Orangeville, Ontario climate data is summarized below. Average annual temperatures range from 1.8 °C (low) to 11.2 °C (high). Annual precipitation averages 704 Millimeters. Orangeville is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -10.66 °C | -3.5 °C | 5 mm |
| February | -11.88 °C | -3.92 °C | 0 mm |
| March | -6.3 °C | 2.85 °C | 29 mm |
| April | 0.01 °C | 10.66 °C | 61 mm |
| May | 6.37 °C | 18.13 °C | 105 mm |
| June | 11.46 °C | 22.45 °C | 107 mm |
| July | 13.95 °C | 25.02 °C | 106 mm |
| August | 13.22 °C | 24.11 °C | 115 mm |
| September | 9.4 °C | 19.98 °C | 64 mm |
| October | 4.26 °C | 12.9 °C | 56 mm |
| November | -1.45 °C | 6.1 °C | 34 mm |
| December | -6.62 °C | -0.68 °C | 22 mm |
| Annual | 1.8 °C | 11.2 °C | 704 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Normal |