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
Griffithville experiences an average high-temperature of a moderately hot 83.3°F (28.5°C) with the onset of September, subtly varied from August's 88.3°F (31.3°C). September nights in Griffithville are marked by an average temperature drop to a comfortable 63.9°F (17.7°C).Heat index
In September, the heat index is calculated to be a tropical 89.6°F (32°C). If one remains active during constant exposure, it might cause exhaustion and heat cramps.Observations indicate that the heat index values are for shady locations with light wind. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'real feel', shows a temperature sensation when both heat and moisture conditions are combined. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.
Humidity
In Griffithville, the average relative humidity in September is 73%.Rainfall
The month with the least rainfall in Griffithville, Arkansas, is September, when the rain falls for 10 days and typically collects 0.83" (21mm) of precipitation.Snowfall
April through November are months without snowfall in Griffithville.Daylight
In Griffithville, the average length of the day in September is 12h and 23min.On the first day of the month, sunrise is at 6:39 am and sunset at 7:32 pm. On the last day of September, sunrise is at 7:01 am and sunset at 6:51 pm CDT.
Sunshine
In Griffithville, the average sunshine in September is 9.8h.UV index
In Griffithville, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: A maximum daily UV index of 6 during September morphs into the following directions:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot in Griffithville during September?
What is the average humidity in September in Griffithville?
What is the driest month in Griffithville?
How many days does it rain in September in Griffithville?
When it does not snow in Griffithville?
How many hours of daylight does Griffithville have in September?
When is the sunrise / sunset in September in Griffithville?
How long on average sun shines in September in Griffithville?
How high is the UV index in September in Griffithville?
Average temperature in September
Griffithville, AR
- Average high temperature in September: 83.3°F
The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is January (46.9°F).
- Average low temperature in September: 63.9°F
The month with the highest average low temperature is July (71.6°F).
The coldest month (with the lowest average low temperature) is January (32.9°F).
Average pressure in September
Griffithville, 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 (29.94"Hg).
Average wind speed in September
Griffithville, AR
- Average wind speed in September: 5.7mph
The windiest month (with the highest average wind speed) is February (8.9mph).
The calmest months (with the lowest average wind speed) are July and August (5.4mph).
Average humidity in September
Griffithville, AR
- Average humidity in September: 73%
The months with the highest relative humidity are March and May (78%).
The month with the lowest relative humidity is October (69%).
Average rainfall in September
Griffithville, AR
- Average rainfall in September: 0.83"
The wettest month (with the highest rainfall) is July (1.81").
The driest month (with the least rainfall) is September (0.83").
Average rainfall days in September
Griffithville, AR
- Average rainfall days in September: 10 days
The month with the highest number of rainy days is July (14 days).
The months with the least rainy days are January and November (7.3 days).
Average snowfall in September
Griffithville, AR
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.35").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Griffithville, AR
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.3 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
Griffithville, AR
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in September: 9h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 6min).
Average sunshine days in September
Griffithville, AR
- Average sunshine days in September: 17.7 days
The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is July (13.3 days).
Average UV index in September
Griffithville, AR
- Average UV index in September: 6
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
Griffithville, AR
- Average cloud cover in September: 27
The months with the most cloud cover are February and March (Cloud cover 44).
The months with the least cloud cover are June, July and August (Cloud cover 25).
Average visibility in September
Griffithville, 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).
Griffithville, Arkansas, USA
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