Last updated: June 18, 2025
In Lac-Megantic, Canada, the average temperature in September hovers around 13°C (56°F). Expect a range where minimums can dip to -2°C (28°F) and maximums can reach up to 28°C (83°F). The region experiences 79 mm (3.1 in) of precipitation over approximately 10 days, accompanied by an average humidity of 77%. Whether you're planning a visit or simply curious about the climate, be prepared for a mix of cool and warm days!
In September in Lac-Megantic, the average temperature is 13°C (56°F). Maximum temperatures can reach 28°C (83°F), while minimums can drop as low as -2°C (28°F). This diverse temperature range makes Lac-Megantic an ideal destination for travelers looking to experience varying climates and activities throughout the month.
In Lac-Megantic in September, the precipitation amount is 79 mm (3.1 in) over a span of 10 days.
In Lac-Megantic in September humidity is 77%. With average temperature 13°C (56°F), this humidity feels like a damp blanket wrapping around you, making outdoor activities sweaty and uncomfortable.
In Lac-Megantic 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 Lac-Megantic.
UV Risk Categories
Weather in Lac-Megantic varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Lac-Megantic, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -10°C (15°F) | 92 mm (3.6 inches) | 91% | low |
| February Weather | -8°C (17°F) | 87 mm (3.4 inches) | 89% | moderate |
| March Weather | -4°C (24°F) | 84 mm (3.3 inches) | 85% | moderate |
| April Weather | 3°C (38°F) | 121 mm (4.7 inches) | 84% | high |
| May Weather | 10°C (51°F) | 111 mm (4.4 inches) | 78% | very high |
| June Weather | 15°C (60°F) | 115 mm (4.5 inches) | 72% | very high |
| July Weather | 18°C (65°F) | 114 mm (4.5 inches) | 75% | very high |
| August Weather | 17°C (64°F) | 114 mm (4.5 inches) | 74% | very high |
| September Weather | 13°C (56°F) | 79 mm (3.1 inches) | 77% | high |
| October Weather | 7°C (45°F) | 136 mm (5.4 inches) | 85% | moderate |
| November Weather | -1°C (30°F) | 112 mm (4.4 inches) | 86% | moderate |
| December Weather | -7°C (20°F) | 92 mm (3.6 inches) | 85% | low |