Last updated: June 24, 2025
In September, the average temperature in Marlette, United States is a comfortable 18°C (64°F). However, be prepared for a range of temperatures, with minimums dropping to 0°C (33°F) and maximums reaching 34°C (94°F). Expect some rain, as the area typically sees 81 mm (3.2 in) of precipitation over about 10 days. With an average humidity of 80%, it’s a month that feels both lush and warm.
In September in Marlette, the average temperature is 18°C (64°F), with maximums reaching up to 34°C (94°F) and minimums dropping as low as 0°C (33°F). This varied climate makes it essential for travelers to pack for both warm and cool conditions.
In Marlette in September, the precipitation amount is 81 mm (3.2 in) over a span of 10 days.
In Marlette in September humidity is 80%. With an average temperature of 18°C (64°F), this humidity feels like a warm, damp blanket wrapping around you, making travel a bit more exhausting as the air thickens and the heat clings to your skin.
In Marlette 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 Marlette.
UV Risk Categories
Weather in Marlette varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Marlette, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -4°C (25°F) | 61 mm (2.4 inches) | 88% | low |
| February Weather | -3°C (26°F) | 66 mm (2.6 inches) | 87% | moderate |
| March Weather | 2°C (35°F) | 64 mm (2.5 inches) | 85% | moderate |
| April Weather | 7°C (45°F) | 96 mm (3.8 inches) | 86% | very high |
| May Weather | 14°C (58°F) | 100 mm (3.9 inches) | 80% | very high |
| June Weather | 20°C (68°F) | 102 mm (4.0 inches) | 80% | very high |
| July Weather | 23°C (73°F) | 84 mm (3.3 inches) | 80% | very high |
| August Weather | 21°C (71°F) | 90 mm (3.5 inches) | 80% | very high |
| September Weather | 18°C (64°F) | 81 mm (3.2 inches) | 80% | high |
| October Weather | 11°C (53°F) | 108 mm (4.3 inches) | 84% | moderate |
| November Weather | 3°C (38°F) | 67 mm (2.6 inches) | 89% | moderate |
| December Weather | -1°C (31°F) | 53 mm (2.1 inches) | 86% | low |