September weather forecast
Dela, OK

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Weather in September

The first month of the autumn, September, is still a tropical month in Dela, Oklahoma, with temperature in the range of an average high of 86.4°F (30.2°C) and an average low of 65.5°F (18.6°C).

Temperature

Dela in September experiences a gentle temperature dip, with average high-temperatures reducing from 92.8°F (33.8°C) in August to a still hot 86.4°F (30.2°C). The average low-temperature, in September, is an enjoyable 65.5°F (18.6°C).

Heat index

During September, the heat index is computed to be a very hot 95°F (35°C). Heightened precautions are necessary, heat cramps and heat exhaustion are potential risks. Continuous activity could lead to heatstroke.
Heat index evaluations are typically in the context of light winds and shaded environments. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'apparent temperature' or 'feels like', gives a temperature feeling by integrating air temperature and humidity. 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. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.
Sweat evaporation, driven by perspiration, is the method the human body uses to rid itself of excessive warmth. In circumstances of high air temperature and humidity (high heat index), the body's perspiration is restricted, heightening the feeling of warmth. Accumulating more heat than the body can dissipate leads to an uptick in body temperature, with potential heat stress consequences.

Humidity

In Dela, the average relative humidity in September is 69%.

Rainfall

In Dela, in September, it is raining for 12.8 days, with typically 2.91" (74mm) of accumulated precipitation. Throughout the year, there are 149.7 rainfall days, and 37.6" (955mm) of precipitation is accumulated.

Snowfall

In Dela, snow does not fall in April through October.

Daylight

In September, the average length of the day is 12h and 22min.
On the first day of the month, sunrise is at 6:56 am and sunset at 7:47 pm. On the last day of September, sunrise is at 7:16 am and sunset at 7:07 pm CDT.

Sunshine

The average sunshine in September is 8.9h.

UV index

In September, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for average individuals.
Note: The average daily UV index of 6 in September transforms into the following instructions:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.

Frequently asked questions

How hot is September?

During September, Dela experiences an average high-temperature of 86.4°F (30.2°C) and a low-temperature of 65.5°F (18.6°C). In September, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines air temperature and relative humidity, is computed to be 95°F (35°C).

What is the average humidity in September?

In September, the average relative humidity is 69%.

How much does it rain in Dela in September?

In September, in Dela, the rain falls for 12.8 days. Throughout September, 2.91" (74mm) of precipitation is accumulated.

When it does not snow?

April through October are months without snowfall.

How many hours of daylight does Dela have in September?

The average day length in September is 12h and 22min.

When is the sunrise / sunset in September?

On the first day of September, sunrise is at 6:56 am and sunset at 7:47 pm. On the last day of the month, sunrise is at 7:16 am and sunset at 7:07 pm CDT.

How long on average sun shines in September?

In September, the average sunshine duration is 8.9h.

How high is the UV index in September?

In Dela, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health risk 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
Dela, OK

Average temperature in September - Dela, OK
  • Average high temperature in September: 86.4°F

The warmest month (with the highest average high temperature) is August (92.8°F).
The month with the lowest average high temperature is January (50.5°F).

  • Average low temperature in September: 65.5°F

The month with the highest average low temperature is July (72.1°F).
The coldest month (with the lowest average low temperature) is January (34.7°F).

Average pressure in September
Dela, OK

Average pressure in September - Dela, OK
  • Average pressure in September: 29.98"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in September
Dela, OK

Average wind speed in September - Dela, OK
  • Average wind speed in September: 6.2mph

The windiest month (with the highest average wind speed) is April (8.9mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).

Average humidity in September
Dela, OK

Average humidity in September - Dela, OK
  • Average humidity in September: 69%

The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is August (66%).

Average rainfall in September
Dela, OK

Average rainfall in September - Dela, OK
  • Average rainfall in September: 2.91"

The wettest month (with the highest rainfall) is May (5.12").
The driest month (with the least rainfall) is January (1.97").

Average rainfall days in September
Dela, OK

Average rainfall days in September - Dela, OK
  • Average rainfall days in September: 12.8 days

The month with the highest number of rainy days is May (15.6 days).
The month with the least rainy days is January (8.5 days).

Average snowfall in September
Dela, OK

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

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

Average snowfall days in September
Dela, OK

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

The month with the highest number of snowfall days is February (1.8 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
Dela, OK

Average daylight in September / Average sunshine in September - Dela, OK
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in September: 8h and 5min

The month with the most sunshine is August (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).

Average sunshine days in September
Dela, OK

Average sunshine days in September - Dela, OK
  • Average sunshine days in September: 14.5 days

The month with the most sunshine days is January (19.9 days).
The month with the least sunshine days is May (12.9 days).

Average UV index in September
Dela, OK

Average UV index in September - Dela, OK
  • Average UV index in September: 6

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
Dela, OK

Average cloud cover in September - Dela, OK
  • Average cloud cover in September: 28

The month with the most cloud cover is February (Cloud cover 44).
The month with the least cloud cover is August (Cloud cover 22).

Average visibility in September
Dela, OK

Average visibility in September - Dela, 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).

Dela, Oklahoma, USA

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