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 onset of September is marked by a minor decrease in temperature, transitioning from a hot 88.9°F (31.6°C) in August to a warm 82°F (27.8°C). Throughout the nights in September, an average low-temperature of 62.8°F (17.1°C) is noted.Heat index
During September, the heat index is estimated at a tropical 86°F (30°C). Ongoing activity coupled with exposure often results in weariness and could induce heat cramps.Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. 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 'real feel' or 'feels like', stands as a testimony to how temperature and humidity combine to impact our sense of 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. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Children frequently do not understand the need for recuperation and hydration. Thirst, being a late manifestation of dehydration, underlines the need to hydrate frequently, especially when engaging in prolonged physical exercises.
Humidity
The average relative humidity in September is 71%.Rainfall
In Bartlesville, during September, the rain falls for 12 days and regularly aggregates up to 2.83" (72mm) of precipitation. Throughout the year, there are 131.6 rainfall days, and 29.06" (738mm) of precipitation is accumulated.Snowfall
In Bartlesville, snow does not fall in April through October.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 7:51 pm. On the last day of September, sunrise is at 7:18 am and sunset at 7:08 pm CDT.
Sunshine
In September, the average sunshine in Bartlesville is 8.9h.UV index
The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the average person.Note: A maximum UV index of 5 in September translates into the following recommendations:
Exercise prevention - Protecting skin and eyes from harm is required. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Bartlesville?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
How many hours of daylight does Bartlesville have in September?
When are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Bartlesville, OK
- Average high temperature in September: 82°F
The warmest month (with the highest average high temperature) is July (90.5°F).
The month with the lowest average high temperature is January (45.1°F).
- Average low temperature in September: 62.8°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 (29.3°F).
Average pressure in September
Bartlesville, 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 (29.89"Hg).
Average wind speed in September
Bartlesville, OK
- Average wind speed in September: 7.8mph
The windiest month (with the highest average wind speed) is March (10.9mph).
The calmest month (with the lowest average wind speed) is July (7.1mph).
Average humidity in September
Bartlesville, OK
- Average humidity in September: 71%
The month with the highest relative humidity is May (80%).
The months with the lowest relative humidity are January, October and November (68%).
Average rainfall in September
Bartlesville, OK
- Average rainfall in September: 2.83"
The wettest month (with the highest rainfall) is May (5.08").
The driest month (with the least rainfall) is November (1.02").
Average rainfall days in September
Bartlesville, OK
- Average rainfall days in September: 12 days
The month with the highest number of rainy days is May (15.6 days).
The month with the least rainy days is January (5.8 days).
Average snowfall in September
Bartlesville, OK
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.34").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Bartlesville, 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 April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Bartlesville, 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 month with the most sunshine is July (Average sunshine: 10h and 54min).
The months with the least sunshine are January and December (Average sunshine: 5h and 48min).
Average sunshine days in September
Bartlesville, OK
- Average sunshine days in September: 15.9 days
The month with the most sunshine days is January (22.5 days).
The month with the least sunshine days is May (13.3 days).
Average UV index in September
Bartlesville, 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
Bartlesville, 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 22).
Average visibility in September
Bartlesville, 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).
Bartlesville, Oklahoma, USA
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