September weather forecastWann, OK
September
Weather in September
The first month of the autumn, September, is still a warm month in Wann, Oklahoma, with an average temperature fluctuating between 62.2°F (16.8°C) and 81.5°F (27.5°C).Temperature
The onset of September results in a small decrease in the average high-temperature, moderately receding from a tropical 88.3°F (31.3°C) in August to a warm 81.5°F (27.5°C). In the month of September, Wann's average low-temperature falls to an enjoyable 62.2°F (16.8°C).Heat index
September's mean heat index is appraised at a hot 86°F (30°C). If exposure and activity persist, fatigue could ensue, possibly leading to heat cramps.One should consider that heat index numbers are for shaded settings and light wind. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. Considering the impact of direct sunlight, it's possible for the heat index to surge by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.
Humidity
The average relative humidity in September in Wann is 72%.Rainfall
In Wann, in September, during 11.5 rainfall days, 2.09" (53mm) of precipitation is typically accumulated. Throughout the year, there are 120.1 rainfall days, and 22.64" (575mm) of precipitation is accumulated.Snowfall
April through October are months without snowfall.Daylight
In Wann, the average length of the day in September is 12h and 24min.On the first day of the month, sunrise is at 6:54 am and sunset at 7:51 pm. On the last day of September, sunrise is at 7:18 am and sunset at 7:07 pm CDT.
Sunshine
In Wann, the average sunshine in September is 9h.UV index
In September, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the average person.Note: In September, a daily UV index of 5 turns into the following recommendations:
Adopt protective measures - It is advised to guard against sun damage. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Wann, OK
- Average high temperature in September: 81.5°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 (43.3°F).
- Average low temperature in September: 62.2°F
The month with the highest average low temperature is July (70.9°F).
The coldest month (with the lowest average low temperature) is January (28°F).
Average pressure in September
Wann, OK
- Average pressure in September: 29.99"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
Wann, OK
- Average wind speed in September: 7.9mph
The windiest month (with the highest average wind speed) is March (11.1mph).
The calmest months (with the lowest average wind speed) are July and August (7.3mph).
Average humidity in September
Wann, OK
- Average humidity in September: 72%
The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is October (68%).
Average rainfall in September
Wann, OK
- Average rainfall in September: 2.09"
The wettest month (with the highest rainfall) is May (4.13").
The driest month (with the least rainfall) is November (0.63").
Average rainfall days in September
Wann, OK
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is May (14.4 days).
The month with the least rainy days is January (4.8 days).
Average snowfall in September
Wann, OK
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.06").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Wann, OK
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.8 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
Wann, OK
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 9h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is January (Average sunshine: 5h and 42min).
Average sunshine days in September
Wann, OK
- Average sunshine days in September: 17.4 days
The month with the most sunshine days is January (23.7 days).
The month with the least sunshine days is May (14.3 days).
Average UV index in September
Wann, OK
- Average UV index in September: 5
The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in September
Wann, OK
- Average cloud cover in September: 27
The month with the most cloud cover is March (Cloud cover 41).
The month with the least cloud cover is August (Cloud cover 23).
Average visibility in September
Wann, 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).
