September weather forecastCoweta, OK
September
Weather in September
The first month of the autumn, September, is still a warm month in Coweta, Oklahoma, with an average temperature varying between 64°F (17.8°C) and 83.8°F (28.8°C).Temperature
The transition into September involves a small decrease in the average high-temperature, dipping slightly from a tropical 90.5°F (32.5°C) in August to a warm 83.8°F (28.8°C). An average low-temperature of 64°F (17.8°C) is recorded during the nights in September.Heat index
The heat index value during September is calculated to be a tropical 89.6°F (32°C). With prolonged exposure and constant activity, one might feel exhausted and experience heat cramps.In reference to the heat index, it's for places in shade and with a slight wind. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'real feel' or 'apparent temperature', shows a temperature sensation when both heat and moisture conditions are combined. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.
Humidity
The average relative humidity in September is 70%.Rainfall
In Coweta, in September, it is raining for 9 days, with typically 1.42" (36mm) of accumulated precipitation. In Coweta, during the entire year, the rain falls for 102.8 days and collects up to 14.37" (365mm) of precipitation.Snowfall
In Coweta, snow does not fall in April 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 6:55 am and sunset at 7:49 pm. On the last day of September, sunrise is at 7:17 am and sunset at 7:07 pm CDT.
Sunshine
In September, the average sunshine is 9h.UV index
In September, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: The UV index of 5 in September translates into these instructions:
Be vigilant - Preventing sunburn is recommended. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. 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
Average temperature in September
Coweta, OK
- Average high temperature in September: 83.8°F
The warmest month (with the highest average high temperature) is July (91.2°F).
The month with the lowest average high temperature is January (46.6°F).
- Average low temperature in September: 64°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 (31.5°F).
Average pressure in September
Coweta, OK
- Average pressure in September: 29.99"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in September
Coweta, OK
- Average wind speed in September: 7.4mph
The windiest month (with the highest average wind speed) is March (10.7mph).
The calmest month (with the lowest average wind speed) is July (6.9mph).
Average humidity in September
Coweta, OK
- Average humidity in September: 70%
The month with the highest relative humidity is May (80%).
The months with the lowest relative humidity are August and October (68%).
Average rainfall in September
Coweta, OK
- Average rainfall in September: 1.42"
The wettest month (with the highest rainfall) is May (2.36").
The driest months (with the least rainfall) are February and December (0.67").
Average rainfall days in September
Coweta, OK
- Average rainfall days in September: 9 days
The month with the highest number of rainy days is May (12.5 days).
The month with the least rainy days is December (5.1 days).
Average snowfall in September
Coweta, OK
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.55").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Coweta, OK
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Coweta, OK
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in September: 9h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).
Average sunshine days in September
Coweta, OK
- Average sunshine days in September: 19 days
The month with the most sunshine days is January (23.3 days).
The month with the least sunshine days is May (15.9 days).
Average UV index in September
Coweta, OK
- 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 and December (UV index 2).
Average cloud cover in September
Coweta, OK
- Average cloud cover in September: 27
The month with the most cloud cover is March (Cloud cover 42).
The month with the least cloud cover is August (Cloud cover 21).
Average visibility in September
Coweta, 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).





