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 commencement of September indicates a gentle shift in the average high-temperature, receding from August's tropical 92.5°F (33.6°C) to a moderately hot 85.5°F (29.7°C). Despite considerable daily temperature swings, a steady low-temperature average of 63.3°F (17.4°C) is noted throughout September.Heat index
For most parts of September, the heat index is evaluated at a hot 93.2°F (34°C). Heightened precautions are necessary, heat cramps and heat exhaustion are potential risks. Continuous activity could lead to heatstroke.Factoring in the heat index, values are geared towards shaded areas with light breezes. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.
Humidity
In Heavener, the average relative humidity in September is 70%.Rainfall
In Heavener, during September, the rain falls for 11.7 days and regularly aggregates up to 2.52" (64mm) of precipitation. In Heavener, during the entire year, the rain falls for 146.2 days and collects up to 33.62" (854mm) of precipitation.Snowfall
April through November are months without snowfall in Heavener.Daylight
In Heavener, the average length of the day in September is 12h and 23min.On the first day of September, sunrise is at 6:51 am and sunset at 7:44 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 7:03 pm CDT.
Sunshine
In Heavener, the average sunshine in September is 9.3h.UV index
In September, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for the ordinary person.Note: The daily high UV index of 6 in September translates into this advice:
Resist overexposure. Safeguarding from solar damage is indispensable. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Frequently asked questions
How hot is September in Heavener?
What is the average humidity in September in Heavener?
How many days does it rain in September in Heavener?
When it does not snow in Heavener?
How many hours of daylight does Heavener have in September?
When is the sunrise / sunset in September in Heavener?
How many hours of sunshine does Heavener have in September?
What is the UV index reading in September in Heavener?
Average temperature in September
Heavener, OK
- Average high temperature in September: 85.5°F
The warmest month (with the highest average high temperature) is July (93.2°F).
The month with the lowest average high temperature is January (49.1°F).
- Average low temperature in September: 63.3°F
The month with the highest average low temperature is July (71.2°F).
The coldest month (with the lowest average low temperature) is January (32.2°F).
Average pressure in September
Heavener, OK
- Average pressure in September: 30"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Heavener, OK
- Average wind speed in September: 5.3mph
The windiest month (with the highest average wind speed) is April (8.1mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in September
Heavener, OK
- Average humidity in September: 70%
The months with the highest relative humidity are February, March and May (76%).
The month with the lowest relative humidity is August (69%).
Average rainfall in September
Heavener, OK
- Average rainfall in September: 2.52"
The wettest month (with the highest rainfall) is May (4.13").
The driest month (with the least rainfall) is January (1.97").
Average rainfall days in September
Heavener, OK
- Average rainfall days in September: 11.7 days
The month with the highest number of rainy days is August (14.9 days).
The month with the least rainy days is November (9 days).
Average snowfall in September
Heavener, OK
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.14").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Heavener, 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
Heavener, OK
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in September: 9h and 2min
The months with the most sunshine are July and August (Average sunshine: 10h and 36min).
The months with the least sunshine are January and December (Average sunshine: 5h and 24min).
Average sunshine days in September
Heavener, OK
- Average sunshine days in September: 16.4 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is July (13.2 days).
Average UV index in September
Heavener, OK
- Average UV index in September: 6
The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in September
Heavener, OK
- Average cloud cover in September: 28
The month with the most cloud cover is February (Cloud cover 46).
The months with the least cloud cover are June and August (Cloud cover 25).
Average visibility in September
Heavener, 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).
Heavener, Oklahoma, USA
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