Last updated: June 18, 2025
In October, the average temperature in Alliston, Canada hovers around 10°C (50°F). You can expect a chill in the air, with minimum temperatures dipping to -3°C (27°F) and highs reaching up to 28°C (83°F). During this month, the region experiences approximately 98 mm (3.9 in) of precipitation over 14 days, contributing to an average humidity of around 83%. Be prepared for a mix of weather conditions!
In October in Alliston, the average temperature is 10°C (50°F). Maximum temperatures can reach 28°C (83°F), while minimums can drop as low as -3°C (27°F). This diverse temperature range makes Alliston an ideal destination for travelers seeking a mix of seasonal experiences.
In Alliston in October, the precipitation amount reaches 98 mm (3.9 in) over a span of 14 days.
In Alliston in October, humidity is 83%. With an average temperature of 10°C (50°F), this humidity feels like a damp chill that clings to your skin, making outdoor exploration less comfortable and prompting visitors to seek cozy indoor activities.
In Alliston 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 Alliston.
UV Risk Categories
Weather in Alliston varies notably across the year, with each month offering distinct climate conditions. This page compares October’s weather to other months in Alliston, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -6°C (21°F) | 59 mm (2.3 inches) | 93% | low |
| February Weather | -5°C (23°F) | 62 mm (2.5 inches) | 94% | moderate |
| March Weather | -1°C (31°F) | 58 mm (2.3 inches) | 87% | moderate |
| April Weather | 5°C (42°F) | 102 mm (4.0 inches) | 82% | very high |
| May Weather | 13°C (55°F) | 99 mm (3.9 inches) | 74% | very high |
| June Weather | 18°C (65°F) | 94 mm (3.7 inches) | 68% | very high |
| July Weather | 21°C (71°F) | 90 mm (3.5 inches) | 67% | very high |
| August Weather | 20°C (69°F) | 96 mm (3.8 inches) | 67% | very high |
| September Weather | 16°C (61°F) | 68 mm (2.7 inches) | 74% | high |
| October Weather | 10°C (50°F) | 98 mm (3.9 inches) | 83% | moderate |
| November Weather | 2°C (36°F) | 76 mm (3.0 inches) | 89% | moderate |
| December Weather | -3°C (28°F) | 69 mm (2.7 inches) | 91% | low |