September Weather in Columbus, United States

Last updated: June 24, 2025

The average temperature in Columbus, United States during September is a mild 15°C (60°F). However, be prepared for a range, as temperatures can dip as low as -1°C (31°F) and soar up to 37°C (99°F). Expect some rain, with 47 mm (1.9 in) of precipitation over about 5 days, and don't forget to stay hydrated—average humidity is around 76%!

September Temperature in Columbus

In September in Columbus, the average temperature is 15°C (60°F). Maximums can reach 37°C (99°F) and minimums can be as low as -1°C (31°F). This wide range of temperatures makes Columbus an exciting destination to visit during September, so be sure to pack accordingly for both warm and cool weather.

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

The chart illustrates September temperature patterns in Columbus, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Columbus, September typically has an average temperature of 15°C (60°F), with highs reaching up to 37°C (99°F) and lows dropping to around -1°C (31°F).

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

September Precipitation in Columbus

In Columbus in September, the precipitation amount is 47 mm (1.9 in) spread over a duration of 5 days.

September Precipitation Trends in Columbus

The chart displays monthly precipitation patterns in Columbus, 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 Columbus, September typically receives around 47 mm (1.9 inches) of precipitation spread over approximately 5 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 Columbus

In Columbus in September humidity is 76%. With an average temperature of 15°C (60°F), this humidity feels like a warm, damp blanket wrapping around you, making outdoor activities a bit more challenging and urging you to stay hydrated while exploring the area.

September Average Humidity in Columbus

This chart illustrates the average monthly humidity levels in Columbus, 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 Columbus is approximately 76%, 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 Columbus

In Columbus 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 Columbus.

Maximum UV Index Levels in Columbus for September

The chart shows the monthly maximum UV Index (UVI) for Columbus 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 Columbus typically reaches 8, which falls under the very high exposure category.

Data source: Columbus 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 Columbus Compares to Other Months

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

This table compares monthly weather conditions in Columbus, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-4°C (24°F)	18 mm (0.7 inches)	85%	moderate
February Weather	-8°C (19°F)	48 mm (1.9 inches)	85%	moderate
March Weather	1°C (34°F)	37 mm (1.5 inches)	79%	high
April Weather	5°C (42°F)	66 mm (2.6 inches)	74%	very high
May Weather	12°C (53°F)	78 mm (3.1 inches)	76%	very high
June Weather	18°C (65°F)	61 mm (2.4 inches)	79%	extreme
July Weather	22°C (72°F)	20 mm (0.8 inches)	81%	very high
August Weather	21°C (70°F)	21 mm (0.8 inches)	80%	very high
September Weather	15°C (60°F)	47 mm (1.9 inches)	76%	very high
October Weather	6°C (43°F)	45 mm (1.8 inches)	74%	moderate
November Weather	1°C (34°F)	32 mm (1.3 inches)	81%	moderate
December Weather	-3°C (28°F)	29 mm (1.1 inches)	87%	low