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
As Holly Grove welcomes September, the average high-temperature stabilizes at a moderately hot 83.8°F (28.8°C), showing little deviation from August's 88.3°F (31.3°C). The temperature dips to an average of 65.7°F (18.7°C) during September nights.Heat index
For September, the heat index is estimated at a hot 91.4°F (33°C). Take more preventive steps, risk of heat exhaustion and heat cramps is elevated. Long activity may culminate in heatstroke.When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is an aggregate value of air's warmth and moisture to show the human-felt temperature. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. One's exposure to direct sunlight has the potential to intensify the heat sensation, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. 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.
Humidity
In Holly Grove, the average relative humidity in September is 73%.Rainfall
The month with the least rainfall is September, when the rain falls for 12.7 days and typically collects 2.05" (52mm) of precipitation.Snowfall
In Holly Grove, snow does not fall in April through September.Daylight
In September, the average length of the day is 12h and 23min.On the first day of September in Holly Grove, Arkansas, sunrise is at 6:38 am and sunset at 7:30 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 6:49 pm CDT.
Sunshine
The average sunshine in September is 9.9h.UV index
The average daily maximum UV index in September in Holly Grove is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: A daily maximum UV index of 5 in September translates into the following instructions:
Preventative actions are necessary - Recommendations to ward off sunburn are given. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot during September?
What is the average humidity in September?
What is the driest month?
How much does it rain in September?
When it does not snow?
Does it snow in September?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How long on average sun shines in September in Holly Grove?
How high is the UV index in September?
Average temperature in September
Holly Grove, AR
- Average high temperature in September: 83.8°F
The warmest month (with the highest average high temperature) is July (89.8°F).
The month with the lowest average high temperature is January (48.2°F).
- Average low temperature in September: 65.7°F
The month with the highest average low temperature is July (73°F).
The coldest month (with the lowest average low temperature) is January (34.9°F).
Average pressure in September
Holly Grove, AR
- Average pressure in September: 30"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
Holly Grove, AR
- Average wind speed in September: 5.8mph
The windiest month (with the highest average wind speed) is February (9.4mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).
Average humidity in September
Holly Grove, AR
- Average humidity in September: 73%
The month with the highest relative humidity is March (78%).
The month with the lowest relative humidity is October (67%).
Average rainfall in September
Holly Grove, AR
- Average rainfall in September: 2.05"
The wettest month (with the highest rainfall) is April (4.69").
The driest month (with the least rainfall) is September (2.05").
Average rainfall days in September
Holly Grove, AR
- Average rainfall days in September: 12.7 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is October (9.6 days).
Average snowfall in September
Holly Grove, AR
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.79").
The months with the least snowfall are April, May, June, July, August and September (0").
Average snowfall days in September
Holly Grove, AR
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.8 days).
The months with the least snowfall days are April, May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Holly Grove, 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: 9h and 54min).
- Average sunshine in September: 9h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).
Average sunshine days in September
Holly Grove, AR
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is October (20.5 days).
The month with the least sunshine days is July (10.5 days).
Average UV index in September
Holly Grove, AR
- Average UV index in September: 5
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in September
Holly Grove, AR
- Average cloud cover in September: 27
The month with the most cloud cover is February (Cloud cover 45).
The month with the least cloud cover is June (Cloud cover 24).
Average visibility in September
Holly Grove, 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).
Holly Grove, Arkansas, USA
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