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 move into September in Owasso indicates a slight reduction in the average high-temperature, down from August's tropical 90.1°F (32.3°C) to a moderately hot 83.5°F (28.6°C). Owasso registers a consistent average low-temperature of 63.9°F (17.7°C) during September.Heat index
Throughout September, the heat index is computed to be a hot 89.6°F (32°C). When exposure and activity are sustained, they could induce fatigue, with a chance of heat cramps.Know that the heat index computations account for shaded terrains and slight winds. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a value derived by merging air temperature with the humidity to convey how the climate feels. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. 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 especially vital to children. Youngsters are usually more at risk than adults, considering they sweat less. Additionally, their high skin surface area compared to their little bodies and their high heat production due to activity increases their risk.
Humidity
In Owasso, the average relative humidity in September is 70%.Rainfall
In September, the rain falls for 10.1 days. Throughout September, 2.36" (60mm) of precipitation is accumulated. In Owasso, during the entire year, the rain falls for 126.3 days and collects up to 21.46" (545mm) of precipitation.Snowfall
April through October are months without snowfall.Daylight
In September, the average length of the day is 12h and 24min.On the first day of the month, sunrise is at 6:55 am and sunset at 7:50 pm. On the last day of September, sunrise is at 7:18 am and sunset at 7:07 pm CDT.
Sunshine
In Owasso, Oklahoma, the average sunshine in September is 8.9h.UV index
In Owasso, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the average person.Note: An average maximum UV index of 5 in September leads to these recommendations:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in September?
What is the average humidity in September?
How much does it rain in Owasso in September?
When it does not snow?
What is the average length of the day in September?
What time are sunrise and sunset in September in Owasso?
How many hours of sunshine does Owasso have in September?
What is the UV index reading in September in Owasso?
Average temperature in September
Owasso, OK
- Average high temperature in September: 83.5°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 (46.2°F).
- Average low temperature in September: 63.9°F
The month with the highest average low temperature is July (72.3°F).
The coldest month (with the lowest average low temperature) is January (30.9°F).
Average pressure in September
Owasso, 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 (29.9"Hg).
Average wind speed in September
Owasso, OK
- Average wind speed in September: 7.4mph
The windiest months (with the highest average wind speed) are March and April (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in September
Owasso, OK
- Average humidity in September: 70%
The month with the highest relative humidity is May (80%).
The months with the lowest relative humidity are August and October (67%).
Average rainfall in September
Owasso, OK
- Average rainfall in September: 2.36"
The wettest month (with the highest rainfall) is May (3.86").
The driest months (with the least rainfall) are February and November (0.87").
Average rainfall days in September
Owasso, OK
- Average rainfall days in September: 10.1 days
The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is January (6.2 days).
Average snowfall in September
Owasso, OK
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.67").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Owasso, OK
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Owasso, 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 5min
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 36min).
Average sunshine days in September
Owasso, OK
- Average sunshine days in September: 17.2 days
The month with the most sunshine days is January (21.9 days).
The month with the least sunshine days is May (13.5 days).
Average UV index in September
Owasso, 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
Owasso, 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 20).
Average visibility in September
Owasso, 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).
Owasso, Oklahoma, USA
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