September weather forecast
Bluffton, TX

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Weather in September

The first month of the autumn, September, is still a hot month in Bluffton, Texas, with an average temperature ranging between max 87.1°F (30.6°C) and min 69.1°F (20.6°C).

Temperature

The commencement of September indicates a gentle shift in the average high-temperature, receding from August's very hot 95°F (35°C) to a hot 87.1°F (30.6°C). Bluffton records a steady low-temperature average of 69.1°F (20.6°C) during September.

Heat index

September's average heat index is evaluated at a fiery hot 95°F (35°C). Emphasize additional safety, risk of heat cramps and heat exhaustion is high. Continuous activity might result in heatstroke.
Realize that the values for the heat index are set for shaded places and light winds. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Younglings frequently fail to recognize the requirement to rest and rehydrate. Thirst emerges late in dehydration - it is imperative to keep hydration levels high, particularly during extended physical exertions.
The natural method the human body uses to remove excess heat is by perspiring and letting sweat evaporate. Higher relative humidity impedes evaporation, thus reducing heat dispersion from the body, culminating in a sensation of overheating. As the body accumulates more heat than it can release, body temperature goes up, increasing the risk of heat-related health issues.

Humidity

In September, the average relative humidity is 65%.

Rainfall

In September, the rain falls for 14.5 days. Throughout September, 2.72" (69mm) of precipitation is accumulated. In Bluffton, during the entire year, the rain falls for 128.1 days and collects up to 23.23" (590mm) of precipitation.

Snowfall

In Bluffton, snow does not fall in March through November.

Daylight

In September, the average length of the day in Bluffton is 12h and 20min.
On the first day of the month, sunrise is at 7:10 am and sunset at 7:56 pm. On the last day of September, sunrise is at 7:27 am and sunset at 7:19 pm CDT.

Sunshine

In Bluffton, 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 vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In September, the maximum UV index of 6 translates into these guidelines:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Updated: Aug 31, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in September?

In September, in Bluffton, the average high-temperature is 87.1°F (30.6°C), and the average low-temperature is 69.1°F (20.6°C). In September, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, is evaluated at 95°F (35°C).

What is the average humidity in September?

In Bluffton, the average relative humidity in September is 65%.

How many days does it rain in September?

In Bluffton, in September, during 14.5 rainfall days, 2.72" (69mm) of precipitation is typically accumulated.

When it does not snow?

March through November are months without snowfall.

What is the average length of the day in September?

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

What time are sunrise and sunset in September?

On the first day of September, sunrise is at 7:10 am and sunset at 7:56 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 7:19 pm CDT.

How many hours of sunshine does Bluffton have in September?

In September, the average sunshine duration is 8.6h.

How high is the UV index in September?

The average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe 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
Bluffton, TX

Average temperature in September - Bluffton, TX
  • Average high temperature in September: 87.1°F

The warmest month (with the highest average high temperature) is August (95°F).
The months with the lowest average high temperature are January and December (59°F).

  • Average low temperature in September: 69.1°F

The month with the highest average low temperature is August (74.5°F).
The coldest month (with the lowest average low temperature) is January (40.8°F).

Average pressure in September
Bluffton, TX

Average pressure in September - Bluffton, TX
  • Average pressure in September: 29.96"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

Average wind speed in September
Bluffton, TX

Average wind speed in September - Bluffton, TX
  • Average wind speed in September: 7mph

The windiest months (with the highest average wind speed) are March and April (10.3mph).
The calmest month (with the lowest average wind speed) is September (7mph).

Average humidity in September
Bluffton, TX

Average humidity in September - Bluffton, TX
  • Average humidity in September: 65%

The month with the highest relative humidity is May (72%).
The month with the lowest relative humidity is August (56%).

Average rainfall in September
Bluffton, TX

Average rainfall in September - Bluffton, TX
  • Average rainfall in September: 2.72"

The wettest month (with the highest rainfall) is May (3.98").
The driest month (with the least rainfall) is November (0.98").

Average rainfall days in September
Bluffton, TX

Average rainfall days in September - Bluffton, TX
  • Average rainfall days in September: 14.5 days

The month with the highest number of rainy days is May (15.1 days).
The month with the least rainy days is January (6.9 days).

Average snowfall in September
Bluffton, TX

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

The month with the highest snowfall is February (0.31").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").

Average snowfall days in September
Bluffton, TX

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

The month with the highest number of snowfall days is February (0.9 days).
The months with the least snowfall days are March, April, May, June, July, August, September and October (0 days).

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

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

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

  • Average sunshine in September: 8h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).

Average sunshine days in September
Bluffton, TX

Average sunshine days in September - Bluffton, TX
  • Average sunshine days in September: 13.5 days

The month with the most sunshine days is January (22.3 days).
The month with the least sunshine days is May (13.4 days).

Average UV index in September
Bluffton, TX

Average UV index in September - Bluffton, 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
Bluffton, TX

Average cloud cover in September - Bluffton, TX
  • Average cloud cover in September: 31

The month with the most cloud cover is May (Cloud cover 41).
The month with the least cloud cover is August (Cloud cover 20).

Average visibility in September
Bluffton, TX

Average visibility in September - Bluffton, 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).

Bluffton, Texas, USA

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