Last updated: June 24, 2025
In Le Mars, United States, the average temperature in September is a pleasant 19°C (67°F). However, be prepared for temperature fluctuations, with a minimum of 3°C (38°F) and a maximum reaching up to 34°C (93°F). Expect some rain, as precipitation averages 105 mm (4.1 in) over about 8 days during the month, and keep in mind that the average humidity is quite high at 75%. Stay comfortable and enjoy your time!
In September in Le Mars, the average temperature is 19°C (67°F), with maximums reaching 34°C (93°F) and minimums dropping as low as 3°C (38°F). This climate makes it an ideal destination for travelers seeking a mix of warm days and cooler evenings.
In Le Mars in September, the precipitation amount is 105 mm (4.1 in) over the course of 8 days.
In Le Mars in September humidity is 75%. With an average temperature of 19°C (67°F), this humidity feels like a warm embrace, making travel invigorating yet slightly sticky, as you navigate through the vibrant streets or scenic landscapes.
In Le Mars 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 Le Mars.
UV Risk Categories
Weather in Le Mars varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Le Mars, focusing on differences in temperature, rainfall, humidity, and UV levels.
Temperature | Precipitation | Humidity | UV | |
---|---|---|---|---|
January Weather | -6°C (22°F) | 27 mm (1.1 inches) | 80% | low |
February Weather | -6°C (22°F) | 30 mm (1.2 inches) | 84% | moderate |
March Weather | 3°C (37°F) | 76 mm (3.0 inches) | 75% | moderate |
April Weather | 8°C (47°F) | 87 mm (3.4 inches) | 79% | very high |
May Weather | 16°C (60°F) | 142 mm (5.6 inches) | 74% | very high |
June Weather | 23°C (74°F) | 105 mm (4.1 inches) | 81% | extreme |
July Weather | 24°C (76°F) | 70 mm (2.7 inches) | 82% | very high |
August Weather | 22°C (73°F) | 105 mm (4.1 inches) | 80% | very high |
September Weather | 19°C (67°F) | 105 mm (4.1 inches) | 75% | very high |
October Weather | 10°C (50°F) | 78 mm (3.1 inches) | 77% | moderate |
November Weather | 2°C (37°F) | 27 mm (1.1 inches) | 85% | moderate |
December Weather | -2°C (28°F) | 40 mm (1.6 inches) | 83% | moderate |