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

September weather forecast and climate
Oklahoma City, OK

The State Capitol Building, Oklahoma City, Oklahoma, with flags and a statue outside
The State Capitol Building, Oklahoma City, Oklahoma, with flags and a statue outside
September has relatively moderate heat and humidity. Oklahoma experiences a decrease in the mean temperature. The temperature stands at a warm 84°F (28.9°C) during the day and a comfortable 63°F (17.2°C) during the night.
The cold weather is approaching. The individuals planning to visit Oklahoma City are advised to bring clothes that will keep them warm through the cold season. The hours of day and night balance at 12 hours each.
For lovers of balloon rides, this is the ideal period as the number of balloon festivals during September makes worthwhile the visit to Oklahoma City.

What is the temperature in September in Oklahoma City?

In September, the average high-temperature is 84.7°F (29.3°C), and the average low-temperature is 63.1°F (17.3°C). The average heat index (a.k.a. 'real feel', 'feels like'), that combines relative humidity and air temperature, in September is appraised at 91°F (32.8°C).

What is the average humidity in September in Oklahoma City?

In September, the average relative humidity is 67.1%.

How much does it rain in Oklahoma City in September?

In Oklahoma City, in September, it is raining for 7.2 days, with typically 4.1" (103.1mm) of accumulated precipitation.

When it does not snow in Oklahoma City?

In Oklahoma City, Oklahoma, snow does not fall in April through October.

What is the average length of the day in September in Oklahoma City?

The average length of the day in September in Oklahoma City, Oklahoma, is 12.4h.

How long on average sun shines in September in Oklahoma City?

In September, the average sunshine in Oklahoma City is 8.8h.

What is the UV index intensity in September in Oklahoma City?

The average daily maximum UV index in September in Oklahoma City is 8. A UV Index value of 8 to 10 symbolizes a very high health threat from unsafe exposure to the Sun's UV rays.
Average temperature in September - Oklahoma City, OK
  • Average high temperature in September: 84.7°F

The warmest month (with the highest average high temperature) is July (93.9°F).
The month with the lowest average high temperature is January (49.7°F).

  • Average low temperature in September: 63.2°F

The month with the highest average low temperature is July (72.2°F).
The coldest month (with the lowest average low temperature) is January (28.8°F).

Average humidity in September - Oklahoma City, OK
  • Average humidity in September: 67.1%

The month with the highest relative humidity is December (67.8%).
The month with the lowest relative humidity is July (60.9%).

Average rainfall in September - Oklahoma City, OK
  • Average rainfall in September: 4.1"

The wettest month (with the highest rainfall) is June (4.9").
The driest month (with the lowest rainfall) is January (1.4").

Average rainfall days in September - Oklahoma City, OK
  • Average rainfall days in September: 7.2 days

The month with the highest number of rainy days is May (9.8 days).
The month with the lowest number of rainy days is January (5.1 days).

Average snowfall in September - Oklahoma City, OK
  • Average snowfall in September: 0"

The month with the highest snowfall is January (2.8").
Months with the lowest snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in September - Oklahoma City, OK
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is December (1.7 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 - Oklahoma City, OK
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.5h).
The month with shortest days is December (Average daylight: 9.8h).

  • Average sunshine in September: 8.8h

The month with most sunshine is July (Average sunshine: 11.5h).
The month with least sunshine is December (Average sunshine: 5.8h).

Average UV index in September - Oklahoma City, OK
  • Average UV index in September: 8

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