Last updated: June 24, 2025
In September, the average temperature in Columbus, United States hovers around 16°C (62°F). During this month, temperatures can dip as low as -1°C (31°F) and soar to a warm 31°C (89°F). Expect around 98 mm (3.8 in) of precipitation spread over 10 days, contributing to an average humidity of 78%. Whether you're basking in the sun or taking shelter from the rain, be prepared for a variety of weather conditions!
In September in Columbus, the average temperature is 16°C (62°F). The maximum can reach 31°C (89°F) and the minimum can be as low as -1°C (31°F). This wide range of temperatures makes it essential for travelers to pack accordingly, ensuring they're prepared for both warm days and cool nights.
In Columbus in September, the precipitation amount is 98 mm (3.8 in) spread over a period of 10 days.
In Columbus in September, humidity is 78%. With an average temperature of 16°C (62°F), this humidity feels like a warm blanket wrapping around you, making outdoor activities enjoyable yet slightly sticky. Travelers may find the weather pleasantly mild, though they'll appreciate having light, breathable clothing on hand to stay comfortable while exploring.
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.
UV Risk Categories
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.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -5°C (23°F) | 89 mm (3.5 inches) | 90% | moderate |
| February Weather | -3°C (27°F) | 100 mm (4.0 inches) | 90% | moderate |
| March Weather | 0°C (33°F) | 91 mm (3.6 inches) | 87% | high |
| April Weather | 7°C (44°F) | 120 mm (4.7 inches) | 88% | very high |
| May Weather | 14°C (57°F) | 130 mm (5.1 inches) | 82% | very high |
| June Weather | 18°C (65°F) | 118 mm (4.7 inches) | 79% | very high |
| July Weather | 21°C (70°F) | 159 mm (6.2 inches) | 78% | very high |
| August Weather | 20°C (68°F) | 133 mm (5.2 inches) | 76% | very high |
| September Weather | 16°C (62°F) | 98 mm (3.8 inches) | 78% | very high |
| October Weather | 11°C (52°F) | 166 mm (6.5 inches) | 84% | high |
| November Weather | 3°C (37°F) | 107 mm (4.2 inches) | 89% | moderate |
| December Weather | -2°C (29°F) | 101 mm (4.0 inches) | 86% | low |