September weather forecast
Thomas, OK

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Thomas, Oklahoma, with an average temperature fluctuating between 84.6°F (29.2°C) and 65.8°F (18.8°C).

Temperature

September's arrival correlates with a reduction in the average high-temperature, down from a tropical 93.7°F (34.3°C) in August to a moderately hot 84.6°F (29.2°C). Thomas records a steady low-temperature average of 65.8°F (18.8°C) during September.

Heat index

The heat index value during September is estimated at a hot 89.6°F (32°C). Fatigue might occur with continuous exposure and activity, potentially causing heat cramps.
Note that heat index values are valued for light wind and location in the shade. Direct sunlight exposure may result in a rise of the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', gauges the sensation of temperature factoring in the air's moisture content. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are particularly meaningful for babies and toddlers. Young ones generally face higher dangers than adults since they sweat less. Along with their large skin surface area compared totheir small bodies and increased heat production from their activities, the risks are heightened.

Humidity

In September, the average relative humidity is 61%.

Rainfall

In Thomas, in September, it is raining for 12.1 days, with typically 2.13" (54mm) of accumulated precipitation. Throughout the year, there are 106 rainfall days, and 19.96" (507mm) of precipitation is accumulated.

Snowfall

In Thomas, snow does not fall in May through September.

Daylight

In Thomas, the average length of the day in September is 12h and 23min.
On the first day of September, sunrise is at 7:07 am and sunset at 8:01 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 7:19 pm CDT.

Sunshine

In September, the average sunshine is 8.9h.

UV index

In Thomas, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In September, the maximum UV index of 5 transforms into these recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Updated: Aug 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is it in September?

The high-temperature, in September, in Thomas, records 84.6°F (29.2°C), while the low-temperature is 65.8°F (18.8°C). In September, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is estimated at 89.6°F (32°C).

What is the average humidity in September in Thomas?

In Thomas, the average relative humidity in September is 61%.

How many days does it rain in September?

In Thomas, in September, during 12.1 rainfall days, 2.13" (54mm) of precipitation is typically accumulated.

When it does not snow?

May through September are months without snowfall.

Does it snow in September?

In Thomas, in September, it doesn't snow. In October, it regularly snows.

What is the average length of the day in September?

The average day length in September in Thomas is 12h and 23min.

When are sunrise and sunset in September?

On the first day of September, sunrise is at 7:07 am and sunset at 8:01 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 7:19 pm CDT.

How long on average sun shines in September?

In September, the average sunshine duration is 8.9h.

How high is the UV index in September?

In Thomas, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate health threat 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
Thomas, OK

Average temperature in September - Thomas, OK
  • Average high temperature in September: 84.6°F

The warmest month (with the highest average high temperature) is July (94.6°F).
The month with the lowest average high temperature is January (48.7°F).

  • Average low temperature in September: 65.8°F

The month with the highest average low temperature is July (73.9°F).
The coldest month (with the lowest average low temperature) is January (30.6°F).

Average pressure in September
Thomas, OK

Average pressure in September - Thomas, 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 (29.86"Hg).

Average wind speed in September
Thomas, OK

Average wind speed in September - Thomas, OK
  • Average wind speed in September: 9.6mph

The windiest month (with the highest average wind speed) is April (12.8mph).
The calmest month (with the lowest average wind speed) is August (9.1mph).

Average humidity in September
Thomas, OK

Average humidity in September - Thomas, OK
  • Average humidity in September: 61%

The month with the highest relative humidity is May (66%).
The month with the lowest relative humidity is August (54%).

Average rainfall in September
Thomas, OK

Average rainfall in September - Thomas, OK
  • Average rainfall in September: 2.13"

The wettest month (with the highest rainfall) is May (3.98").
The driest months (with the least rainfall) are January, February and December (0.83").

Average rainfall days in September
Thomas, OK

Average rainfall days in September - Thomas, OK
  • Average rainfall days in September: 12.1 days

The month with the highest number of rainy days is May (14.2 days).
The month with the least rainy days is January (3.8 days).

Average snowfall in September
Thomas, OK

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

The month with the highest snowfall is January (1.57").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in September
Thomas, OK

Average snowfall days in September - Thomas, 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 May, June, July, August and September (0 days).

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

Average daylight in September / Average sunshine in September - Thomas, 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 July (Average sunshine: 11h and 24min).
The month with the least sunshine is December (Average sunshine: 6h and 24min).

Average sunshine days in September
Thomas, OK

Average sunshine days in September - Thomas, OK
  • Average sunshine days in September: 16.3 days

The month with the most sunshine days is January (25.2 days).
The month with the least sunshine days is May (14 days).

Average UV index in September
Thomas, OK

Average UV index in September - Thomas, 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
Thomas, OK

Average cloud cover in September - Thomas, OK
  • Average cloud cover in September: 25

The month with the most cloud cover is April (Cloud cover 34).
The month with the least cloud cover is August (Cloud cover 18).

Average visibility in September
Thomas, OK

Average visibility in September - Thomas, 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).

Thomas, Oklahoma, USA

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