September weather forecast
Old Retrop, OK

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Weather in September

September, the first month of the autumn in Old Retrop, is still a warm month, with an average temperature fluctuating between 67.1°F (19.5°C) and 85.6°F (29.8°C).

Temperature

With September's arrival, Old Retrop sees a decrease in average high-temperatures, moving from a torrid 95.2°F (35.1°C) in August to a moderately hot 85.6°F (29.8°C). An average low-temperature of 67.1°F (19.5°C) is recorded in the month of September in Old Retrop.

Heat index

The heat index in September is estimated at a tropical 89.6°F (32°C). With prolonged exposure and constant activity, one might feel exhausted and experience heat cramps.
Be informed that the heat index values are oriented around shady conditions and gentle breezes. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Awareness of direct sun exposure is crucial as it has the potential to heighten the weather's effects, pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.

Humidity

The average relative humidity in September in Old Retrop, Oklahoma, is 58%.

Rainfall

In Old Retrop, Oklahoma, in September, during 10.5 rainfall days, 1.73" (44mm) of precipitation is typically accumulated. In Old Retrop, during the entire year, the rain falls for 93.6 days and collects up to 18.27" (464mm) of precipitation.

Snowfall

In Old Retrop, snow does not fall in May through October.

Daylight

The average length of the day in September is 12h and 23min.
On the first day of the month, sunrise is at 7:10 am and sunset at 8:03 pm. On the last day of September, sunrise is at 7:31 am and sunset at 7:22 pm CDT.

Sunshine

The average sunshine in September is 8.9h.

UV index

The average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum UV index of 5 during September leads to these instructions:
Adopt protective measures - It is advised to guard against sun damage. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
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Frequently asked questions

Is it hot in Old Retrop during September?

In Old Retrop, 85.6°F (29.8°C) is the average high-temperature and 67.1°F (19.5°C) is the average low-temperature during September. The average heat index (a.k.a. 'feels like', 'felt air temperature'), which represents the influence of relative humidity on air temperature, in September is estimated at 89.6°F (32°C).

What is the average humidity in September in Old Retrop?

The average relative humidity in September in Old Retrop, Oklahoma, is 58%.

How many days does it rain in September in Old Retrop?

In Old Retrop, in September, during 10.5 rainfall days, 1.73" (44mm) of precipitation is typically accumulated.

When it does not snow in Old Retrop?

In Old Retrop, Oklahoma, snow does not fall in May through October.

How many hours of daylight does Old Retrop have in September?

In September, the average day length in Old Retrop is 12h and 23min.

When are sunrise and sunset in September in Old Retrop?

In September, on the first day of the month, sunrise is at 7:10 am and sunset at 8:03 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 7:22 pm CDT.

How long on average sun shines in September in Old Retrop?

The average sunshine duration in September is 8.9h.

What is the UV index reading in September in Old Retrop?

In Old Retrop, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium hazard to health from exposure to the Sun's 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
Old Retrop, OK

Average temperature in September - Old Retrop, OK
  • Average high temperature in September: 85.6°F

The warmest month (with the highest average high temperature) is July (96.1°F).
The month with the lowest average high temperature is December (50.9°F).

  • Average low temperature in September: 67.1°F

The month with the highest average low temperature is July (75°F).
The coldest month (with the lowest average low temperature) is January (32.5°F).

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Average pressure in September
Old Retrop, OK

Average pressure in September - Old Retrop, OK
  • Average pressure in September: 29.97"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).

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Average wind speed in September
Old Retrop, OK

Average wind speed in September - Old Retrop, OK
  • Average wind speed in September: 9.5mph

The windiest month (with the highest average wind speed) is April (12.7mph).
The calmest month (with the lowest average wind speed) is August (9.1mph).

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Average humidity in September
Old Retrop, OK

Average humidity in September - Old Retrop, OK
  • Average humidity in September: 58%

The months with the highest relative humidity are May and December (61%).
The months with the lowest relative humidity are July and August (50%).

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Average rainfall in September
Old Retrop, OK

Average rainfall in September - Old Retrop, OK
  • Average rainfall in September: 1.73"

The wettest month (with the highest rainfall) is May (2.91").
The driest month (with the least rainfall) is February (0.67").

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Average rainfall days in September
Old Retrop, OK

Average rainfall days in September - Old Retrop, OK
  • Average rainfall days in September: 10.5 days

The month with the highest number of rainy days is May (11.8 days).
The month with the least rainy days is January (2.5 days).

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Average snowfall in September
Old Retrop, OK

Average snowfall in September - Old Retrop, OK
  • Average snowfall in September: 0"

The month with the highest snowfall is January (1.46").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in September
Old Retrop, OK

Average snowfall days in September - Old Retrop, OK
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (2.4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in September /
Average sunshine in September
Old Retrop, OK

Average daylight in September / Average sunshine in September - Old Retrop, 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 5min

The month with the most sunshine is June (Average sunshine: 11h and 24min).
The month with the least sunshine is December (Average sunshine: 6h and 30min).

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Average sunshine days in September
Old Retrop, OK

Average sunshine days in September - Old Retrop, OK
  • Average sunshine days in September: 17.5 days

The month with the most sunshine days is January (26.3 days).
The month with the least sunshine days is August (16 days).

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Average UV index in September
Old Retrop, OK

Average UV index in September - Old Retrop, OK
  • Average UV index in September: 5

The months with the highest UV index are May, 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
Old Retrop, OK

Average cloud cover in September - Old Retrop, OK
  • Average cloud cover in September: 24

The months with the most cloud cover are March and April (Cloud cover 29).
The month with the least cloud cover is June (Cloud cover 17).

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Average visibility in September
Old Retrop, OK

Average visibility in September - Old Retrop, 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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Old Retrop, Oklahoma, USA

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