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
September's arrival shows an average high-temperature of a moderately hot 83.3°F (28.5°C), hardly different from the previous month. During September, Marion consistently records a temperature low averaging a refreshing 65.7°F (18.7°C).Heat index
The heat index value for September is estimated at a tropical 89.6°F (32°C). Continuous exposure and activity could induce a sense of tiredness and subsequently, heat cramps.Take into consideration that the heat index values are calculated for shade and light wind conditions. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', measures the perceived warmth when incorporating the humidity present in the air. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are particularly important for children. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.
Humidity
The average relative humidity in September is 72%.Rainfall
September is the month with the least rainfall. Rain falls for 8.2 days and accumulates 0.43" (11mm) of precipitation.Snowfall
In Marion, snow does not fall in April through October.Daylight
In Marion, the average length of the day in September is 12h and 23min.On the first day of the month, sunrise is at 6:33 am and sunset at 7:27 pm. On the last day of September, sunrise is at 6:55 am and sunset at 6:45 pm CDT.
Sunshine
The average sunshine in September is 9.8h.UV index
In September, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: An average maximum UV index of 5 in September leads to these recommendations:
Undertake protective steps - Preventing sun damage is advised. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in September?
What is the average humidity in September?
What is the driest month?
How many days does it rain in September?
When it does not snow in Marion?
How many hours of daylight does Marion have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Marion have in September?
What is the UV index intensity in September?
Average temperature in September
Marion, AR
- Average high temperature in September: 83.3°F
The warmest month (with the highest average high temperature) is July (88.7°F).
The month with the lowest average high temperature is January (46.8°F).
- Average low temperature in September: 65.7°F
The month with the highest average low temperature is July (72.1°F).
The coldest month (with the lowest average low temperature) is January (34°F).
Average pressure in September
Marion, 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
Marion, AR
- Average wind speed in September: 5.8mph
The windiest month (with the highest average wind speed) is February (9.3mph).
The calmest months (with the lowest average wind speed) are July and August (5.4mph).
Average humidity in September
Marion, AR
- Average humidity in September: 72%
The months with the highest relative humidity are March and December (78%).
The month with the lowest relative humidity is October (68%).
Average rainfall in September
Marion, AR
- Average rainfall in September: 0.43"
The wettest month (with the highest rainfall) is April (1.42").
The driest month (with the least rainfall) is September (0.43").
Average rainfall days in September
Marion, AR
- Average rainfall days in September: 8.2 days
The months with the highest number of rainy days are May and July (12.3 days).
The month with the least rainy days is October (6.5 days).
Average snowfall in September
Marion, AR
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.16").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Marion, AR
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.4 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
Marion, 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 48min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in September
Marion, AR
- Average sunshine days in September: 19.7 days
The month with the most sunshine days is October (22.1 days).
The month with the least sunshine days is June (14.9 days).
Average UV index in September
Marion, 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
Marion, AR
- Average cloud cover in September: 27
The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is June (Cloud cover 25).
Average visibility in September
Marion, 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).
Marion, Arkansas, USA
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