Last updated: June 24, 2025
In September, the average temperature in Columbia Falls, United States hovers around 16°C (61°F), with a minimum dropping to 3°C (38°F) and a maximum peaking at 27°C (81°F). Expect moderate precipitation of about 93 mm (3.7 in) over 8 days, coupled with an average humidity of 77%, providing a refreshing yet humid atmosphere.
In September in Columbia Falls, the average temperature is 16°C (61°F), with maximums reaching 27°C (81°F) and minimums dropping as low as 3°C (38°F). It's a great time to visit for those who enjoy mild weather and outdoor activities!
In Columbia Falls in September, the total precipitation amount is 93 mm (3.7 in) over the course of 8 days.
In Columbia Falls in September humidity is 77%. With an average temperature of 16°C (61°F), this humidity feels like a slight heaviness in the air, making every step feel a touch more effortful while traveling. The dampness clings to your skin, adding a layer of discomfort, yet the mild temperature invites you to explore the surroundings, blending the challenge of the humidity with an opportunity for a refreshing adventure.
In Columbia Falls in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Columbia Falls.
UV Risk Categories
Weather in Columbia Falls varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Columbia Falls, focusing on differences in temperature, rainfall, humidity, and UV levels.
Temperature | Precipitation | Humidity | UV | |
---|---|---|---|---|
January Weather | -4°C (25°F) | 105 mm (4.1 inches) | 88% | low |
February Weather | -4°C (26°F) | 96 mm (3.8 inches) | 88% | moderate |
March Weather | 0°C (32°F) | 80 mm (3.1 inches) | 85% | moderate |
April Weather | 6°C (42°F) | 138 mm (5.4 inches) | 81% | high |
May Weather | 11°C (52°F) | 110 mm (4.3 inches) | 76% | very high |
June Weather | 16°C (61°F) | 98 mm (3.9 inches) | 74% | very high |
July Weather | 19°C (66°F) | 88 mm (3.5 inches) | 74% | very high |
August Weather | 19°C (67°F) | 80 mm (3.2 inches) | 74% | very high |
September Weather | 16°C (61°F) | 93 mm (3.7 inches) | 77% | high |
October Weather | 10°C (51°F) | 119 mm (4.7 inches) | 82% | moderate |
November Weather | 4°C (39°F) | 138 mm (5.4 inches) | 85% | moderate |
December Weather | -2°C (29°F) | 141 mm (5.5 inches) | 84% | low |