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
Cooperton observes a minor decrease in the average high-temperature with the arrival of September, falling from August's fiery hot 95°F (35°C) to a moderately hot 85.8°F (29.9°C). An average nighttime temperature of 67.1°F (19.5°C) is witnessed throughout September.Heat index
September's average heat index is calculated to be a tropical 91.4°F (33°C). Use additional protective measures, heat cramps and heat exhaustion are possible outcomes. Continuous activity might lead to heatstroke.The standards for the heat index are set for locations in shade and under light breezes. The direct sunshine could escalate the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
Humidity
In Cooperton, the average relative humidity in September is 60%.Rainfall
In Cooperton, in September, it is raining for 11.3 days, with typically 2.01" (51mm) of accumulated precipitation. In Cooperton, during the entire year, the rain falls for 98.2 days and collects up to 19.29" (490mm) of precipitation.Snowfall
In Cooperton, snow does not fall in May 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 7:08 am and sunset at 8:01 pm. On the last day of September, sunrise is at 7:30 am and sunset at 7:20 pm CDT.
Sunshine
In September, the average sunshine is 8.8h.UV index
The average daily maximum UV index in September in Cooperton is 5. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the ordinary person.Note: The maximum UV index of 5 during September translates into these guidelines:
Ensure safety - Sun damage prevention is strongly urged. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is September?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
How many hours of daylight does Cooperton have in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Cooperton have in September?
How high is the UV index in September?
Average temperature in September
Cooperton, OK
- Average high temperature in September: 85.8°F
The warmest month (with the highest average high temperature) is July (95.9°F).
The month with the lowest average high temperature is December (50.2°F).
- Average low temperature in September: 67.1°F
The month with the highest average low temperature is July (75°F).
The coldest month (with the lowest average low temperature) is January (32.2°F).
Average pressure in September
Cooperton, OK
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in September
Cooperton, OK
- Average wind speed in September: 9.4mph
The windiest month (with the highest average wind speed) is April (12.7mph).
The calmest month (with the lowest average wind speed) is August (9.1mph).
Average humidity in September
Cooperton, OK
- Average humidity in September: 60%
The month with the highest relative humidity is May (63%).
The month with the lowest relative humidity is August (51%).
Average rainfall in September
Cooperton, OK
- Average rainfall in September: 2.01"
The wettest month (with the highest rainfall) is May (3.07").
The driest month (with the least rainfall) is February (0.75").
Average rainfall days in September
Cooperton, OK
- Average rainfall days in September: 11.3 days
The month with the highest number of rainy days is May (11.8 days).
The month with the least rainy days is January (3.6 days).
Average snowfall in September
Cooperton, OK
- Average snowfall in September: 0"
The month with the highest snowfall is January (1.42").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Cooperton, OK
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.7 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Cooperton, OK
- 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 54min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is December (Average sunshine: 6h and 24min).
Average sunshine days in September
Cooperton, OK
- Average sunshine days in September: 17.2 days
The month with the most sunshine days is January (25.8 days).
The month with the least sunshine days is May (16.6 days).
Average UV index in September
Cooperton, OK
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in September
Cooperton, OK
- Average cloud cover in September: 26
The month with the most cloud cover is March (Cloud cover 32).
The months with the least cloud cover are June and August (Cloud cover 18).
Average visibility in September
Cooperton, 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).
Cooperton, Oklahoma, USA
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