Tulsa
Oklahoma, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Tulsa, OK

A bridge over the Arkansas River overlooking the scenic Tulsa city in Oklahoma
A bridge over the Arkansas River overlooking the scenic Tulsa city in Oklahoma
September, the first month of the autumn, in Tulsa, is still a warm month, with average temperature ranging between min 62.1°F (16.7°C) and max 83.8°F (28.8°C).

Temperature

In Tulsa, the average high-temperature in September decreases, from a hot 93°F (33.9°C) in August, to a warm 83.8°F (28.8°C). In Tulsa, in September, the average low-temperature is 62.1°F (16.7°C).

Heat index

The average heat index is calculated to a hot 90.1°F (32.3°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'real feel', 'apparent temperature', or 'felt air temperature', is a measure of how hot it feels when the actual air humidity is factored in. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (clothing, metabolic differences, wind). Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

September is the most humid month in Tulsa, with an average relative humidity of 70.1%.

Rainfall

In September, in Tulsa, the rain falls for 8 days. Throughout September, 4.3" (108.2mm) of precipitation is accumulated. Throughout the year, in Tulsa, there are 92.9 rainfall days, and 41" (1040.7mm) of precipitation is accumulated.

Snowfall

Throughout the year, in Tulsa, 9.6" (243.8mm) of snow is accumulated.

Daylight

In September, the average length of the day is 12.4h.

Sunshine

The average sunshine in Tulsa, Oklahoma, is 7.8h.

UV index

In Tulsa, Oklahoma, the average daily maximum UV index in September is 7. A UV Index estimate of 6 to 7 represents a high threat to health from unsafe exposure to the UV radiation for average individuals.
Note: The daily maximum UV index of 7 in September interpret into the following advice:
Take precautions against overexposure. Protection against sun damage is needed. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.

What is the temperature in September in Tulsa?

In September, in Tulsa, the average high-temperature is 83.8°F (28.8°C), and the average low-temperature is 62.1°F (16.7°C). In September, the average heat index (a.k.a. 'apparent temperature', 'real feel'), that represents influence of the relative humidity to air temperaure, is evaluated at 90.1°F (32.3°C).

What is the most humid month in Tulsa?

September is the most humid month in Tulsa, Oklahoma, with an average relative humidity of 70.1%.

What is the average humidity in September in Tulsa?

In Tulsa, the average relative humidity in September is 70.1%.

How many days does it rain in September in Tulsa?

In Tulsa, Oklahoma, in September, during 8 rainfall days, 4.3" (108.2mm) of precipitation is typically accumulated.

What is the average length of the day in September in Tulsa?

The average length of the day in September in Tulsa is 12.4h.

How many hours of sunshine does Tulsa have in September?

The average sunshine in September in Tulsa, Oklahoma, is 7.8h.

What is the UV index intensity in September in Tulsa?

In September, the average daily maximum UV index in Tulsa, Oklahoma, is 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from the exposure to the Sun's UV radiation.
Average temperature in September - Tulsa, OK
  • Average high temperature in September: 83.9°F

Warmest months (with the highest average high temperature) are July and August (93.1°F).
The month with the lowest average high temperature is January (48°F).

  • Average low temperature in September: 62.1°F

The month with the highest average low temperature is July (72.7°F).
The coldest month (with the lowest average low temperature) is January (27.5°F).

Average humidity in September - Tulsa, OK
  • Average humidity in September: 70.1%

The month with the highest relative humidity is September (70.1%).
The month with the lowest relative humidity is April (61.2%).

Average rainfall in September - Tulsa, OK
  • Average rainfall in September: 4.3"

The wettest month (with the highest rainfall) is May (5.9").
The driest month (with the lowest rainfall) is January (1.7").

Average rainfall days in September - Tulsa, OK
  • Average rainfall days in September: 8 days

The month with the highest number of rainy days is May (10.5 days).
The month with the lowest number of rainy days is January (6.1 days).

Average snowfall in September - Tulsa, OK
  • Average snowfall in September: 0"

The month with the highest snowfall is January (2.7").
Months with the lowest snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in September - Tulsa, OK
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (1.9 days).
Months with the lowest number of snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight in September / Average sunshine in September - Tulsa, OK
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.6h).
The month with shortest days is December (Average daylight: 9.7h).

  • Average sunshine in September: 7.8h

The month with most sunshine is July (Average sunshine: 10.8h).
The month with least sunshine is December (Average sunshine: 5.2h).

Average UV index in September - Tulsa, OK
  • Average UV index in September: 7

Months with the highest UV index are June and July (UV index 10).
Months with the lowest UV index are January and December (UV index 2).