September Weather in Rome, United States

Last updated: June 24, 2025

In September, the average temperature in Rome, United States is a pleasant 24°C (75°F). Expect a range with minimums dipping to 10°C (50°F) and maximums soaring to 36°C (97°F). Rainfall can be expected, averaging 106 mm (4.2 in) over 9 days, accompanied by an average humidity of 64%. Enjoy the diverse climate!

September Temperature in Rome

In September in Rome, the average temperature is 24°C (75°F). The maximum can reach 36°C (97°F), while the minimum can be as low as 10°C (50°F). Whether you're looking to enjoy warm days or cool evenings, this climate provides a comfortable backdrop for exploring and enjoying all that Rome has to offer.

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

The chart illustrates September temperature patterns in Rome, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rome, September typically has an average temperature of 24°C (75°F), with highs reaching up to 36°C (97°F) and lows dropping to around 10°C (50°F).

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

September Precipitation in Rome

In Rome in September, the total precipitation amount is 106 mm (4.2 in), spread over the course of 9 days.

September Precipitation Trends in Rome

The chart displays monthly precipitation patterns in Rome, 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 Rome, September typically receives around 106 mm (4.2 inches) of precipitation spread over approximately 9 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 Rome

In Rome in September humidity is 64%. With average temperature 24°C (75°F), this humidity feels like a warm blanket enveloping you, making outdoor exploration both refreshing and a little sticky, perfect for leisurely strolls and shaded cafes but with a need for frequent water breaks.

September Average Humidity in Rome

This chart illustrates the average monthly humidity levels in Rome, 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 Rome is approximately 64%, 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 Rome

In Rome 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 Rome.

Maximum UV Index Levels in Rome for September

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

Data source: Rome 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 Rome Compares to Other Months

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

This table compares monthly weather conditions in Rome, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	7°C (45°F)	115 mm (4.5 inches)	87%	moderate
February Weather	10°C (50°F)	179 mm (7.1 inches)	87%	high
March Weather	13°C (56°F)	148 mm (5.8 inches)	85%	very high
April Weather	17°C (62°F)	138 mm (5.4 inches)	82%	very high
May Weather	22°C (72°F)	94 mm (3.7 inches)	83%	extreme
June Weather	25°C (77°F)	120 mm (4.7 inches)	82%	extreme
July Weather	27°C (80°F)	110 mm (4.3 inches)	78%	extreme
August Weather	26°C (79°F)	137 mm (5.4 inches)	67%	extreme
September Weather	24°C (75°F)	106 mm (4.2 inches)	64%	very high
October Weather	19°C (66°F)	130 mm (5.1 inches)	74%	high
November Weather	11°C (52°F)	87 mm (3.4 inches)	87%	high
December Weather	9°C (48°F)	145 mm (5.7 inches)	88%	moderate