Princeton, British Columbia climate data is summarized below. Average annual temperatures range from 0.5 °C (low) to 13.1 °C (high). Annual precipitation averages 29 Millimeters. Princeton is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep.11 - Sep. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -8.29 °C | -0.39 °C | 0 mm |
| February | -6.25 °C | 2.82 °C | 0 mm |
| March | -3.53 °C | 7.88 °C | 1 mm |
| April | -0.49 °C | 13.07 °C | 2 mm |
| May | 3.77 °C | 18.87 °C | 3 mm |
| June | 7.28 °C | 21.91 °C | 1 mm |
| July | 9.97 °C | 27.22 °C | 10 mm |
| August | 9.23 °C | 26.98 °C | 4 mm |
| September | 5.17 °C | 21.83 °C | 3 mm |
| October | 0.78 °C | 13.39 °C | 3 mm |
| November | -3.85 °C | 4.38 °C | 1 mm |
| December | -8.41 °C | -1.06 °C | 1 mm |
| Annual | 0.5 °C | 13.1 °C | 29 mm |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Moderate Drought |