September Weather in Chattahoochee, United States

Last updated: June 24, 2025

In September, the average temperature in Chattahoochee, United States is a warm 26°C (79°F), making it a pleasant time to visit. Expect temperatures to range from a cool 14°C (57°F) to a sizzling 37°C (99°F). With 135 mm (5.3 in) of precipitation spread over 13 days, it's wise to carry an umbrella. Additionally, the average humidity sits at a high 83%, creating a tropical atmosphere.

September Temperature in Chattahoochee

In September in Chattahoochee, the average temperature is 26°C (79°F). Maximums can reach 37°C (99°F) and minimums can be as low as 14°C (57°F). This climate makes Chattahoochee an ideal destination for warm-weather activities, offering a comfortable balance for both relaxation and adventure.

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

The chart illustrates September temperature patterns in Chattahoochee, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Chattahoochee, September typically has an average temperature of 26°C (79°F), with highs reaching up to 37°C (99°F) and lows dropping to around 14°C (57°F).

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

September Precipitation in Chattahoochee

In Chattahoochee in September, the precipitation amount is 135 mm (5.3 in) over the course of 13 days.

September Precipitation Trends in Chattahoochee

The chart displays monthly precipitation patterns in Chattahoochee, 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 Chattahoochee, September typically receives around 135 mm (5.3 inches) of precipitation spread over approximately 13 days.

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

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Millimeters (mm) Inches (in)

September Humidity in Chattahoochee

In Chattahoochee in September, humidity is 83%. With an average temperature of 26°C (79°F), this humidity feels like a heavy blanket enveloping you, making travel an exercise in endurance as the air clings to your skin and saps your energy.

September Average Humidity in Chattahoochee

This chart illustrates the average monthly humidity levels in Chattahoochee, 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 Chattahoochee is approximately 83%, 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 Chattahoochee

In Chattahoochee in September, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Chattahoochee.

Maximum UV Index Levels in Chattahoochee for September

The chart shows the monthly maximum UV Index (UVI) for Chattahoochee 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 Chattahoochee typically reaches 10, which falls under the very high exposure category.

Data source: Chattahoochee 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 Chattahoochee Compares to Other Months

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

This table compares monthly weather conditions in Chattahoochee, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	12°C (53°F)	82 mm (3.2 inches)	85%	moderate
February Weather	15°C (59°F)	122 mm (4.8 inches)	82%	very high
March Weather	17°C (63°F)	57 mm (2.2 inches)	80%	very high
April Weather	20°C (68°F)	107 mm (4.2 inches)	76%	extreme
May Weather	24°C (76°F)	80 mm (3.2 inches)	73%	extreme
June Weather	27°C (80°F)	161 mm (6.4 inches)	74%	extreme
July Weather	27°C (81°F)	151 mm (5.9 inches)	80%	extreme
August Weather	27°C (81°F)	149 mm (5.9 inches)	79%	extreme
September Weather	26°C (79°F)	135 mm (5.3 inches)	83%	very high
October Weather	23°C (73°F)	93 mm (3.6 inches)	77%	very high
November Weather	15°C (60°F)	47 mm (1.8 inches)	84%	high
December Weather	13°C (56°F)	119 mm (4.7 inches)	88%	moderate