Pembroke, Ontario climate data is summarized below. Average annual temperatures range from 0.3 °C (low) to 11.2 °C (high). Annual precipitation averages 641 Millimeters. Pembroke is located in USDA Plant Hardiness Zone 4b. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -15.6 °C | -5.69 °C | 0 mm |
| February | -15.47 °C | -4.75 °C | 0 mm |
| March | -8.84 °C | 2.09 °C | 22 mm |
| April | -0.21 °C | 11.45 °C | 62 mm |
| May | 6.26 °C | 19.45 °C | 75 mm |
| June | 11.37 °C | 23.92 °C | 78 mm |
| July | 13.88 °C | 26.18 °C | 104 mm |
| August | 13.2 °C | 25.05 °C | 89 mm |
| September | 8.53 °C | 20.39 °C | 81 mm |
| October | 3.44 °C | 12.86 °C | 81 mm |
| November | -2.52 °C | 5.61 °C | 45 mm |
| December | -10.51 °C | -2.77 °C | 4 mm |
| Annual | 0.3 °C | 11.2 °C | 641 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Normal |