September weather forecast
Sublime, TX

Share

Weather in September

September, the first month of the autumn in Sublime, is still a hot month, with temperature in the range of an average high of 88.9°F (31.6°C) and an average low of 71.8°F (22.1°C).

Temperature

September brings a slight decrease in temperature, down from a very hot 95.9°F (35.5°C) in August to a hot 88.9°F (31.6°C). Sublime's nighttime temperature during September is consistently averaged at an agreeable 71.8°F (22.1°C).

Heat index

September's mean heat index is evaluated at a blistering 105.8°F (41°C). Adopt special protective actions against heat exhaustion and heat cramps. Long-duration activity risks heatstroke.
It is essential to grasp that the heat index's numbers are for shade and light wind settings. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is an aggregate value of air's warmth and moisture to show the human-felt temperature. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.
For the human body, perspiration is the go-to method to regulate temperature, using sweat's evaporation to dissipate warmth. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. When the body's heat gain surpasses its removal capacity, body temperature starts to climb, leading to potential heat-related ailments.

Humidity

The average relative humidity in September is 74%.

Rainfall

In September, the rain falls for 17.8 days. Throughout September, 3.31" (84mm) of precipitation is accumulated. In Sublime, during the entire year, the rain falls for 166.8 days and collects up to 28.7" (729mm) of precipitation.

Snowfall

February through November are months without snowfall.

Daylight

In Sublime, the average length of the day in September is 12h and 20min.
On the first day of September, sunrise is at 7:05 am and sunset at 7:48 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 7:13 pm CDT.

Sunshine

In September, the average sunshine is 8.2h.

UV index

In Sublime, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the average person.
Note: In September, the maximum UV index of 6 suggests these recommendations:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Updated: Aug 28, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is it hot during September?

The high-temperature during September is 88.9°F (31.6°C) and the low-temperature is 71.8°F (22.1°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which combines air temperature and relative humidity, in September is evaluated at 105.8°F (41°C).

What is the average humidity in September?

The average relative humidity in September is 74%.

How much does it rain in September?

In Sublime, in September, during 17.8 rainfall days, 3.31" (84mm) of precipitation is typically accumulated.

When it does not snow?

In Sublime, snow does not fall in February through November.

What is the average length of the day in September?

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

What time are sunrise and sunset in September in Sublime?

In September, on the first day of the month, sunrise is at 7:05 am and sunset at 7:48 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 7:13 pm CDT.

How long on average sun shines in September?

In Sublime, the average sunshine duration in September is 8.2h.

What is the UV index intensity in September in Sublime?

In Sublime, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes 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
Sublime, TX

Average temperature in September - Sublime, TX
  • Average high temperature in September: 88.9°F

The warmest month (with the highest average high temperature) is August (95.9°F).
The month with the lowest average high temperature is January (61°F).

  • Average low temperature in September: 71.8°F

The month with the highest average low temperature is August (75.6°F).
The coldest month (with the lowest average low temperature) is January (44.6°F).

Average pressure in September
Sublime, TX

Average pressure in September - Sublime, TX
  • Average pressure in September: 29.95"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in September
Sublime, TX

Average wind speed in September - Sublime, TX
  • Average wind speed in September: 6mph

The windiest month (with the highest average wind speed) is April (8.7mph).
The calmest month (with the lowest average wind speed) is September (6mph).

Average humidity in September
Sublime, TX

Average humidity in September - Sublime, TX
  • Average humidity in September: 74%

The months with the highest relative humidity are March and May (78%).
The month with the lowest relative humidity is August (68%).

Average rainfall in September
Sublime, TX

Average rainfall in September - Sublime, TX
  • Average rainfall in September: 3.31"

The wettest month (with the highest rainfall) is May (3.86").
The driest month (with the least rainfall) is February (1.22").

Average rainfall days in September
Sublime, TX

Average rainfall days in September - Sublime, TX
  • Average rainfall days in September: 17.8 days

The month with the highest number of rainy days is September (17.8 days).
The month with the least rainy days is January (11.2 days).

Average snowfall in September
Sublime, TX

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

The month with the highest snowfall is January (0.2").
The months with the least snowfall are February, March, April, May, June, July, August, September, October and November (0").

Average snowfall days in September
Sublime, TX

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

The month with the highest number of snowfall days is January (0.3 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October and November (0 days).

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

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

The month with the longest days is June (Average daylight: 14h and 0min).
The month with the shortest days is December (Average daylight: 10h and 18min).

  • Average sunshine in September: 8h and 1min

The months with the most sunshine are July and August (Average sunshine: 9h and 36min).
The month with the least sunshine is December (Average sunshine: 4h and 42min).

Average sunshine days in September
Sublime, TX

Average sunshine days in September - Sublime, TX
  • Average sunshine days in September: 10 days

The month with the most sunshine days is January (17.8 days).
The month with the least sunshine days is June (9.8 days).

Average UV index in September
Sublime, TX

Average UV index in September - Sublime, TX
  • 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 3).

Average cloud cover in September
Sublime, TX

Average cloud cover in September - Sublime, TX
  • Average cloud cover in September: 36

The months with the most cloud cover are February and March (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 30).

Average visibility in September
Sublime, TX

Average visibility in September - Sublime, TX
  • Average visibility in September: 6mi

The months with the highest visibility are January, February, August, September, October, November and December (6mi).
The months with the lowest visibility are March, April, May, June and July (5mi).

Sublime, Texas, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location