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September Weather in Augusta, United States

Last updated: August 27, 2025

In September, the average temperature in Augusta, United States is a pleasant 17°C (63°F). However, temperatures can vary significantly, ranging from a chilly 1°C (33°F) to a warm 33°C (92°F). Expect about 93 mm (3.6 in) of precipitation over approximately 11 days, with an average humidity of around 80%.

September Temperature in Augusta

In September in Augusta, the average temperature is 17°C (63°F). Maximum temperatures can reach 33°C (92°F), while the minimum can drop as low as 1°C (33°F). It's advisable to pack layers to accommodate the varying temperatures during your travels.

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

The chart illustrates September temperature patterns in Augusta, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Augusta, September typically has an average temperature of 17°C (63°F), with highs reaching up to 33°C (92°F) and lows dropping to around 1°C (33°F).
JanFebMarAprMayJunJulAugSepOctNovDec171833435869726963483324
Data source: Temperature data for Augusta 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 Augusta

In Augusta in September, the precipitation amount is 93 mm (3.6 in) over the course of 11 days.

September Precipitation Trends in Augusta

The chart displays monthly precipitation patterns in Augusta, 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 Augusta, September typically receives around 93 mm (3.6 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec33525597130134124132931205251
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Augusta

In Augusta in September humidity is 80%. With an average temperature of 17°C (63°F), this humidity feels like you're walking through a thick, warm blanket, making travel feel slightly stifling and requiring frequent breaks to stay comfortable.

September Average Humidity in Augusta

This chart illustrates the average monthly humidity levels in Augusta, 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 Augusta is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%89%86%85%79%80%80%78%80%84%89%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Augusta

In Augusta in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Augusta.

Maximum UV Index Levels in Augusta for September

The chart shows the monthly maximum UV Index (UVI) for Augusta 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 Augusta typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2458810997532
Data source: Augusta 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 Augusta Compares to Other Months

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

This table compares monthly weather conditions in Augusta, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-8°C (17°F)33 mm (1.3 inches)88%low
February Weather-8°C (18°F)52 mm (2.0 inches)89%moderate
March Weather1°C (33°F)55 mm (2.2 inches)86%moderate
April Weather6°C (43°F)97 mm (3.8 inches)85%very high
May Weather15°C (58°F)130 mm (5.1 inches)79%very high
June Weather21°C (69°F)133 mm (5.3 inches)80%very high
July Weather22°C (73°F)124 mm (4.9 inches)80%very high
August Weather20°C (69°F)132 mm (5.2 inches)78%very high
September Weather17°C (63°F)93 mm (3.6 inches)80%high
October Weather9°C (48°F)120 mm (4.7 inches)84%moderate
November Weather1°C (33°F)52 mm (2.0 inches)89%moderate
December Weather-4°C (24°F)51 mm (2.0 inches)85%low

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