Cambridge, Ontario climate data is summarized below. Average annual temperatures range from 3 °C (low) to 12.9 °C (high). Annual precipitation averages 872 Millimeters. Cambridge is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -9.29 °C | -1.98 °C | 11 mm |
| February | -10.72 °C | -2.3 °C | 14 mm |
| March | -4.87 °C | 4.88 °C | 52 mm |
| April | 1.43 °C | 12.48 °C | 83 mm |
| May | 7.73 °C | 19.59 °C | 102 mm |
| June | 12.84 °C | 24.2 °C | 114 mm |
| July | 14.96 °C | 26.7 °C | 126 mm |
| August | 14.29 °C | 25.8 °C | 112 mm |
| September | 10.22 °C | 21.62 °C | 91 mm |
| October | 5.1 °C | 14.59 °C | 75 mm |
| November | -0.49 °C | 7.65 °C | 50 mm |
| December | -5.25 °C | 1.02 °C | 42 mm |
| Annual | 3 °C | 12.9 °C | 872 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Normal |