September Weather in Carrollton, United States

Last updated: June 24, 2025

In Carrollton, United States, the average temperature in September hovers around 25°C (78°F), making it a pleasant destination. However, be prepared for some temperature swings, as it can drop to a cool 11°C (52°F) or soar to a scorching 37°C (99°F). During this month, expect about 79 mm (3.1 in) of precipitation over 9 days, coupled with an average humidity of 74%. Stay hydrated and enjoy your journey!

September Temperature in Carrollton

In September in Carrollton, the average temperature is 25°C (78°F). The maximum can reach 37°C (99°F), while the minimum can drop as low as 11°C (52°F). This mild climate makes Carrollton an ideal destination for travelers seeking warm and pleasant weather.

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 25°C (78°F), with highs reaching up to 37°C (99°F) and lows dropping to around 11°C (52°F).
JanFebMarAprMayJunJulAugSepOctNovDec485359647379828178685451
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 79 mm (3.1 in) spread over 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 79 mm (3.1 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec112173162152113160971267910970140
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 74%. With an average temperature of 25°C (78°F), this humidity feels like you're enveloped in a warm, thick blanket, making outdoor activities feel more strenuous and necessitating frequent breaks and hydration for comfortable travel.

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 74%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%84%82%82%82%79%82%77%74%73%85%88%
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 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check 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 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec47810111111119864
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 Weather9°C (48°F)112 mm (4.4 inches)85%moderate
February Weather11°C (53°F)173 mm (6.8 inches)84%high
March Weather15°C (60°F)162 mm (6.4 inches)82%very high
April Weather18°C (64°F)152 mm (6.0 inches)82%very high
May Weather23°C (74°F)112 mm (4.4 inches)82%extreme
June Weather26°C (79°F)160 mm (6.3 inches)79%extreme
July Weather28°C (82°F)97 mm (3.8 inches)82%extreme
August Weather27°C (81°F)126 mm (5.0 inches)77%extreme
September Weather25°C (78°F)79 mm (3.1 inches)74%very high
October Weather20°C (69°F)108 mm (4.3 inches)73%very high
November Weather12°C (54°F)70 mm (2.8 inches)85%high
December Weather10°C (51°F)139 mm (5.5 inches)88%moderate

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