Forest, AR
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.52").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in September
Green Forest, AR
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (5.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Green Forest, AR
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 9h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 5h and 24min).
Average sunshine days in September
Green Forest, AR
- Average sunshine days in September: 13 days
The month with the most sunshine days is December (18.4 days).
The month with the least sunshine days is July (9.8 days).
Average UV index in September
Green Forest, AR
- Average UV index in September: 5
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in September
Green Forest, AR
- Average cloud cover in September: 30
The month with the most cloud cover is March (Cloud cover 46).
The months with the least cloud cover are June, July and August (Cloud cover 28).
Average visibility in September
Green Forest, AR
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
Green Forest, Arkansas, USA
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