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 92.8°F (33.8°C) to a moderately hot 84.6°F (29.2°C). Bethany experiences an average nighttime temperature of 65.7°F (18.7°C) in the month of September.Heat index
In September, the average heat index is appraised at a tropical 89.6°F (32°C). Enduring exposure and unrelenting activity might cause a state of weariness, potentially leading to heat cramps.Given the heat index, its values are aligned with shaded sites and gentle winds. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
Note: The heat index, also known as 'felt air temperature' or 'real feel', shows a temperature sensation when both heat and moisture conditions are combined. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. Keep it in mind, direct sunlight can augment the heat you experience, possibly pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. 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
The average relative humidity in September is 65%.Rainfall
In Bethany, in September, during 13 rainfall days, 2.76" (70mm) of precipitation is typically accumulated. Throughout the year, there are 120.9 rainfall days, and 24.65" (626mm) of precipitation is accumulated.Snowfall
In Bethany, snow does not fall in May through October.Daylight
In Bethany, the average length of the day in September is 12h and 23min.On the first day of the month, sunrise is at 7:03 am and sunset at 7:57 pm. On the last day of September, in Bethany, sunrise is at 7:25 am and sunset at 7:15 pm CDT.
Sunshine
The average sunshine in September is 8.6h.UV index
In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: The daily high UV index of 5 during September translates into the following recommendations:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
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 many days does it rain in September?
When it does not snow?
What is the average length of the day in September?
When is the sunrise / sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Bethany, OK
- Average high temperature in September: 84.6°F
The warmest month (with the highest average high temperature) is July (93.7°F).
The month with the lowest average high temperature is January (48.6°F).
- Average low temperature in September: 65.7°F
The month with the highest average low temperature is July (73.2°F).
The coldest month (with the lowest average low temperature) is January (31.6°F).
Average pressure in September
Bethany, OK
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in September
Bethany, OK
- Average wind speed in September: 9mph
The windiest month (with the highest average wind speed) is April (12.4mph).
The calmest month (with the lowest average wind speed) is August (8.7mph).
Average humidity in September
Bethany, OK
- Average humidity in September: 65%
The month with the highest relative humidity is May (73%).
The month with the lowest relative humidity is August (59%).
Average rainfall in September
Bethany, OK
- Average rainfall in September: 2.76"
The wettest month (with the highest rainfall) is May (4.09").
The driest month (with the least rainfall) is December (0.94").
Average rainfall days in September
Bethany, OK
- Average rainfall days in September: 13 days
The month with the highest number of rainy days is May (14.6 days).
The month with the least rainy days is January (4.4 days).
Average snowfall in September
Bethany, OK
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.3").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Bethany, OK
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.2 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
Bethany, 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 48min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).
Average sunshine days in September
Bethany, OK
- Average sunshine days in September: 14.4 days
The month with the most sunshine days is January (24.3 days).
The month with the least sunshine days is May (13.8 days).
Average UV index in September
Bethany, 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
Bethany, OK
- Average cloud cover in September: 27
The month with the most cloud cover is March (Cloud cover 37).
The month with the least cloud cover is August (Cloud cover 19).
Average visibility in September
Bethany, 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).
Bethany, Oklahoma, USA
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