Last updated: June 24, 2025
In June, the average temperature in Montreal, United States is a comfortable 18°C (65°F). However, be prepared for some variability, as temperatures can range from a chilly 3°C (38°F) to a warm 35°C (95°F). You'll also want to pack an umbrella, as the area sees an average precipitation of 111 mm (4.4 in) over approximately 11 days. With an average humidity of 71%, staying hydrated will be essential during your visit!
In June in Montreal, the average temperature is 18°C (65°F). Maximums can reach 35°C (95°F), while minimums can drop to as low as 3°C (38°F). This variation in temperature makes it essential for travelers to pack both light and warm clothing to ensure comfort during their visit.
In Montreal in June, the precipitation amount is 111 mm (4.4 in), occurring over the course of 11 days.
In Montreal in June humidity is 71%. With an average temperature of 18°C (65°F), this humidity feels like a warm embrace, making it a bit sticky and muggy, which can be slightly uncomfortable for traveling, especially if you're engaging in outdoor activities or exploring the city on foot.
In Montreal in June, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Montreal.
UV Risk Categories
Weather in Montreal varies notably across the year, with each month offering distinct climate conditions. This page compares June’s weather to other months in Montreal, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -9°C (16°F) | 39 mm (1.5 inches) | 93% | low |
| February Weather | -9°C (16°F) | 52 mm (2.1 inches) | 93% | moderate |
| March Weather | -2°C (28°F) | 52 mm (2.0 inches) | 89% | moderate |
| April Weather | 3°C (38°F) | 87 mm (3.4 inches) | 85% | very high |
| May Weather | 12°C (54°F) | 87 mm (3.4 inches) | 76% | very high |
| June Weather | 18°C (65°F) | 111 mm (4.4 inches) | 71% | very high |
| July Weather | 21°C (70°F) | 87 mm (3.4 inches) | 70% | very high |
| August Weather | 19°C (67°F) | 110 mm (4.3 inches) | 71% | very high |
| September Weather | 15°C (60°F) | 94 mm (3.7 inches) | 73% | high |
| October Weather | 8°C (46°F) | 112 mm (4.4 inches) | 81% | moderate |
| November Weather | -1°C (31°F) | 61 mm (2.4 inches) | 87% | moderate |
| December Weather | -6°C (22°F) | 74 mm (2.9 inches) | 91% | low |