September weather forecast
Big Rocks, OK

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Weather in September

September, the first month of the autumn in Big Rocks, is still a hot month, 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

September indicates a minor shift in the average high-temperature, from August's tropical 92.8°F (33.8°C) to a still hot 86.4°F (30.2°C). Throughout the month of September, Big Rocks sees a steady low-temperature average of 65.5°F (18.6°C).

Heat index

The heat index in September is estimated at a sweltering 95°F (35°C). Adopt heightened preventive measures, heat exhaustion and heat cramps are probable. Persistent activity could lead to heatstroke.
Given the heat index, its values are aligned with shaded sites and gentle winds. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'feels like' or 'real feel', combines air temperature and relative humidity to represent a human perceived temperature equivalent. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.
When the body gets too warm, it perspires, leading to sweat evaporation which cools it down. During conditions of high air temperature and humidity (high heat index), the body's ability to perspire is inhibited, increasing the sensation of warmth. When the body's heat gain surpasses its removal capacity, body temperature starts to climb, leading to potential heat-related ailments.

Humidity

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

Rainfall

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

Snowfall

In Big Rocks, snow does not fall in April through October.

Daylight

The average length of the day in September in Big Rocks, Oklahoma, 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

In Big Rocks, the average sunshine in September is 8.9h.

UV index

The average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for average individuals.
Note: An average UV index of 6 in September transforms into this advice:
Refrain from overexposure. Fair-skinned individuals could burn in under 20 minutes. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
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Frequently asked questions

Is it hot in Big Rocks during September?

In September, the average high-temperature and low-temperature are 86.4°F (30.2°C) and 65.5°F (18.6°C) respectively. In September, the average heat index (a.k.a. 'feels like', 'real feel'), which combines air temperature and relative humidity, is estimated at 95°F (35°C).

What is the average humidity in September in Big Rocks?

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

How many days does it rain in September in Big Rocks?

In Big Rocks, Oklahoma, in September, it is raining for 12.8 days, with typically 2.91" (74mm) of accumulated precipitation.

When it does not snow in Big Rocks?

In Big Rocks, Oklahoma, snow does not fall in April through October.

What is the average length of the day in September in Big Rocks?

In Big Rocks, the average day length in September is 12h and 22min.

When is the sunrise / sunset in September in Big Rocks?

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

How long on average sun shines in September in Big Rocks?

The average sunshine duration in September in Big Rocks is 8.9h.

How high is the UV index in September in Big Rocks?

In Big Rocks, Oklahoma, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health risk from exposure to Sun's UV rays.
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
Big Rocks, OK

Average temperature in September - Big Rocks, 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).

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Average pressure in September
Big Rocks, OK

Average pressure in September - Big Rocks, 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).

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Average wind speed in September
Big Rocks, OK

Average wind speed in September - Big Rocks, 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).

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Average humidity in September
Big Rocks, OK

Average humidity in September - Big Rocks, 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%).

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Average rainfall in September
Big Rocks, OK

Average rainfall in September - Big Rocks, 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").

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Average rainfall days in September
Big Rocks, OK

Average rainfall days in September - Big Rocks, 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).

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Average snowfall in September
Big Rocks, OK

Average snowfall in September - Big Rocks, 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").

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Average snowfall days in September
Big Rocks, OK

Average snowfall days in September - Big Rocks, 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).

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Average daylight in September /
Average sunshine in September
Big Rocks, OK

Average daylight in September / Average sunshine in September - Big Rocks, 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).

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Average sunshine days in September
Big Rocks, OK

Average sunshine days in September - Big Rocks, 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).

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Average UV index in September
Big Rocks, OK

Average UV index in September - Big Rocks, 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).

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Average cloud cover in September
Big Rocks, OK

Average cloud cover in September - Big Rocks, 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).

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Average visibility in September
Big Rocks, OK

Average visibility in September - Big Rocks, 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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Big Rocks, Oklahoma, USA

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