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
The arrival of September correlates with a minor temperature reduction, down from August's hot 93.9°F (34.4°C) to a still tropical 86.7°F (30.4°C). September brings Swink a consistent average low-temperature of 66°F (18.9°C).Heat index
The heat index for September is calculated to be a very hot 96.8°F (36°C). Exercise extra preventive actions, heat cramps and heat exhaustion are plausible. Continuous activity could result in heatstroke.Evaluating the heat index requires understanding its values in the shade and with gentle winds. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', melds the effects of warmth and moisture to generate a feeling of heat. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. 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 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.
Evaporating sweat, an outcome of perspiration, is key in assisting the human body to moderate its temperature. When relative humidity is heightened, it slows the rate of evaporation, thereby decreasing the body's ability to shed heat and creating a sensation of overheating. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.
Humidity
In September, the average relative humidity in Swink, Oklahoma, is 68%.Rainfall
In September, the rain falls for 12 days. Throughout September, 2.68" (68mm) of precipitation is accumulated. In Swink, during the entire year, the rain falls for 143.9 days and collects up to 36.61" (930mm) of precipitation.Snowfall
April through October are months without snowfall in Swink.Daylight
The average length of the day in September is 12h and 22min.On the first day of the month, sunrise is at 6:54 am and sunset at 7:46 pm. On the last day of September, sunrise is at 7:15 am and sunset at 7:05 pm CDT.
Sunshine
In September, the average sunshine is 8.9h.UV index
In September, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: The UV index of 6 in September translates into these instructions:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. Opt for tightly woven and loose clothing to enhance protection from the Sun.
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 much does it rain in September?
When it does not snow?
What is the average length of the day in September?
When are sunrise and sunset in September?
How long on average sun shines in September?
How high is the UV index in September?
Average temperature in September
Swink, OK
- Average high temperature in September: 86.7°F
The warmest month (with the highest average high temperature) is August (93.9°F).
The month with the lowest average high temperature is January (51.4°F).
- Average low temperature in September: 66°F
The month with the highest average low temperature is July (72.5°F).
The coldest month (with the lowest average low temperature) is January (35.2°F).
Average pressure in September
Swink, 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 (29.91"Hg).
Average wind speed in September
Swink, OK
- Average wind speed in September: 6.3mph
The windiest months (with the highest average wind speed) are March and April (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.9mph).
Average humidity in September
Swink, OK
- Average humidity in September: 68%
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is August (65%).
Average rainfall in September
Swink, OK
- Average rainfall in September: 2.68"
The wettest month (with the highest rainfall) is May (4.8").
The driest month (with the least rainfall) is January (1.93").
Average rainfall days in September
Swink, OK
- Average rainfall days in September: 12 days
The months with the highest number of rainy days are March and May (14.6 days).
The month with the least rainy days is January (9.1 days).
Average snowfall in September
Swink, 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
Swink, OK
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.4 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Swink, 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 5min
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 12min).
Average sunshine days in September
Swink, OK
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is January (19.6 days).
The month with the least sunshine days is May (14.5 days).
Average UV index in September
Swink, OK
- Average UV index in September: 6
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
Swink, OK
- Average cloud cover in September: 29
The month with the most cloud cover is February (Cloud cover 46).
The month with the least cloud cover is August (Cloud cover 24).
Average visibility in September
Swink, 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).
Swink, Oklahoma, USA
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