Princeton, British Columbia climate data is summarized below. Average annual temperatures range from 32.8 °F (low) to 55.5 °F (high). Annual precipitation averages 1.2 Inches. 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 | -22.4 °F | -18 °F | 0 in. |
| February | -21.3 °F | -16.2 °F | 0 in. |
| March | -19.7 °F | -13.4 °F | 25.4 in. |
| April | -18.1 °F | -10.5 °F | 50.8 in. |
| May | -15.7 °F | -7.3 °F | 76.2 in. |
| June | -13.7 °F | -5.6 °F | 25.4 in. |
| July | -12.2 °F | -2.7 °F | 254 in. |
| August | -12.7 °F | -2.8 °F | 101.6 in. |
| September | -14.9 °F | -5.7 °F | 76.2 in. |
| October | -17.3 °F | -10.3 °F | 76.2 in. |
| November | -19.9 °F | -15.3 °F | 25.4 in. |
| December | -22.5 °F | -18.4 °F | 25.4 in. |
| Annual | 32.8 °F | 55.5 °F | 1.15 in. |
| 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 : -10°F to -5°F |
| Current Drought Conditions | Moderate Drought |