September Weather in Augusta, United States

Last updated: June 24, 2025

In September, the average temperature in Augusta, United States hovers around 21°C (70°F). However, be prepared for temperature fluctuations, as it can dip to a chilly 6°C (43°F) or soar up to a sweltering 35°C (95°F). This month also brings about 90 mm (3.6 in) of precipitation, typically spread across 8 days, contributing to an average humidity of 78%.

September Temperature in Augusta

In September in Augusta, the average temperature is 21°C (70°F). Maximums can reach 35°C (95°F) and minimums can be as low as 6°C (43°F). This range makes it an ideal time for travelers seeking a variety of outdoor experiences, from warm afternoons to cooler evenings.

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 21°C (70°F), with highs reaching up to 35°C (95°F) and lows dropping to around 6°C (43°F).

Data source: Temperature data for Augusta generated using information from the Copernicus Climate Change Service.

September Precipitation in Augusta

In Augusta in September, the total precipitation amount is 90 mm (3.6 in) spread over the course of 8 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 90 mm (3.6 inches) of precipitation spread over approximately 8 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

September Humidity in Augusta

In Augusta in September, humidity is 78%. With an average temperature of 21°C (70°F), this humidity feels like a warm, enveloping blanket that can leave travelers feeling sticky and slightly fatigued, making it important to stay hydrated and take frequent breaks from outdoor activities.

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 78%, offering insight into how humid the weather typically is during this month.

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 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 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 8, which falls under the very high exposure category.

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.
	Temperature	Precipitation	Humidity	UV
January Weather	-2°C (28°F)	59 mm (2.3 inches)	81%	moderate
February Weather	-1°C (30°F)	63 mm (2.5 inches)	81%	moderate
March Weather	6°C (43°F)	112 mm (4.4 inches)	81%	high
April Weather	11°C (52°F)	101 mm (4.0 inches)	82%	very high
May Weather	18°C (65°F)	165 mm (6.5 inches)	78%	very high
June Weather	24°C (75°F)	114 mm (4.5 inches)	81%	extreme
July Weather	26°C (78°F)	86 mm (3.4 inches)	79%	very high
August Weather	24°C (75°F)	91 mm (3.6 inches)	77%	very high
September Weather	21°C (70°F)	90 mm (3.6 inches)	78%	very high
October Weather	13°C (56°F)	102 mm (4.0 inches)	78%	high
November Weather	5°C (41°F)	55 mm (2.2 inches)	87%	moderate
December Weather	2°C (35°F)	43 mm (1.7 inches)	84%	low