September weather forecast
Tahlequah, OK

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Weather in September

September announces the arrival of autumn, with a drop in temperatures and a change in the colour palette of the surroundings. The intensity of the summer heat eases off as the average peak temperature drops to 82.9°F (28.3°C). A refreshing climate, characterized by cooler mornings and evenings, provides a perfect backdrop for embracing the outdoors. As trees start to change color, the landscape transforms into a canvas filled with shades of golds, oranges, and reds. Completing the scene, clearer skies mark the progression towards the cooler months.

Temperature

September marks a gentle change in average high-temperature in Tahlequah, declining from August's tropical 90°F (32.2°C) to a warm 82.9°F (28.3°C). In September, Tahlequah encounters an average low-temperature of 62.8°F (17.1°C) during the night.

Heat index

For most parts of September, the heat index is calculated to be a tropical 89.6°F (32°C). Prolonged exposure and physical activity might induce exhaustion, potentially causing heat cramps.
Realize that the values for the heat index are set for shaded places and light winds. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is found by incorporating humidity levels into the air temperature measurement. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.

Humidity

The average relative humidity in September is 72%.

Rainfall

In Tahlequah, Oklahoma, in September, during 11.9 rainfall days, 2.83" (72mm) of precipitation is typically accumulated. In Tahlequah, during the entire year, the rain falls for 139.7 days and collects up to 32.52" (826mm) of precipitation.

Snowfall

June 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, sunrise is at 6:52 am and sunset at 7:46 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 7:04 pm CDT.

Sunshine

In September, the average sunshine is 9.2h.

UV index

In Tahlequah, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: A typical high UV index of 5 in September suggests the following recommendations:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
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Frequently asked questions

Is it hot in Tahlequah during September?

September temperatures in Tahlequah, Oklahoma, vary between a high-temperature of 82.9°F (28.3°C) and a low-temperature of 62.8°F (17.1°C). In September, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is calculated to be 89.6°F (32°C).

What is the average humidity in September in Tahlequah?

The average relative humidity in September is 72%.

How many days does it rain in September in Tahlequah?

In Tahlequah, in September, it is raining for 11.9 days, with typically 2.83" (72mm) of accumulated precipitation.

When it does not snow in Tahlequah?

In Tahlequah, Oklahoma, snow does not fall in June through October.

How many hours of daylight does Tahlequah have in September?

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

What time are sunrise and sunset in September in Tahlequah?

In September, on the first day of the month, sunrise is at 6:52 am and sunset at 7:46 pm. On the last day of the month, in Tahlequah, sunrise is at 7:14 am and sunset at 7:04 pm CDT.

How many hours of sunshine does Tahlequah have in September?

The average sunshine duration in September in Tahlequah is 9.2h.

What is the UV index intensity in September in Tahlequah?

The average daily maximum UV index in September in Tahlequah is 5. A UV Index of 3 to 5 symbolizes 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
Tahlequah, OK

Average temperature in September - Tahlequah, OK
  • Average high temperature in September: 82.9°F

The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is January (45.9°F).

  • Average low temperature in September: 62.8°F

The month with the highest average low temperature is July (70.9°F).
The coldest month (with the lowest average low temperature) is January (30.4°F).

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Average pressure in September
Tahlequah, OK

Average pressure in September - Tahlequah, OK
  • Average pressure in September: 30.01"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in September
Tahlequah, OK

Average wind speed in September - Tahlequah, OK
  • Average wind speed in September: 6.9mph

The windiest months (with the highest average wind speed) are March and April (9.9mph).
The calmest month (with the lowest average wind speed) is July (6.3mph).

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Average humidity in September
Tahlequah, OK

Average humidity in September - Tahlequah, OK
  • Average humidity in September: 72%

The month with the highest relative humidity is May (79%).
The months with the lowest relative humidity are August and October (70%).

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Average rainfall in September
Tahlequah, OK

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

The wettest month (with the highest rainfall) is May (4.21").
The driest month (with the least rainfall) is February (1.65").

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Average rainfall days in September
Tahlequah, OK

Average rainfall days in September - Tahlequah, OK
  • Average rainfall days in September: 11.9 days

The month with the highest number of rainy days is May (15.5 days).
The month with the least rainy days is January (7.4 days).

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Average snowfall in September
Tahlequah, OK

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

The month with the highest snowfall is February (1.06").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in September
Tahlequah, OK

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

The month with the highest number of snowfall days is February (2.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

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

The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 48min).

  • Average sunshine in September: 9h and 1min

The month with the most sunshine is August (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).

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Average sunshine days in September
Tahlequah, OK

Average sunshine days in September - Tahlequah, OK
  • Average sunshine days in September: 15.9 days

The month with the most sunshine days is January (20.9 days).
The month with the least sunshine days is May (13.2 days).

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Average UV index in September
Tahlequah, OK

Average UV index in September - Tahlequah, OK
  • Average UV index in September: 5

The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are February and December (UV index 2).

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Average cloud cover in September
Tahlequah, OK

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

The months with the most cloud cover are February and March (Cloud cover 44).
The month with the least cloud cover is August (Cloud cover 23).

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Average visibility in September
Tahlequah, OK

Average visibility in September - Tahlequah, 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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Tahlequah, Oklahoma, USA

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