September weather forecast
McClanahan, TX

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Weather in September

The first month of the autumn, September, is still a hot month in McClanahan, Texas, with an average temperature ranging between max 88.7°F (31.5°C) and min 70.7°F (21.5°C).

Temperature

During the shift to September, a minor reduction in average high-temperature is observed, shifting from a sweltering 96.4°F (35.8°C) in August to a hot 88.7°F (31.5°C). McClanahan in September experiences a low-temperature average of 70.7°F (21.5°C).

Heat index

In September, the average heat index is estimated at a very hot 100.4°F (38°C). Additional precautions are required to avert heat cramps and heat exhaustion. Persistent activity may culminate in heatstroke.
Note that heat index values are valued for light wind and location in the shade. Facing direct sunlight may hike up the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
The innate cooling system of the human body revolves around perspiration, with the evaporation of sweat being central to this process. Under high air temperature and high humidity (high heat index) conditions, the body's ability to perspire is compromised, increasing the sensation of heat. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.

Humidity

The average relative humidity in September is 66%.

Rainfall

In McClanahan, in September, it is raining for 12.3 days, with typically 1.1" (28mm) of accumulated precipitation. In McClanahan, during the entire year, the rain falls for 113.1 days and collects up to 14.17" (360mm) of precipitation.

Snowfall

In McClanahan, snow does not fall in January, March through December.

Daylight

In McClanahan, the average length of the day in September is 12h and 20min.
On the first day of September, sunrise is at 7:03 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 7:13 pm CDT.

Sunshine

The average sunshine in September is 8.6h.

UV index

The average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: During September, 6 as the daily maximum UV index converts into the following advice:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Updated: Jul 11, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in McClanahan in September?

In McClanahan, 88.7°F (31.5°C) is the average high-temperature and 70.7°F (21.5°C) is the average low-temperature during September. In September, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which represents the influence of relative humidity on air temperature, is estimated at 100.4°F (38°C).

What is the average humidity in September in McClanahan?

The average relative humidity in September is 66%.

How many days does it rain in September in McClanahan?

In McClanahan, Texas, in September, during 12.3 rainfall days, 1.1" (28mm) of precipitation is typically accumulated.

When it does not snow?

In McClanahan, snow does not fall in January, March through December.

How many hours of daylight does McClanahan have in September?

In McClanahan, the average day length in September is 12h and 20min.

When is the sunrise / sunset in September?

On the first day of September, sunrise is at 7:03 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 7:13 pm CDT.

How many hours of sunshine does McClanahan have in September?

In September, the average sunshine duration is 8.6h.

How high is the UV index in September?

In September, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health threat from exposure to the Sun's 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
McClanahan, TX

Average temperature in September - McClanahan, TX
  • Average high temperature in September: 88.7°F

The warmest month (with the highest average high temperature) is August (96.4°F).
The month with the lowest average high temperature is January (57°F).

  • Average low temperature in September: 70.7°F

The month with the highest average low temperature is August (75.7°F).
The coldest month (with the lowest average low temperature) is January (40.8°F).

Average pressure in September
McClanahan, TX

Average pressure in September - McClanahan, TX
  • 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 (29.92"Hg).

Average wind speed in September
McClanahan, TX

Average wind speed in September - McClanahan, TX
  • Average wind speed in September: 6.6mph

The windiest month (with the highest average wind speed) is March (9.9mph).
The calmest month (with the lowest average wind speed) is September (6.6mph).

Average humidity in September
McClanahan, TX

Average humidity in September - McClanahan, TX
  • Average humidity in September: 66%

The month with the highest relative humidity is May (77%).
The month with the lowest relative humidity is August (59%).

Average rainfall in September
McClanahan, TX

Average rainfall in September - McClanahan, TX
  • Average rainfall in September: 1.1"

The wettest month (with the highest rainfall) is October (2.09").
The driest month (with the least rainfall) is February (0.71").

Average rainfall days in September
McClanahan, TX

Average rainfall days in September - McClanahan, TX
  • Average rainfall days in September: 12.3 days

The month with the highest number of rainy days is May (12.9 days).
The month with the least rainy days is January (5.8 days).

Average snowfall in September
McClanahan, TX

Average snowfall in September - McClanahan, TX
  • Average snowfall in September: 0"

The month with the highest snowfall is February (0.08").
The months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0").

Average snowfall days in September
McClanahan, TX

Average snowfall days in September - McClanahan, TX
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (0.6 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).

Average daylight in September /
Average sunshine in September
McClanahan, TX

Average daylight in September / Average sunshine in September - McClanahan, TX
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).

  • Average sunshine in September: 8h and 4min

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 18min).

Average sunshine days in September
McClanahan, TX

Average sunshine days in September - McClanahan, TX
  • Average sunshine days in September: 15.2 days

The month with the most sunshine days is January (24 days).
The month with the least sunshine days is May (14.8 days).

Average UV index in September
McClanahan, TX

Average UV index in September - McClanahan, TX
  • Average UV index in September: 6

The month with the highest UV index is July (UV index 8).
The months with the lowest UV index are January and December (UV index 3).

Average cloud cover in September
McClanahan, TX

Average cloud cover in September - McClanahan, TX
  • Average cloud cover in September: 30

The month with the most cloud cover is March (Cloud cover 44).
The month with the least cloud cover is August (Cloud cover 22).

Average visibility in September
McClanahan, TX

Average visibility in September - McClanahan, TX
  • 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).

McClanahan, Texas, USA

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