Last updated: June 24, 2025
In September, the average temperature in Port Sanilac, United States hovers around 18°C (65°F), with temperatures ranging from a minimum of 11°C (52°F) to a maximum of 26°C (79°F). This month also sees 89 mm (3.5 in) of precipitation spread over 11 days, contributing to an average humidity of 80%. Prepare for a mix of pleasant warmth and occasional showers!
In September in Port Sanilac, the average temperature is 18°C (65°F), with maximums reaching 26°C (79°F) and minimums dipping as low as 11°C (52°F). This moderate climate makes it an ideal time for outdoor activities and exploring the local attractions.
In Port Sanilac in September, the precipitation amount is 89 mm (3.5 in) over a span of 11 days.
In Port Sanilac in September, humidity is 80%. With an average temperature of 18°C (65°F), this humidity feels like wandering through a warm, damp blanket, making every step slightly heavy and resulting in a constant sheen of sweat, which can be both refreshing and exhausting for travelers.
In Port Sanilac 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 Port Sanilac.
UV Risk Categories
Weather in Port Sanilac varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Port Sanilac, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -2°C (28°F) | 88 mm (3.5 inches) | 88% | low |
| February Weather | -3°C (27°F) | 87 mm (3.4 inches) | 87% | moderate |
| March Weather | 0°C (32°F) | 79 mm (3.1 inches) | 85% | moderate |
| April Weather | 3°C (38°F) | 113 mm (4.4 inches) | 86% | very high |
| May Weather | 7°C (45°F) | 100 mm (3.9 inches) | 80% | very high |
| June Weather | 14°C (58°F) | 77 mm (3.0 inches) | 80% | very high |
| July Weather | 20°C (68°F) | 71 mm (2.8 inches) | 80% | very high |
| August Weather | 21°C (70°F) | 82 mm (3.2 inches) | 80% | very high |
| September Weather | 18°C (65°F) | 89 mm (3.5 inches) | 80% | high |
| October Weather | 12°C (55°F) | 136 mm (5.3 inches) | 84% | moderate |
| November Weather | 5°C (41°F) | 99 mm (3.9 inches) | 89% | moderate |
| December Weather | 1°C (34°F) | 79 mm (3.1 inches) | 86% | low |