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September Weather in Carrollton, United States

Last updated: June 24, 2025

In September, the average temperature in Carrollton, United States hovers around 22°C (71°F), with temperatures ranging from a cool 7°C (45°F) to a warm 35°C (95°F). During this month, expect about 98 mm (3.9 in) of precipitation spread over 9 days, contributing to an average humidity level of 69%.

September Temperature in Carrollton

In September in Carrollton, the average temperature is 22°C (71°F). Maximum temperatures can reach 35°C (95°F), while minimums can drop as low as 7°C (45°F). This variation in temperature makes it a suitable time for travelers to enjoy both warm days and cooler evenings.

September Weather in Carrollton: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Carrollton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Carrollton, September typically has an average temperature of 22°C (71°F), with highs reaching up to 35°C (95°F) and lows dropping to around 7°C (45°F).
JanFebMarAprMayJunJulAugSepOctNovDec343846556674777571594439
Data source: Temperature data for Carrollton generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Carrollton

In Carrollton in September, the precipitation amount is 98 mm (3.9 in) spread over a duration of 9 days.

September Precipitation Trends in Carrollton

The chart displays monthly precipitation patterns in Carrollton, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Carrollton, September typically receives around 98 mm (3.9 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec851201391341251541091009910296107
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Carrollton

In Carrollton in September humidity is 69%. With an average temperature of 22°C (71°F), this humidity feels like walking through a warm embrace, making travel slightly uncomfortable yet refreshing, as the air clings to your skin and adds a layer of warmth to your exploration.

September Average Humidity in Carrollton

This chart illustrates the average monthly humidity levels in Carrollton, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Carrollton is approximately 69%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%85%86%84%79%82%79%70%69%76%88%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Carrollton

In Carrollton in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Carrollton.

Maximum UV Index Levels in Carrollton for September

The chart shows the monthly maximum UV Index (UVI) for Carrollton in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Carrollton typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec357910101098643
Data source: Carrollton September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How September Weather in Carrollton Compares to Other Months

Weather in Carrollton varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Carrollton, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Carrollton, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (34°F)85 mm (3.4 inches)87%moderate
February Weather3°C (38°F)120 mm (4.7 inches)85%moderate
March Weather8°C (46°F)139 mm (5.5 inches)86%high
April Weather13°C (55°F)134 mm (5.3 inches)84%very high
May Weather19°C (67°F)125 mm (4.9 inches)79%very high
June Weather23°C (74°F)154 mm (6.1 inches)82%very high
July Weather25°C (78°F)109 mm (4.3 inches)79%very high
August Weather24°C (76°F)100 mm (3.9 inches)70%very high
September Weather22°C (71°F)98 mm (3.9 inches)69%very high
October Weather15°C (60°F)102 mm (4.0 inches)76%high
November Weather7°C (44°F)96 mm (3.8 inches)88%moderate
December Weather4°C (40°F)107 mm (4.2 inches)87%moderate

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