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September Weather in Carrollton, United States

Last updated: June 24, 2025

In September, the average temperature in Carrollton, United States is a pleasant 24°C (75°F). Visitors can expect a minimum of 12°C (54°F) and a maximum of 35°C (96°F), making it a versatile time for outdoor activities. With an average humidity of 78%, the atmosphere can feel quite tropical. However, be prepared for some rain, as 120 mm (4.7 in) of precipitation typically falls over 11 days during the month. Enjoy the blend of warmth and moisture that defines this vibrant location!

September Temperature in Carrollton

In September in Carrollton, the average temperature is 24°C (75°F). The maximum can reach 35°C (96°F) and the minimum can be as low as 12°C (54°F). This weather makes it ideal for travelers seeking pleasant, warm conditions with opportunities to enjoy both the sun 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 24°C (75°F), with highs reaching up to 35°C (96°F) and lows dropping to around 12°C (54°F).
JanFebMarAprMayJunJulAugSepOctNovDec424650606976817974655246
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 120 mm (4.7 in) during a span of 11 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 120 mm (4.7 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec8510585103118115132157120877686
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 78%. With an average temperature of 24°C (75°F), this humidity feels like a warm blanket wrapping around you, making travel sticky and heavy but also inviting, as long as you're prepared with plenty of water and light clothing.

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 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%83%82%81%80%82%81%81%78%80%84%84%
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.
JanFebMarAprMayJunJulAugSepOctNovDec3679101011108853
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 Weather5°C (42°F)85 mm (3.3 inches)84%moderate
February Weather8°C (47°F)105 mm (4.1 inches)83%high
March Weather10°C (51°F)85 mm (3.3 inches)82%high
April Weather16°C (60°F)103 mm (4.1 inches)81%very high
May Weather20°C (69°F)118 mm (4.7 inches)80%very high
June Weather25°C (76°F)114 mm (4.5 inches)82%very high
July Weather27°C (81°F)132 mm (5.2 inches)81%extreme
August Weather26°C (79°F)157 mm (6.2 inches)81%very high
September Weather24°C (75°F)120 mm (4.7 inches)78%very high
October Weather19°C (66°F)87 mm (3.4 inches)80%very high
November Weather11°C (52°F)76 mm (3.0 inches)84%moderate
December Weather8°C (46°F)86 mm (3.4 inches)84%moderate

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