September weather forecast
Rattan, OK

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Weather in September

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

Temperature

As Rattan enters September, the average high-temperature subtly lowers from the 92.8°F (33.8°C) of August to a still tropical 86.4°F (30.2°C). September nights are marked by an average temperature drop to a refreshing 65.5°F (18.6°C).

Heat index

In September, the heat index is appraised at a torrid 95°F (35°C). Implement enhanced safety actions, heat cramps and heat exhaustion could occur. Sustained activity might result in heatstroke.
In reference to the heat index, it's for places in shade and with a slight wind. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'felt air temperature' or 'feels like', integrates the air's temperature and its humidity to showcase the felt temperature by people. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of physical exertion. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.
The body's self-cooling mechanism is rooted in perspiration, where evaporating sweat cools down excessive warmth. Excessive relative humidity disturbs the body's typical cooling process by reducing evaporation, leading to a decrease in body cooling rate and an increase in the sensation of warmth. When heat surpasses the body's release mechanisms, dehydration and overheating risks become pronounced.

Humidity

The average relative humidity in September is 69%.

Rainfall

In Rattan, in September, it is raining for 12.8 days, with typically 2.91" (74mm) of accumulated precipitation. In Rattan, during the entire year, the rain falls for 149.7 days and collects up to 37.6" (955mm) of precipitation.

Snowfall

April through October are months without snowfall.

Daylight

The average length of the day in September in Rattan is 12h and 22min.
On the first day of the month, sunrise is at 6:55 am and sunset at 7:47 pm. On the last day of September, sunrise is at 7:15 am and sunset at 7:06 pm CDT.

Sunshine

In September, the average sunshine is 8.9h.

UV index

In Rattan, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for the average person.
Note: The maximum UV index, 6 during September, leads to the following recommendations:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.

Frequently asked questions

How hot is it in September?

The high-temperature in Rattan during September is 86.4°F (30.2°C) and the low-temperature is 65.5°F (18.6°C). In September, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines relative humidity and air temperature, is appraised at 95°F (35°C).

What is the average humidity in September?

The average relative humidity in September is 69%.

How many days does it rain in September?

In Rattan, during September, the rain falls for 12.8 days and regularly aggregates up to 2.91" (74mm) of precipitation.

When it does not snow?

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

What is the average length of the day in September?

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

What time are sunrise and sunset in September in Rattan?

In September, on the first day of the month, sunrise is at 6:55 am and sunset at 7:47 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 7:06 pm CDT.

How many hours of sunshine does Rattan have in September?

The average sunshine duration in September in Rattan is 8.9h.

How high is the UV index in September?

The average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health risk from unsafe 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
Rattan, OK

Average temperature in September - Rattan, 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
Rattan, OK

Average pressure in September - Rattan, 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
Rattan, OK

Average wind speed in September - Rattan, 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
Rattan, OK

Average humidity in September - Rattan, 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
Rattan, OK

Average rainfall in September - Rattan, 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
Rattan, OK

Average rainfall days in September - Rattan, 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
Rattan, OK

Average snowfall in September - Rattan, 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
Rattan, OK

Average snowfall days in September - Rattan, 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
Rattan, OK

Average daylight in September / Average sunshine in September - Rattan, 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
Rattan, OK

Average sunshine days in September - Rattan, 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
Rattan, OK

Average UV index in September - Rattan, 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
Rattan, OK

Average cloud cover in September - Rattan, 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
Rattan, OK

Average visibility in September - Rattan, 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).

Rattan, Oklahoma, USA

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