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
A subtle shift in Broken Arrow's weather is observed as August turns into September, with the average high temperature reducing from a tropical 90.5°F (32.5°C) to a warm 83.8°F (28.8°C). An average low-temperature of 64°F (17.8°C) is noted during the month of September.Heat index
In September, the average heat index is evaluated at a tropical 89.6°F (32°C). Remaining active during long-lasting exposure could cause fatigue, leading to heat cramps.Given the heat index, its values are aligned with shaded sites and gentle winds. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. 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. One's exposure to direct sunlight has the potential to intensify the heat sensation, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Kids frequently ignore the importance of taking a break and rehydrating. Thirst is a late symptom of dehydration - thus, it is crucial to stay hydrated, especially during long-lasting physical activities.
Humidity
In Broken Arrow, Oklahoma, the average relative humidity in September is 70%.Rainfall
In Broken Arrow, during September, the rain falls for 11.6 days and regularly aggregates up to 3.23" (82mm) of precipitation. In Broken Arrow, during the entire year, the rain falls for 131.3 days and collects up to 29.84" (758mm) of precipitation.Snowfall
In Broken Arrow, snow does not fall in April through October.Daylight
The average length of the day in September is 12h and 23min.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
The average sunshine in September in Broken Arrow is 8.9h.UV index
In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: In September, a regular UV index of 5 translates into these guidelines:
Ensure safety - Sun damage prevention is strongly urged. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Frequently asked questions
How hot is it in Broken Arrow in September?
What is the average humidity in September in Broken Arrow?
How many days does it rain in September in Broken Arrow?
When it does not snow in Broken Arrow?
What is the average length of the day in September in Broken Arrow?
When is the sunrise / sunset in September in Broken Arrow?
How many hours of sunshine does Broken Arrow have in September?
What is the UV index intensity in September in Broken Arrow?
Average temperature in September
Broken Arrow, OK
- Average high temperature in September: 83.8°F
The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is January (46.4°F).
- Average low temperature in September: 64°F
The month with the highest average low temperature is July (72.1°F).
The coldest month (with the lowest average low temperature) is January (31.5°F).
Average pressure in September
Broken Arrow, 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
Broken Arrow, OK
- Average wind speed in September: 7.5mph
The windiest month (with the highest average wind speed) is March (10.7mph).
The calmest month (with the lowest average wind speed) is July (7mph).
Average humidity in September
Broken Arrow, OK
- Average humidity in September: 70%
The month with the highest relative humidity is May (80%).
The months with the lowest relative humidity are January, August and October (68%).
Average rainfall in September
Broken Arrow, OK
- Average rainfall in September: 3.23"
The wettest month (with the highest rainfall) is May (5.16").
The driest months (with the least rainfall) are January and February (1.38").
Average rainfall days in September
Broken Arrow, OK
- Average rainfall days in September: 11.6 days
The month with the highest number of rainy days is May (15.9 days).
The month with the least rainy days is January (6.2 days).
Average snowfall in September
Broken Arrow, OK
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.5").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Broken Arrow, 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, September and October (0 days).
Average daylight in September /
Average sunshine in September
Broken Arrow, 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 48min).
- 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
Broken Arrow, OK
- Average sunshine days in September: 16.6 days
The month with the most sunshine days is December (22 days).
The month with the least sunshine days is May (13.4 days).
Average UV index in September
Broken Arrow, OK
- Average UV index in September: 5
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in September
Broken Arrow, OK
- Average cloud cover in September: 28
The month with the most cloud cover is March (Cloud cover 41).
The month with the least cloud cover is August (Cloud cover 21).
Average visibility in September
Broken Arrow, 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).
Broken Arrow, Oklahoma, USA
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