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 marks a gentle change in average high-temperature, declining from August's 94.8°F (34.9°C) to a still hot 86°F (30°C). In September, Marietta reports a consistent average low-temperature of 67.3°F (19.6°C) during the nights.Heat index
For September, the heat index is evaluated at a hot 93.2°F (34°C). Preventive measures are required to mitigate the risk of heat cramps and heat exhaustion. Continuous activity may precipitate heatstroke.Always consider that heat index estimations are for light winds and places in the shade. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', shows a temperature sensation when both heat and moisture conditions are combined. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.
Humidity
The average relative humidity in September is 65%.Rainfall
In Marietta, in September, it is raining for 12.3 days, with typically 2.64" (67mm) of accumulated precipitation. In Marietta, during the entire year, the rain falls for 126.9 days and collects up to 28.23" (717mm) of precipitation.Snowfall
April through October are months without snowfall.Daylight
In Marietta, Oklahoma, the average length of the day in September is 12h and 22min.On the first day of the month, sunrise is at 7:02 am and sunset at 7:53 pm. On the last day of September, in Marietta, sunrise is at 7:22 am and sunset at 7:13 pm CDT.
Sunshine
In September, the average sunshine is 8.5h.UV index
In Marietta, Oklahoma, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the average person.Note: A daily maximum UV index of 6 in September translates into the following instructions:
Take precautions against overexposure. Protection against sun damage is needed. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot in Marietta during September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
How many hours of daylight does Marietta have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Marietta have in September?
What is the UV index reading in September?
Average temperature in September
Marietta, OK
- Average high temperature in September: 86°F
The warmest month (with the highest average high temperature) is August (94.8°F).
The month with the lowest average high temperature is January (52.2°F).
- Average low temperature in September: 67.3°F
The month with the highest average low temperature is July (73.9°F).
The coldest month (with the lowest average low temperature) is January (36°F).
Average pressure in September
Marietta, OK
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in September
Marietta, OK
- Average wind speed in September: 7mph
The windiest months (with the highest average wind speed) are March and April (10.4mph).
The calmest month (with the lowest average wind speed) is September (7mph).
Average humidity in September
Marietta, OK
- Average humidity in September: 65%
The month with the highest relative humidity is May (76%).
The month with the lowest relative humidity is August (58%).
Average rainfall in September
Marietta, OK
- Average rainfall in September: 2.64"
The wettest month (with the highest rainfall) is May (3.86").
The driest months (with the least rainfall) are January and December (1.42").
Average rainfall days in September
Marietta, OK
- Average rainfall days in September: 12.3 days
The month with the highest number of rainy days is May (14.6 days).
The month with the least rainy days is January (6.4 days).
Average snowfall in September
Marietta, OK
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.22").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Marietta, OK
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.7 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
Marietta, OK
- 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: 8h and 3min
The month with the most sunshine is August (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in September
Marietta, OK
- Average sunshine days in September: 15.4 days
The month with the most sunshine days is January (23.1 days).
The month with the least sunshine days is May (15 days).
Average UV index in September
Marietta, OK
- Average UV index in September: 6
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, February and December (UV index 3).
Average cloud cover in September
Marietta, OK
- Average cloud cover in September: 28
The month with the most cloud cover is March (Cloud cover 38).
The month with the least cloud cover is August (Cloud cover 20).
Average visibility in September
Marietta, OK
- 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).
Marietta, Oklahoma, USA
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