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September Weather in Charlotte, United States

Last updated: June 24, 2025

In Charlotte, United States, the average temperature in September is a pleasant 23°C (74°F). However, temperatures can range from a brisk 8°C (46°F) to a sweltering 37°C (98°F). Expect 122 mm (4.8 in) of precipitation spread over 8 days, contributing to an average humidity of 71%. Make sure to pack accordingly for this dynamic climate!

September Temperature in Charlotte

In September in Charlotte, the average temperature is 23°C (74°F). Maximum can reach 37°C (98°F) and minimum can be as low as 8°C (46°F). This range makes it a great time for travelers to enjoy a mix of warm days and cooler evenings.

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

The chart illustrates September temperature patterns in Charlotte, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Charlotte, September typically has an average temperature of 23°C (74°F), with highs reaching up to 37°C (98°F) and lows dropping to around 8°C (46°F).
JanFebMarAprMayJunJulAugSepOctNovDec404452597077807873634845
Data source: Temperature data for Charlotte 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 Charlotte

In Charlotte in September, the precipitation amount is 122 mm (4.8 in) spread over 8 days.

September Precipitation Trends in Charlotte

The chart displays monthly precipitation patterns in Charlotte, 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 Charlotte, September typically receives around 122 mm (4.8 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec9917715816012711712613012213481140
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Charlotte

In Charlotte in September, humidity is 71%. With an average temperature of 23°C (74°F), this humidity feels like a warm, enveloping embrace that can make outdoor activities feel sticky, but if you're well-hydrated and take breaks in the shade, it offers a pleasant tropical ambiance perfect for exploration.

September Average Humidity in Charlotte

This chart illustrates the average monthly humidity levels in Charlotte, 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 Charlotte is approximately 71%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%86%86%82%83%83%80%74%71%78%88%88%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Charlotte

In Charlotte 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 Charlotte.

Maximum UV Index Levels in Charlotte for September

The chart shows the monthly maximum UV Index (UVI) for Charlotte 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 Charlotte typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec36710101111109753
Data source: Charlotte 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 Charlotte Compares to Other Months

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

This table compares monthly weather conditions in Charlotte, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (40°F)99 mm (3.9 inches)87%moderate
February Weather7°C (44°F)177 mm (7.0 inches)86%high
March Weather11°C (53°F)158 mm (6.2 inches)86%high
April Weather15°C (59°F)160 mm (6.3 inches)82%very high
May Weather21°C (70°F)127 mm (5.0 inches)82%very high
June Weather25°C (77°F)117 mm (4.6 inches)83%extreme
July Weather27°C (80°F)126 mm (4.9 inches)80%extreme
August Weather25°C (78°F)130 mm (5.1 inches)74%very high
September Weather23°C (74°F)122 mm (4.8 inches)71%very high
October Weather17°C (63°F)134 mm (5.3 inches)78%high
November Weather9°C (48°F)81 mm (3.2 inches)88%moderate
December Weather7°C (45°F)140 mm (5.5 inches)88%moderate

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