St. George's, Newfoundland and Labrador climate data is summarized below. Average annual temperatures range from 33.6 °F (low) to 44.8 °F (high). Annual precipitation averages 36.1 Inches. St. George's 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -23 °F | -19.7 °F | 863.6 in. |
| February | -23.4 °F | -20 °F | 711.2 in. |
| March | -22.4 °F | -19 °F | 1066.8 in. |
| April | -19.4 °F | -16.2 °F | 1498.6 in. |
| May | -16.5 °F | -12.7 °F | 1930.4 in. |
| June | -13.9 °F | -9.7 °F | 1625.6 in. |
| July | -11.3 °F | -7 °F | 2209.8 in. |
| August | -10.9 °F | -6.8 °F | 2819.4 in. |
| September | -12.8 °F | -9.2 °F | 3022.6 in. |
| October | -15.3 °F | -12.5 °F | 2794 in. |
| November | -17.8 °F | -15.3 °F | 2895.6 in. |
| December | -20.7 °F | -18 °F | 1854.2 in. |
| Annual | 33.6 °F | 44.8 °F | 36.1 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Normal |