Last updated: March 2, 2024
The weather in Harriston, Canada, during October is characterized by an average temperature of 9°C (49°F). Highs can soar to 25°C (76°F), while lows may dip to -2°C (28°F). Typically, the humidity level in Harriston throughout October hovers around 84%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In October, Harriston averages 111 mm (4.4 inches) of rainfall, typically over the course of 15 rainy days. The month enjoys an average of 10 hours 56 minutes of daylight, with the sun shining for approximately 6 hours 18 minutes each day. Additionally, there is a 23% probability of sunny days during this period.
Precipitation
Rainy days
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Chance of sun
In October, the UV Index in Harriston reaches a maximum of 5, indicating a level of Moderate exposure. The most intense UV radiation typically occurs between 12:00 and 14:00, during which unprotected skin may burn in as little as 30 minutes.
| 07:00 | 08:00 | 09:00 | 10:00 | 11:00 | 12:00 | 13:00 | 14:00 | 15:00 | 16:00 | 17:00 | 18:00 | 19:00 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UVI | 0 | 1 | 1 | 2 | 4 | 5 | 5 | 5 | 4 | 3 | 1 | 1 | 0 |
| Exposure | Low | Moderate | Low | ||||||||||
| Time to burn | 45 min | 30 min | 45 min | ||||||||||