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 is marked by a subtle drop in average high-temperatures, transitioning from a tropical 90.3°F (32.4°C) in August to a moderately hot 83.3°F (28.5°C). In Wynona, in September, the average low-temperature is a refreshing 63.7°F (17.6°C).Heat index
The average heat index in September is computed to be a hot 89.6°F (32°C). Continuing activity during long-lasting exposure might induce tiredness and result in heat cramps.Take note of the fact that heat index values are based on shaded circumstances with light airflows. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'real feel' or 'apparent temperature', provides an understanding of perceived warmth by combining temperature and relative humidity. The influence of weather is personal, differing among a variety of individuals based on differences in body mass, stature, and the level of physical activity. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
Humidity
In Wynona, the average relative humidity in September is 70%.Rainfall
In Wynona, in September, during 11.9 rainfall days, 3.35" (85mm) of precipitation is typically accumulated. In Wynona, during the entire year, the rain falls for 131.7 days and collects up to 29.06" (738mm) of precipitation.Snowfall
April through October are months without snowfall in Wynona.Daylight
In September, the average length of the day is 12h and 24min.On the first day of the month, sunrise is at 6:57 am and sunset at 7:52 pm. On the last day of September, sunrise is at 7:20 am and sunset at 7:09 pm CDT.
Sunshine
The average sunshine in September in Wynona is 8.7h.UV index
The average daily maximum UV index in September in Wynona, Oklahoma, 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: In September, the UV index of 5 transforms into the following advice:
Heed the precautions - It is counselled to guard against solar damage. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Frequently asked questions
How hot does it get in Wynona in September?
What is the average humidity in September in Wynona?
How many days does it rain in September in Wynona?
When it does not snow in Wynona?
What is the average length of the day in September in Wynona?
What time are sunrise and sunset in September in Wynona?
How long on average sun shines in September in Wynona?
What is the UV index intensity in September in Wynona?
Average temperature in September
Wynona, OK
- Average high temperature in September: 83.3°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 (45.5°F).
- Average low temperature in September: 63.7°F
The month with the highest average low temperature is July (72°F).
The coldest month (with the lowest average low temperature) is January (30°F).
Average pressure in September
Wynona, OK
- Average pressure in September: 29.98"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
Wynona, OK
- Average wind speed in September: 8mph
The windiest months (with the highest average wind speed) are March and April (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.5mph).
Average humidity in September
Wynona, OK
- Average humidity in September: 70%
The month with the highest relative humidity is May (79%).
The months with the lowest relative humidity are January and October (66%).
Average rainfall in September
Wynona, OK
- Average rainfall in September: 3.35"
The wettest month (with the highest rainfall) is May (5.2").
The driest months (with the least rainfall) are January, November and December (1.1").
Average rainfall days in September
Wynona, OK
- Average rainfall days in September: 11.9 days
The month with the highest number of rainy days is May (15 days).
The month with the least rainy days is January (5.7 days).
Average snowfall in September
Wynona, OK
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.38").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Wynona, OK
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.5 days).
The months with the least snowfall days are April, May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Wynona, OK
- Average daylight in September: 12h and 2min
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 42min).
- Average sunshine in September: 8h and 4min
The months with the most sunshine are July and August (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).
Average sunshine days in September
Wynona, OK
- Average sunshine days in September: 16.4 days
The month with the most sunshine days is January (23 days).
The month with the least sunshine days is April (13.4 days).
Average UV index in September
Wynona, OK
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in September
Wynona, OK
- Average cloud cover in September: 28
The month with the most cloud cover is March (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 22).
Average visibility in September
Wynona, 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).
Wynona, Oklahoma, USA
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