Last updated: June 24, 2025
In September, the average temperature in Columbus Junction, United States hovers around 21°C (69°F). Be prepared for a range of minimum temperatures dipping to 6°C (43°F) and soaring to a maximum of 35°C (95°F). Expect about 109 mm (4.3 in) of precipitation over the course of 8 days, accompanied by an average humidity level of 78%—perfect for those who love a moist, tropical feel!
In September in Columbus Junction, the average temperature is 21°C (69°F). Maximums can reach 35°C (95°F), while minimums can dip as low as 6°C (43°F). It's advisable to pack layers to accommodate the temperature fluctuations during your travels.
In Columbus Junction in September, the total precipitation amount is 109 mm (4.3 in) spread over 8 days.
In Columbus Junction in September, humidity is 78%. With an average temperature of 21°C (69°F), this humidity feels like a warm embrace that clings to your skin, making outdoor activities feel more intense and leaving you yearning for refreshing breezes or a cool drink as you explore.
In Columbus Junction 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 Junction.
UV Risk Categories
Weather in Columbus Junction varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Columbus Junction, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -4°C (24°F) | 53 mm (2.1 inches) | 81% | moderate |
| February Weather | -3°C (27°F) | 59 mm (2.3 inches) | 81% | moderate |
| March Weather | 5°C (41°F) | 91 mm (3.6 inches) | 81% | high |
| April Weather | 10°C (50°F) | 88 mm (3.4 inches) | 82% | very high |
| May Weather | 17°C (64°F) | 156 mm (6.1 inches) | 78% | very high |
| June Weather | 24°C (75°F) | 141 mm (5.6 inches) | 81% | extreme |
| July Weather | 25°C (78°F) | 73 mm (2.9 inches) | 79% | very high |
| August Weather | 24°C (75°F) | 69 mm (2.7 inches) | 77% | very high |
| September Weather | 21°C (69°F) | 109 mm (4.3 inches) | 78% | very high |
| October Weather | 12°C (55°F) | 132 mm (5.2 inches) | 78% | high |
| November Weather | 4°C (40°F) | 50 mm (2.0 inches) | 87% | moderate |
| December Weather | 0°C (33°F) | 48 mm (1.9 inches) | 84% | low |