Last updated: June 24, 2025
In Montreal, United States, the average temperature in April hovers around 3°C (38°F). Expect a wide range, with temperatures dipping as low as -15°C (5°F) and peaking at 26°C (79°F). Be prepared for some rain, as the area receives an average of 87 mm (3.4 in) over 12 days. With an average humidity of 85%, it’s a month that certainly feels crisp and damp!
In April in Montreal, the average temperature is 3°C (38°F), with a maximum that can reach 26°C (79°F) and a minimum that can drop to -15°C (5°F). Travelers should be prepared for a wide range of temperatures, ensuring they pack both warm and lighter clothing for their stay.
In Montreal in April, the precipitation amount is 87 mm (3.4 in) over the course of 12 days.
In Montreal in April, humidity is 85%. With an average temperature of 3°C (38°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities uncomfortable and travel less enjoyable as you contend with the heavy, cold air surrounding you.
In Montreal in April, 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 Montreal.
UV Risk Categories
Weather in Montreal varies notably across the year, with each month offering distinct climate conditions. This page compares April’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 |