September weather forecast
Campbell, TX

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Weather in September

The first month of the autumn, September, is still a tropical month in Campbell, Texas, with an average temperature varying between 86.7°F (30.4°C) and 68°F (20°C).

Temperature

With the arrival of September, Campbell notices a mild change in the average high-temperature, sliding from August's hot 94.1°F (34.5°C) to a still tropical 86.7°F (30.4°C). Campbell, in September, witnesses an average low-temperature of 68°F (20°C).

Heat index

September's average heat index is estimated at a sweltering 96.8°F (36°C). Adopt heightened safety measures, heat cramps and heat exhaustion may occur. Sustained activity might cause heatstroke.
For clarity, heat index numbers account for light winds and areas under shade. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is the result of factoring in humidity to the air temperature, indicating perceived warmth. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. Always consider that direct sunlight exposure might heighten the heat's effects, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. With excessive moisture in the atmosphere, the effectiveness of the evaporation process is decreased, causing the body to cool down less efficiently, leading to a sensation of overheating. Overheating dangers loom when the body's heat release mechanisms are overshadowed by excessive gain.

Humidity

In Campbell, the average relative humidity in September is 68%.

Rainfall

In Campbell, Texas, in September, during 13.5 rainfall days, 2.52" (64mm) of precipitation is typically accumulated. In Campbell, Texas, during the entire year, the rain falls for 143.9 days and collects up to 32.24" (819mm) of precipitation.

Snowfall

In Campbell, snow does not fall in April through October and December.

Daylight

In September, the average length of the day is 12h and 22min.
On the first day of the month, sunrise is at 6:58 am and sunset at 7:48 pm. On the last day of September, sunrise is at 7:17 am and sunset at 7:09 pm CDT.

Sunshine

In September, the average sunshine is 8.8h.

UV index

In September, the average daily maximum UV index in Campbell, Texas, is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: In September, the UV index of 6 transforms into the following advice:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is September in Campbell?

In September, the average high-temperature and low-temperature in Campbell are 86.7°F (30.4°C) and 68°F (20°C) respectively. The average heat index (a.k.a. 'feels like', 'felt air temperature'), which combines air temperature and relative humidity, in September is estimated at 96.8°F (36°C).

What is the average humidity in September in Campbell?

In Campbell, Texas, the average relative humidity in September is 68%.

How many days does it rain in September in Campbell?

In Campbell, during September, the rain falls for 13.5 days and regularly aggregates up to 2.52" (64mm) of precipitation.

When it does not snow in Campbell?

In Campbell, Texas, snow does not fall in April through October and December.

How many hours of daylight does Campbell have in September?

The average day length in September in Campbell is 12h and 22min.

When is the sunrise / sunset in September in Campbell?

On the first day of September, sunrise is at 6:58 am and sunset at 7:48 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 7:09 pm CDT.

How many hours of sunshine does Campbell have in September?

In September, the average sunshine duration in Campbell, Texas, is 8.8h.

What is the UV index reading in September in Campbell?

In Campbell, the average daily maximum UV index in September is 6. A UV Index estimate 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
Campbell, TX

Average temperature in September - Campbell, TX
  • Average high temperature in September: 86.7°F

The warmest month (with the highest average high temperature) is August (94.1°F).
The month with the lowest average high temperature is January (53.1°F).

  • Average low temperature in September: 68°F

The month with the highest average low temperature is July (73.8°F).
The coldest month (with the lowest average low temperature) is January (37°F).

Average pressure in September
Campbell, TX

Average pressure in September - Campbell, TX
  • Average pressure in September: 29.98"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in September
Campbell, TX

Average wind speed in September - Campbell, TX
  • Average wind speed in September: 6.4mph

The windiest month (with the highest average wind speed) is March (9.4mph).
The calmest month (with the lowest average wind speed) is September (6.4mph).

Average humidity in September
Campbell, TX

Average humidity in September - Campbell, TX
  • Average humidity in September: 68%

The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is August (63%).

Average rainfall in September
Campbell, TX

Average rainfall in September - Campbell, TX
  • Average rainfall in September: 2.52"

The wettest month (with the highest rainfall) is October (3.86").
The driest month (with the least rainfall) is January (1.69").

Average rainfall days in September
Campbell, TX

Average rainfall days in September - Campbell, TX
  • Average rainfall days in September: 13.5 days

The month with the highest number of rainy days is May (15 days).
The month with the least rainy days is January (8.5 days).

Average snowfall in September
Campbell, TX

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

The month with the highest snowfall is February (0.91").
The months with the least snowfall are April, May, June, July, August, September, October and December (0").

Average snowfall days in September
Campbell, TX

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

The month with the highest number of snowfall days is February (1.3 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
Campbell, TX

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

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

  • Average sunshine in September: 8h and 5min

The month with the most sunshine is August (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).

Average sunshine days in September
Campbell, TX

Average sunshine days in September - Campbell, TX
  • Average sunshine days in September: 14.4 days

The month with the most sunshine days is January (20.8 days).
The months with the least sunshine days are April and May (14.2 days).

Average UV index in September
Campbell, TX

Average UV index in September - Campbell, 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, February, November and December (UV index 3).

Average cloud cover in September
Campbell, TX

Average cloud cover in September - Campbell, TX
  • Average cloud cover in September: 28

The month with the most cloud cover is February (Cloud cover 44).
The month with the least cloud cover is August (Cloud cover 21).

Average visibility in September
Campbell, TX

Average visibility in September - Campbell, 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).

Campbell, Texas, USA

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