Last updated: June 18, 2025
In October, the average temperature in Mississauga, Canada hovers around 12°C (53°F), with nighttime lows dipping to a chilly 0°C (32°F) and daytime highs reaching up to a warm 28°C (82°F). Expect 108 mm (4.3 in) of precipitation over roughly 13 days, contributing to the region's high average humidity of 83%. Be prepared for a mix of cool breezes and occasional rain!
In October in Mississauga, the average temperature is 12°C (53°F). Maximums can reach 28°C (82°F), while minimums can drop as low as 0°C (32°F). This variability makes it essential to pack layers for comfort during your travels.
In Mississauga in October, the precipitation amount is 108 mm (4.3 in), occurring over a span of 13 days.
In Mississauga in October humidity is 83%. With an average temperature of 12°C (53°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities less enjoyable and necessitating layers to stay comfortable while traveling.
In Mississauga in October, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Mississauga.
UV Risk Categories
Weather in Mississauga varies notably across the year, with each month offering distinct climate conditions. This page compares October’s weather to other months in Mississauga, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -3°C (26°F) | 73 mm (2.9 inches) | 91% | low |
| February Weather | -3°C (27°F) | 80 mm (3.2 inches) | 91% | moderate |
| March Weather | 1°C (34°F) | 64 mm (2.5 inches) | 88% | moderate |
| April Weather | 6°C (43°F) | 110 mm (4.3 inches) | 88% | very high |
| May Weather | 12°C (54°F) | 98 mm (3.9 inches) | 82% | very high |
| June Weather | 18°C (65°F) | 88 mm (3.5 inches) | 79% | very high |
| July Weather | 22°C (72°F) | 75 mm (2.9 inches) | 77% | very high |
| August Weather | 22°C (71°F) | 77 mm (3.0 inches) | 72% | very high |
| September Weather | 18°C (64°F) | 63 mm (2.5 inches) | 76% | high |
| October Weather | 12°C (53°F) | 108 mm (4.3 inches) | 83% | moderate |
| November Weather | 4°C (39°F) | 79 mm (3.1 inches) | 88% | moderate |
| December Weather | 0°C (32°F) | 78 mm (3.1 inches) | 87% | low |