September weather forecast
Chickasha, OK

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Weather in September

The arrival of September greets Chickasha with the onset of fall. Maximum temperatures initiate a retreat from their peak, dropping to 84.9°F (29.4°C), a significant decrease from the preceding summer months. With a notable drop in humidity from 72% in May to 64%, the weather becomes decidedly more comfortable. The changing season heralds October, bringing a refreshing transformation to Chickasha's climate. September signifies a calming shift from the heat-intense summer months to cooler autumn conditions.

Temperature

During the transition into September, Chickasha observes a decrease in the average high-temperature, falling from a tropical 94.1°F (34.5°C) in August to a warm 84.9°F (29.4°C). In the month of September, Chickasha experiences an average low-temperature of 65.8°F (18.8°C).

Heat index

September's average heat index is estimated at a tropical 89.6°F (32°C). Enduring exposure and unrelenting activity might cause a state of weariness, potentially leading to heat cramps.
From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a metric representing the sensation of warmth when air temperature and moisture come together. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.

Humidity

In September, the average relative humidity is 64%.

Rainfall

In September, in Chickasha, the rain falls for 8.9 days. Throughout September, 1.18" (30mm) of precipitation is accumulated. In Chickasha, during the entire year, the rain falls for 85.1 days and collects up to 10.79" (274mm) of precipitation.

Snowfall

In Chickasha, snow does not fall in May through November.

Daylight

The average length of the day in September is 12h and 23min.
On the first day of September, sunrise is at 7:04 am and sunset at 7:58 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 7:16 pm CDT.

Sunshine

In September, the average sunshine is 8.6h.

UV index

In September, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for average individuals.
Note: In September, a daily UV index of 5 turns into the following recommendations:
Exercise caution. Those with pale skin may experience burns in less than half an hour. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.

Frequently asked questions

How hot is September?

The average high-temperature and low-temperature during September are 84.9°F (29.4°C) and 65.8°F (18.8°C) respectively. In September, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which combines relative humidity and air temperature, is estimated at 89.6°F (32°C).

What is the average humidity in September?

The average relative humidity in September is 64%.

How much does it rain in September?

In Chickasha, in September, during 8.9 rainfall days, 1.18" (30mm) of precipitation is typically accumulated.

When it does not snow?

In Chickasha, snow does not fall in May through November.

How many hours of daylight does Chickasha have in September?

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

When is the sunrise / sunset in September?

In September, on the first day of the month, sunrise is at 7:04 am and sunset at 7:58 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 7:16 pm CDT.

How many hours of sunshine does Chickasha have in September?

In Chickasha, the average sunshine duration in September is 8.6h.

What is the UV index reading in September?

In Chickasha, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate health threat 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
Chickasha, OK

Average temperature in September - Chickasha, OK
  • Average high temperature in September: 84.9°F

The warmest months (with the highest average high temperature) are July and August (94.1°F).
The month with the lowest average high temperature is January (49.8°F).

  • Average low temperature in September: 65.8°F

The month with the highest average low temperature is July (73.6°F).
The coldest month (with the lowest average low temperature) is January (32.4°F).

Average pressure in September
Chickasha, OK

Average pressure in September - Chickasha, 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 (29.87"Hg).

Average wind speed in September
Chickasha, OK

Average wind speed in September - Chickasha, OK
  • Average wind speed in September: 8.7mph

The windiest month (with the highest average wind speed) is April (12.2mph).
The calmest month (with the lowest average wind speed) is August (8.5mph).

Average humidity in September
Chickasha, OK

Average humidity in September - Chickasha, OK
  • Average humidity in September: 64%

The month with the highest relative humidity is May (72%).
The month with the lowest relative humidity is August (57%).

Average rainfall in September
Chickasha, OK

Average rainfall in September - Chickasha, OK
  • Average rainfall in September: 1.18"

The wettest month (with the highest rainfall) is May (2.05").
The driest month (with the least rainfall) is February (0.31").

Average rainfall days in September
Chickasha, OK

Average rainfall days in September - Chickasha, OK
  • Average rainfall days in September: 8.9 days

The month with the highest number of rainy days is May (12.2 days).
The month with the least rainy days is January (3.3 days).

Average snowfall in September
Chickasha, OK

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

The month with the highest snowfall is February (0.39").
The months with the least snowfall are May, June, July, August, September, October and November (0").

Average snowfall days in September
Chickasha, OK

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

The month with the highest number of snowfall days is February (1.3 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
Chickasha, OK

Average daylight in September / Average sunshine in September - Chickasha, 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 4min

The month with the most sunshine is July (Average sunshine: 11h and 18min).
The month with the least sunshine is December (Average sunshine: 6h and 6min).

Average sunshine days in September
Chickasha, OK

Average sunshine days in September - Chickasha, OK
  • Average sunshine days in September: 18.7 days

The month with the most sunshine days is January (26.7 days).
The month with the least sunshine days is May (15.8 days).

Average UV index in September
Chickasha, OK

Average UV index in September - Chickasha, 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
Chickasha, OK

Average cloud cover in September - Chickasha, OK
  • Average cloud cover in September: 27

The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is August (Cloud cover 18).

Average visibility in September
Chickasha, OK

Average visibility in September - Chickasha, 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).

Chickasha, Oklahoma, USA

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