September weather forecastGreenland, AR
September
Weather in September
The first month of the autumn, September, is still a warm month in Greenland, Arkansas, with an average temperature fluctuating between 61.2°F (16.2°C) and 81°F (27.2°C).Temperature
The commencement of September indicates a gentle shift in the average high-temperature, receding from August's hot 87.8°F (31°C) to a warm 81°F (27.2°C). An average low-temperature of 61.2°F (16.2°C) is recorded in the month of September in Greenland.Heat index
The heat index for September is computed to be a tropical 86°F (30°C). Constant activity during exposure could result in a state of weariness and possibly heat cramps.Heat index guidelines indicate values are for light wind scenarios and shaded regions. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'felt air temperature' or 'real feel', quantifies the warmth felt when relative humidity is considered. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. The sun, when shining directly, can have a significant impact on the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Young ones generally face higher dangers than adults since they sweat less. Along with their large skin surface area compared totheir small bodies and increased heat production from their activities, the risks are heightened.
Humidity
The average relative humidity in September in Greenland is 74%.Rainfall
In Greenland, during September, the rain falls for 12.3 days and regularly aggregates up to 2.36" (60mm) of precipitation. Throughout the year, there are 148.4 rainfall days, and 32.24" (819mm) of precipitation is accumulated.Snowfall
In Greenland, Arkansas, snow does not fall in June through October.Daylight
The average length of the day in September is 12h and 23min.On the first day of the month, sunrise is at 6:49 am and sunset at 7:43 pm. On the last day of September, in Greenland, Arkansas, sunrise is at 7:11 am and sunset at 7:01 pm CDT.
Sunshine
The average sunshine in September in Greenland is 9.4h.UV index
The average daily maximum UV index in September in Greenland is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the average person.Note: In September, the UV index of 5 transforms into the following advice:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Greenland, AR
- Average high temperature in September: 81°F
The warmest month (with the highest average high temperature) is July (89.1°F).
The month with the lowest average high temperature is January (44.2°F).
- Average low temperature in September: 61.2°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (28.6°F).
Average pressure in September
Greenland, AR
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Greenland, AR
- Average wind speed in September: 6.5mph
The windiest month (with the highest average wind speed) is April (9.7mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity in September
Greenland, AR
- Average humidity in September: 74%
The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is October (72%).
Average rainfall in September
Greenland, AR
- Average rainfall in September: 2.36"
The wettest month (with the highest rainfall) is May (3.5").
The driest month (with the least rainfall) is February (1.85").
Average rainfall days in September
Greenland, AR
- Average rainfall days in September: 12.3 days
The month with the highest number of rainy days is May (16.2 days).
The month with the least rainy days is November (8 days).
Average snowfall in September
Greenland, AR
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.2").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in September
Greenland, AR
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Greenland, AR
- Average daylight in September: 12h and 24min
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 48min).
- Average sunshine in September: 9h and 24min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 5h and 18min).
Average sunshine days in September
Greenland, AR
- Average sunshine days in September: 17.1 days
The month with the most sunshine days is December (19.4 days).
The month with the least sunshine days is May (12.7 days).
Average UV index in September
Greenland, 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 and December (UV index 2).
Average cloud cover in September
Greenland, AR
- Average cloud cover in September: 28
The months with the most cloud cover are February and March (Cloud cover 46).
The month with the least cloud cover is August (Cloud cover 26).
Average visibility in September
Greenland, 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).
