September weather forecast
Corsicana, TX

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Weather in September

The first month of the autumn, September, is still a hot month in Corsicana, Texas, with an average temperature ranging between min 69.6°F (20.9°C) and max 88.7°F (31.5°C).

Temperature

The shift from August to September includes a small decrease in the average high-temperature, from a sweltering 95.5°F (35.3°C) to a tropical 88.7°F (31.5°C). Corsicana registers a consistent average low-temperature of 69.6°F (20.9°C) during September.

Heat index

The average heat index in September is evaluated at a very hot 100.4°F (38°C). Ensure extra safety steps, heat exhaustion and heat cramps are likely. Long activity might lead to heatstroke.
When assessing, remember that heat index measurements are for light winds and shaded spots. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', embodies the combination of air temperature and moisture content to illustrate perceived heat. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. Should you be directly under the sun, anticipate a possible increase in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
To combat high temperatures, the human body perspires and relies on sweat evaporation for cooling. In conditions of both high temperature and humidity (a high heat index), sweating is limited and the perception of heat is enhanced. When body heat isn't effectively managed, risks of dehydration and overheating amplify.

Humidity

In Corsicana, the average relative humidity in September is 67%.

Rainfall

In September, the rain falls for 11.5 days. Throughout September, 1.14" (29mm) of precipitation is accumulated. In Corsicana, during the entire year, the rain falls for 113.6 days and collects up to 16.38" (416mm) of precipitation.

Snowfall

In Corsicana, snow does not fall in April through December.

Daylight

In September, the average length of the day is 12h and 21min.
On the first day of September, sunrise is at 7:01 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 7:11 pm CDT.

Sunshine

In Corsicana, the average sunshine in September is 8.5h.

UV index

In September, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 6 in September interprets into the following advice:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Updated: Aug 23, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is September?

The average high-temperature, in September, in Corsicana, is 88.7°F (31.5°C), while the average low-temperature is 69.6°F (20.9°C). In September, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which factors the actual air temperature with the relative humidity, is evaluated at 100.4°F (38°C).

What is the average humidity in September?

The average relative humidity in September is 67%.

How much does it rain in September?

In Corsicana, during September, the rain falls for 11.5 days and regularly aggregates up to 1.14" (29mm) of precipitation.

When it does not snow?

In Corsicana, snow does not fall in April through December.

What is the average length of the day in September?

In Corsicana, the average day length in September is 12h and 21min.

When are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 7:01 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 7:11 pm CDT.

How long on average sun shines in September?

The average sunshine duration in September is 8.5h.

How high is the UV index in September?

The average daily maximum UV index in September in Corsicana is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability 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
Corsicana, TX

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

The warmest month (with the highest average high temperature) is August (95.5°F).
The month with the lowest average high temperature is January (55.8°F).

  • Average low temperature in September: 69.6°F

The month with the highest average low temperature is August (74.8°F).
The coldest month (with the lowest average low temperature) is January (40.1°F).

Average pressure in September
Corsicana, TX

Average pressure in September - Corsicana, TX
  • Average pressure in September: 29.97"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in September
Corsicana, TX

Average wind speed in September - Corsicana, TX
  • Average wind speed in September: 6.2mph

The windiest month (with the highest average wind speed) is March (9.4mph).
The calmest month (with the lowest average wind speed) is September (6.2mph).

Average humidity in September
Corsicana, TX

Average humidity in September - Corsicana, TX
  • Average humidity in September: 67%

The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is August (61%).

Average rainfall in September
Corsicana, TX

Average rainfall in September - Corsicana, TX
  • Average rainfall in September: 1.14"

The wettest month (with the highest rainfall) is October (2.48").
The driest month (with the least rainfall) is January (0.79").

Average rainfall days in September
Corsicana, TX

Average rainfall days in September - Corsicana, TX
  • Average rainfall days in September: 11.5 days

The month with the highest number of rainy days is May (12.9 days).
The month with the least rainy days is January (5.3 days).

Average snowfall in September
Corsicana, TX

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

The month with the highest snowfall is February (0.16").
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0").

Average snowfall days in September
Corsicana, TX

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

The month with the highest number of snowfall days is February (0.5 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
Corsicana, TX

Average daylight in September / Average sunshine in September - Corsicana, 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 3min

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 18min).

Average sunshine days in September
Corsicana, TX

Average sunshine days in September - Corsicana, TX
  • Average sunshine days in September: 16.2 days

The month with the most sunshine days is January (24.8 days).
The month with the least sunshine days is May (14.7 days).

Average UV index in September
Corsicana, TX

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

The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).

Average cloud cover in September
Corsicana, TX

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

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
Corsicana, TX

Average visibility in September - Corsicana, 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).

Corsicana, Texas, USA

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