September weather forecast
Denny, OK

Share

Weather in September

September, the first month of the autumn in Denny, is still a warm month, with an average temperature fluctuating between 66°F (18.9°C) and 84.6°F (29.2°C).

Temperature

During the shift to September, Denny records a mild decrease in average high-temperature, moving from a hot 93.4°F (34.1°C) in August to a moderately hot 84.6°F (29.2°C). During September, the average low-temperature is a comfortable 66°F (18.9°C).

Heat index

The heat index value during September is estimated at a hot 91.4°F (33°C). Special measures are necessary to avoid heat cramps and heat exhaustion. Persistent activity could result in heatstroke.
In the scope of the heat index, its values resonate with shade and light wind conditions. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', shows a temperature sensation when both heat and moisture conditions are combined. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.

Humidity

The average relative humidity in September is 68%.

Rainfall

In September, the rain falls for 13.2 days. Throughout September, 2.83" (72mm) of precipitation is accumulated. Throughout the year, there are 129 rainfall days, and 27.91" (709mm) of precipitation is accumulated.

Snowfall

In Denny, snow does not fall in May through October.

Daylight

In Denny, the average length of the day in September is 12h and 23min.
On the first day of September, sunrise is at 7:01 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 7:12 pm CDT.

Sunshine

In Denny, the average sunshine in September is 8.2h.

UV index

The average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: An average maximum UV index of 5 in September leads to these recommendations:
Exercise care. People with light skin might get burns in fewer than 30 minutes. When the Sun is at its strongest around midday, find shade and limit exposure. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.

Frequently asked questions

How hot is September?

The average high-temperature, in September, in Denny, is 84.6°F (29.2°C), while the average low-temperature is 66°F (18.9°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which combines relative humidity and air temperature, in September is estimated at 91.4°F (33°C).

What is the average humidity in September?

The average relative humidity in September is 68%.

How much does it rain in September?

In September, the rain falls for 13.2 days. Throughout September, 2.83" (72mm) of precipitation is accumulated.

When it does not snow?

In Denny, snow does not fall in May through October.

What is the average length of the day in September?

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

When is the sunrise / sunset in September?

In September, on the first day of the month, sunrise is at 7:01 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 7:12 pm CDT.

How many hours of sunshine does Denny have in September?

In September, the average sunshine duration in Denny is 8.2h.

What is the UV index intensity in September?

In Denny, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium hazard to health 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
Denny, OK

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

The warmest month (with the highest average high temperature) is August (93.4°F).
The month with the lowest average high temperature is January (50.2°F).

  • Average low temperature in September: 66°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 (33.4°F).

Average pressure in September
Denny, OK

Average pressure in September - Denny, 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 (29.89"Hg).

Average wind speed in September
Denny, OK

Average wind speed in September - Denny, OK
  • Average wind speed in September: 7.7mph

The windiest months (with the highest average wind speed) are March and April (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.6mph).

Average humidity in September
Denny, OK

Average humidity in September - Denny, OK
  • Average humidity in September: 68%

The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is August (61%).

Average rainfall in September
Denny, OK

Average rainfall in September - Denny, OK
  • Average rainfall in September: 2.83"

The wettest month (with the highest rainfall) is May (4.37").
The driest month (with the least rainfall) is January (1.34").

Average rainfall days in September
Denny, OK

Average rainfall days in September - Denny, OK
  • Average rainfall days in September: 13.2 days

The month with the highest number of rainy days is May (14.7 days).
The month with the least rainy days is January (6.3 days).

Average snowfall in September
Denny, OK

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

The month with the highest snowfall is February (1.3").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in September
Denny, OK

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

The month with the highest number of snowfall days is February (2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in September /
Average sunshine in September
Denny, OK

Average daylight in September / Average sunshine in September - Denny, 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 1min

The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).

Average sunshine days in September
Denny, OK

Average sunshine days in September - Denny, OK
  • Average sunshine days in September: 15.2 days

The month with the most sunshine days is January (22.9 days).
The month with the least sunshine days is May (14.3 days).

Average UV index in September
Denny, OK

Average UV index in September - Denny, 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).

Average cloud cover in September
Denny, OK

Average cloud cover in September - Denny, OK
  • Average cloud cover in September: 30

The month with the most cloud cover is March (Cloud cover 41).
The month with the least cloud cover is August (Cloud cover 21).

Average visibility in September
Denny, OK

Average visibility in September - Denny, 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).

Denny, Oklahoma, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location