Last updated: June 24, 2025
In Kootenai, United States, the average temperature in September hovers around 16°C (61°F). Expect a range from a chilly 2°C (36°F) to a warm 32°C (90°F), offering a little something for everyone. During this month, precipitation totals 58 mm (2.3 in) over approximately 7 days, contributing to an average humidity of 71%. Stay prepared for a delightful mix of weather!
In September in Kootenai, the average temperature is 16°C (61°F). Maximums can reach 32°C (90°F), while minimums can drop as low as 2°C (36°F). This diverse temperature range makes it essential for travelers to pack both light clothing for daytime excursions and warmer layers for cooler evenings.
In Kootenai in September, the precipitation amount is 58 mm (2.3 in) over the course of 7 days.
In Kootenai in September humidity is 71%. With an average temperature of 16°C (61°F), this humidity feels like walking through a warm, damp blanket, making travel slightly uncomfortable but still enjoyable for those who appreciate mild weather.
In Kootenai 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 Kootenai.
UV Risk Categories
Weather in Kootenai varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Kootenai, focusing on differences in temperature, rainfall, humidity, and UV levels.
Temperature | Precipitation | Humidity | UV | |
---|---|---|---|---|
January Weather | 0°C (32°F) | 118 mm (4.6 inches) | 95% | low |
February Weather | -2°C (29°F) | 115 mm (4.5 inches) | 93% | moderate |
March Weather | 2°C (36°F) | 89 mm (3.5 inches) | 91% | high |
April Weather | 6°C (43°F) | 83 mm (3.3 inches) | 88% | high |
May Weather | 11°C (53°F) | 59 mm (2.3 inches) | 83% | very high |
June Weather | 16°C (60°F) | 36 mm (1.4 inches) | 80% | very high |
July Weather | 21°C (70°F) | 8 mm (0.3 inches) | 82% | very high |
August Weather | 22°C (71°F) | 27 mm (1.1 inches) | 71% | very high |
September Weather | 16°C (61°F) | 58 mm (2.3 inches) | 71% | high |
October Weather | 9°C (48°F) | 106 mm (4.2 inches) | 85% | moderate |
November Weather | 4°C (39°F) | 132 mm (5.2 inches) | 90% | moderate |
December Weather | 1°C (33°F) | 145 mm (5.7 inches) | 96% | low |