September Weather in Franklin, United States

Last updated: June 24, 2025

In September, the average temperature in Franklin, United States is a pleasant 18°C (65°F), but be prepared for fluctuations: the minimum can drop to 1°C (34°F) while the maximum can reach a warm 30°C (87°F). With 118 mm (4.6 in) of precipitation distributed over 11 days, it's wise to carry an umbrella. The average humidity hovers around 68%, adding a touch of moisture to the air.

September Temperature in Franklin

In September in Franklin, the average temperature is 18°C (65°F), with maximums reaching up to 30°C (87°F) and minimums dropping as low as 1°C (34°F). This mild climate makes it an ideal time for travelers to explore outdoor activities and enjoy the local scenery.

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

The chart illustrates September temperature patterns in Franklin, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Franklin, September typically has an average temperature of 18°C (65°F), with highs reaching up to 30°C (87°F) and lows dropping to around 1°C (34°F).

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

September Precipitation in Franklin

In Franklin in September, the precipitation amount is 118 mm (4.6 in) over the course of 11 days.

September Precipitation Trends in Franklin

The chart displays monthly precipitation patterns in Franklin, 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 Franklin, September typically receives around 118 mm (4.6 inches) of precipitation spread over approximately 11 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 Franklin

In Franklin in September, humidity is 68%. With an average temperature of 18°C (65°F), this humidity feels like a warm, enveloping blanket, making travel somewhat sticky and requiring occasional breaks for refreshing hydration.

September Average Humidity in Franklin

This chart illustrates the average monthly humidity levels in Franklin, 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 Franklin is approximately 68%, 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 Franklin

In Franklin 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 Franklin.

Maximum UV Index Levels in Franklin for September

The chart shows the monthly maximum UV Index (UVI) for Franklin 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 Franklin typically reaches 9, which falls under the very high exposure category.

Data source: Franklin 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 Franklin Compares to Other Months

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

This table compares monthly weather conditions in Franklin, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	0°C (31°F)	71 mm (2.8 inches)	86%	moderate
February Weather	2°C (37°F)	106 mm (4.2 inches)	86%	moderate
March Weather	5°C (42°F)	85 mm (3.3 inches)	86%	high
April Weather	10°C (51°F)	119 mm (4.7 inches)	84%	very high
May Weather	16°C (61°F)	144 mm (5.7 inches)	78%	extreme
June Weather	20°C (67°F)	112 mm (4.4 inches)	79%	very high
July Weather	22°C (72°F)	102 mm (4.0 inches)	70%	extreme
August Weather	21°C (70°F)	130 mm (5.1 inches)	59%	very high
September Weather	18°C (65°F)	118 mm (4.6 inches)	68%	very high
October Weather	13°C (55°F)	117 mm (4.6 inches)	80%	high
November Weather	5°C (41°F)	71 mm (2.8 inches)	86%	moderate
December Weather	2°C (36°F)	92 mm (3.6 inches)	85%	moderate