September weather forecast
El Reno, OK

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Weather in September

September marks the onset of autumn in El Reno, drawing a clear departure from August's intense summer. This period sees temperatures gradually reducing, signaling the approach of fall. With an average rainfall of 2.52" (64mm), September conveys a balance between the sweltering summer months and the cooler autumn days. September's weather provides a comfortable window for outdoor excursions, benefiting from manageable humidity levels of around 64%. The transition from September's milder conditions to October's more crisp temperatures preludes the changing leaves of autumn.

Temperature

The arrival of September corresponds with a light shift in temperature, down from a tropical 93°F (33.9°C) in August to a warm 84.6°F (29.2°C). In September, El Reno experiences an average nighttime temperature of 65.8°F (18.8°C).

Heat index

During September, the heat index is appraised at a hot 89.6°F (32°C). If one sustains activity during exposure, it could lead to a sense of fatigue, with a chance of heat cramps.
In reference to the heat index, it's for places in shade and with a slight wind. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.

Humidity

In September, the average relative humidity in El Reno is 64%.

Rainfall

In El Reno, in September, during 11.8 rainfall days, 2.52" (64mm) of precipitation is typically accumulated. Throughout the year, in El Reno, Oklahoma, there are 105.3 rainfall days, and 19.69" (500mm) of precipitation is accumulated.

Snowfall

May through October are months without snowfall.

Daylight

The average length of the day in September is 12h and 23min.
On the first day of September in El Reno, sunrise is at 7:04 am and sunset at 7:58 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 7:16 pm CDT.

Sunshine

In El Reno, the average sunshine in September is 8.6h.

UV index

In September, the average daily maximum UV index in El Reno is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the average person.
Note: The daily high UV index of 5 in September translates into this advice:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
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Frequently asked questions

Is it hot in El Reno during September?

The average high-temperature and low-temperature during September are 84.6°F (29.2°C) and 65.8°F (18.8°C) respectively. In September, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is appraised at 89.6°F (32°C).

What is the average humidity in September in El Reno?

In September, the average relative humidity in El Reno, Oklahoma, is 64%.

How many days does it rain in September in El Reno?

In El Reno, Oklahoma, during September, the rain falls for 11.8 days and regularly aggregates up to 2.52" (64mm) of precipitation.

When it does not snow in El Reno?

May through October are months without snowfall in El Reno, Oklahoma.

What is the average length of the day in September in El Reno?

The average day length in September is 12h and 23min.

When is the sunrise / sunset in September in El Reno?

In September, on the first day of the month, sunrise is at 7:04 am and sunset at 7:58 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 7:16 pm CDT.

How many hours of sunshine does El Reno have in September?

In September, the average sunshine duration in El Reno, Oklahoma, is 8.6h.

How high is the UV index in September in El Reno?

In El Reno, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate vulnerability from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
El Reno, OK

Average temperature in September - El Reno, OK
  • Average high temperature in September: 84.6°F

The warmest month (with the highest average high temperature) is July (94.5°F).
The month with the lowest average high temperature is January (48.6°F).

  • Average low temperature in September: 65.8°F

The month with the highest average low temperature is July (73.6°F).
The coldest month (with the lowest average low temperature) is January (31.5°F).

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Average pressure in September
El Reno, OK

Average pressure in September - El Reno, 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).

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Average wind speed in September
El Reno, OK

Average wind speed in September - El Reno, OK
  • Average wind speed in September: 9.3mph

The windiest month (with the highest average wind speed) is April (12.6mph).
The calmest month (with the lowest average wind speed) is August (8.9mph).

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Average humidity in September
El Reno, OK

Average humidity in September - El Reno, OK
  • Average humidity in September: 64%

The month with the highest relative humidity is May (71%).
The month with the lowest relative humidity is August (57%).

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Average rainfall in September
El Reno, OK

Average rainfall in September - El Reno, OK
  • Average rainfall in September: 2.52"

The wettest month (with the highest rainfall) is May (3.35").
The driest month (with the least rainfall) is December (0.59").

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Average rainfall days in September
El Reno, OK

Average rainfall days in September - El Reno, OK
  • Average rainfall days in September: 11.8 days

The month with the highest number of rainy days is May (13.1 days).
The month with the least rainy days is January (4.1 days).

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Average snowfall in September
El Reno, OK

Average snowfall in September - El Reno, OK
  • Average snowfall in September: 0"

The months with the highest snowfall are January and February (0.98").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in September
El Reno, OK

Average snowfall days in September - El Reno, 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, September and October (0 days).

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Average daylight in September /
Average sunshine in September
El Reno, OK

Average daylight in September / Average sunshine in September - El Reno, 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 12min).
The month with the least sunshine is December (Average sunshine: 6h and 6min).

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Average sunshine days in September
El Reno, OK

Average sunshine days in September - El Reno, OK
  • Average sunshine days in September: 15.7 days

The month with the most sunshine days is January (25.3 days).
The month with the least sunshine days is September (15.7 days).

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Average UV index in September
El Reno, OK

Average UV index in September - El Reno, 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).

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Average cloud cover in September
El Reno, OK

Average cloud cover in September - El Reno, 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).

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Average visibility in September
El Reno, OK

Average visibility in September - El Reno, 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).

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El Reno, Oklahoma, USA

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