September Weather in Franklin, United States

Last updated: June 24, 2025

In September, the average temperature in Franklin, United States is a pleasant 21°C (70°F). However, temperatures can vary widely, with minimums dipping to 4°C (40°F) and soaring up to 37°C (99°F). This month also brings about 64 mm (2.5 in) of precipitation over 5 days, contributing to an average humidity of 73%. A mix of warmth and moisture creates a unique climate perfect for exploration!

September Temperature in Franklin

In September, in Franklin, the average temperature is 21°C (70°F). The maximum can reach 37°C (99°F), and the minimum can be as low as 4°C (40°F). This wide temperature range makes Franklin an ideal destination for travelers seeking to enjoy both warm days and cooler evenings.

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 21°C (70°F), with highs reaching up to 37°C (99°F) and lows dropping to around 4°C (40°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 64 mm (2.5 in) over the course of 5 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 64 mm (2.5 inches) of precipitation spread over approximately 5 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 Franklin

In Franklin in September, humidity is 73%. With an average temperature of 21°C (70°F), this humidity feels like a warm embrace that can make outdoor activities feel sweltering, so it's essential to stay hydrated and take breaks in the shade while exploring.

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 73%, 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	-2°C (28°F)	24 mm (1.0 inches)	74%	moderate
February Weather	-2°C (28°F)	19 mm (0.8 inches)	78%	moderate
March Weather	6°C (43°F)	76 mm (3.0 inches)	67%	high
April Weather	11°C (52°F)	40 mm (1.6 inches)	70%	very high
May Weather	17°C (63°F)	173 mm (6.8 inches)	82%	very high
June Weather	25°C (76°F)	59 mm (2.3 inches)	81%	extreme
July Weather	26°C (80°F)	68 mm (2.7 inches)	80%	extreme
August Weather	24°C (76°F)	85 mm (3.3 inches)	80%	very high
September Weather	21°C (70°F)	64 mm (2.5 inches)	73%	very high
October Weather	12°C (53°F)	68 mm (2.7 inches)	71%	high
November Weather	5°C (42°F)	19 mm (0.7 inches)	79%	moderate
December Weather	1°C (33°F)	36 mm (1.4 inches)	83%	moderate