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 heralds a minor drop in average high-temperature, sliding from August's hot 93.7°F (34.3°C) to a moderately hot 84.7°F (29.3°C). Wynnewood experiences a mean low-temperature of 66°F (18.9°C) during September.Heat index
September's average heat index is appraised at a tropical 91.4°F (33°C). More safety actions are required, heat exhaustion and heat cramps are probable. Long-term activity may precipitate heatstroke.In the scope of the heat index, its values resonate with shade and light wind conditions. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. 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 September, the average relative humidity is 67%.Rainfall
In September, the rain falls for 12.6 days. Throughout September, 2.68" (68mm) of precipitation is accumulated. Throughout the year, there are 126.3 rainfall days, and 25.75" (654mm) of precipitation is accumulated.Snowfall
In Wynnewood, Oklahoma, snow does not fall in May through October.Daylight
In September, the average length of the day is 12h and 23min.On the first day of the month, sunrise is at 7:02 am and sunset at 7:54 pm. On the last day of September, sunrise is at 7:23 am and sunset at 7:13 pm CDT.
Sunshine
In Wynnewood, the average sunshine in September is 8.5h.UV index
In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the average person.Note: In September, the maximum UV index of 5 suggests this advice:
Take measures. Individuals with light skin might experience burns in under 30 minutes. To guard against the harmful effects of the Sun, minimize exposure during midday. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is September in Wynnewood?
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 Wynnewood have in September?
When are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
Wynnewood, OK
- Average high temperature in September: 84.7°F
The warmest month (with the highest average high temperature) is August (93.7°F).
The month with the lowest average high temperature is January (49.8°F).
- Average low temperature in September: 66°F
The month with the highest average low temperature is July (73°F).
The coldest month (with the lowest average low temperature) is January (33.4°F).
Average pressure in September
Wynnewood, 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 (29.88"Hg).
Average wind speed in September
Wynnewood, OK
- Average wind speed in September: 7.9mph
The windiest months (with the highest average wind speed) are March and April (11.2mph).
The calmest month (with the lowest average wind speed) is July (7.7mph).
Average humidity in September
Wynnewood, OK
- Average humidity in September: 67%
The month with the highest relative humidity is May (77%).
The month with the lowest relative humidity is August (60%).
Average rainfall in September
Wynnewood, OK
- Average rainfall in September: 2.68"
The wettest month (with the highest rainfall) is May (3.94").
The driest month (with the least rainfall) is February (1.22").
Average rainfall days in September
Wynnewood, OK
- Average rainfall days in September: 12.6 days
The month with the highest number of rainy days is May (14.5 days).
The month with the least rainy days is January (5.9 days).
Average snowfall in September
Wynnewood, OK
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.34").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Wynnewood, OK
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2 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
Wynnewood, 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 months with the most sunshine are July and August (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).
Average sunshine days in September
Wynnewood, OK
- Average sunshine days in September: 14.5 days
The month with the most sunshine days is January (23.3 days).
The month with the least sunshine days is May (13.5 days).
Average UV index in September
Wynnewood, 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
Wynnewood, OK
- Average cloud cover in September: 27
The month with the most cloud cover is March (Cloud cover 37).
The month with the least cloud cover is August (Cloud cover 19).
Average visibility in September
Wynnewood, 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).
Wynnewood, Oklahoma, USA
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