September weather forecast
College Station, TX

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Weather in September

In September, College Station begins transitioning toward autumn, with temperate conditions and clear skies. There's noticeable drop in temperature as compared to August, falling from a high of 95.5°F (35.3°C) to 88.7°F (31.5°C) in September. A decrease in rainfall aids these warm, dry conditions, making it an enjoyable time to explore the city and its surroundings. As autumn approaches, the city is painted with a spectacular array of color. This gradient change in foliage, alongside the calm weather, makes this month a favorite among many.

Temperature

The onset of September brings a small shift in high-temperatures, falling from a sweltering 95.5°F (35.3°C) in August to a hot 88.7°F (31.5°C). College Station temperatures generally rest at a low of 70.3°F (21.3°C) during the September nights.

Heat index

Throughout September, the heat index is evaluated at a sweltering 102.2°F (39°C). Adopt enhanced safety measures, heat exhaustion and heat cramps could occur. Continuous activity may induce heatstroke.
Research indicates the heat index considers values in shaded locales and with light winds. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', binds temperature metrics with humidity values to give a sense of the actual warmth. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.
To cool down, the human body relies on perspiration, a process where excessive heat is eliminated as sweat evaporates. Higher relative humidity impedes evaporation, thus reducing heat dispersion from the body, culminating in a sensation of overheating. Overheating dangers loom when the body's heat release mechanisms are overshadowed by excessive gain.

Humidity

The average relative humidity in September is 71%.

Rainfall

In September, the rain falls for 14.7 days. Throughout September, 1.93" (49mm) of precipitation is accumulated. In College Station, during the entire year, the rain falls for 138.2 days and collects up to 20.12" (511mm) of precipitation.

Snowfall

In College Station, snow does not fall in February through December.

Daylight

The average length of the day in September is 12h and 20min.
On the first day of the month, sunrise is at 7:02 am and sunset at 7:47 pm. On the last day of September, in College Station, sunrise is at 7:18 am and sunset at 7:11 pm CDT.

Sunshine

In College Station, the average sunshine in September is 8.5h.

UV index

The average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: In September, the average maximum UV index of 6 translates into the following recommendations:
Guard against overexposure. Protection from sun-induced harm is essential. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.

Frequently asked questions

How hot is it in College Station in September?

During September, College Station experiences an average high-temperature of 88.7°F (31.5°C) and a low-temperature of 70.3°F (21.3°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which factors the actual air temperature with the relative humidity, in September is evaluated at 102.2°F (39°C).

What is the average humidity in September in College Station?

The average relative humidity in September in College Station, Texas, is 71%.

How many days does it rain in September in College Station?

In College Station, Texas, in September, during 14.7 rainfall days, 1.93" (49mm) of precipitation is typically accumulated.

When it does not snow in College Station?

In College Station, snow does not fall in February through December.

What is the average length of the day in September in College Station?

In College Station, Texas, the average day length in September is 12h and 20min.

When are sunrise and sunset in September in College Station?

In September, on the first day of the month, sunrise is at 7:02 am and sunset at 7:47 pm. On the last day of the month, in College Station, sunrise is at 7:18 am and sunset at 7:11 pm CDT.

How many hours of sunshine does College Station have in September?

The average sunshine duration in September is 8.5h.

What is the UV index intensity in September in College Station?

The average daily maximum UV index in September in College Station is 6. A UV Index reading of 6 to 7 represents a high hazard to health 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
College Station, TX

Average temperature in September - College Station, 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 (58.1°F).

  • Average low temperature in September: 70.3°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 (42.3°F).

Average pressure in September
College Station, TX

Average pressure in September - College Station, 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 (29.93"Hg).

Average wind speed in September
College Station, TX

Average wind speed in September - College Station, TX
  • Average wind speed in September: 5.7mph

The windiest month (with the highest average wind speed) is February (8.5mph).
The calmest month (with the lowest average wind speed) is September (5.7mph).

Average humidity in September
College Station, TX

Average humidity in September - College Station, TX
  • Average humidity in September: 71%

The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is August (66%).

Average rainfall in September
College Station, TX

Average rainfall in September - College Station, TX
  • Average rainfall in September: 1.93"

The wettest month (with the highest rainfall) is May (2.95").
The driest month (with the least rainfall) is February (0.83").

Average rainfall days in September
College Station, TX

Average rainfall days in September - College Station, TX
  • Average rainfall days in September: 14.7 days

The month with the highest number of rainy days is September (14.7 days).
The month with the least rainy days is January (8.1 days).

Average snowfall in September
College Station, TX

Average snowfall in September - College Station, TX
  • Average snowfall in September: 0"

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

Average snowfall days in September
College Station, TX

Average snowfall days in September - College Station, TX
  • Average snowfall days in September: 0 days

The months with the highest number of snowfall days are January and February (0.3 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
College Station, TX

Average daylight in September / Average sunshine in September - College Station, 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 3min

The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).

Average sunshine days in September
College Station, TX

Average sunshine days in September - College Station, TX
  • Average sunshine days in September: 12.7 days

The month with the most sunshine days is January (20.4 days).
The month with the least sunshine days is September (12.7 days).

Average UV index in September
College Station, TX

Average UV index in September - College Station, 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
College Station, TX

Average cloud cover in September - College Station, TX
  • Average cloud cover in September: 33

The months with the most cloud cover are February and March (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 27).

Average visibility in September
College Station, TX

Average visibility in September - College Station, TX
  • Average visibility in September: 6mi

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

College Station, Texas, USA

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