Lakefield, Ontario climate data is summarized below. Average annual temperatures range from 33.7 °F (low) to 53.4 °F (high). Annual precipitation averages 20 Inches. Lakefield is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -24.8 °F | -19.6 °F | 101.6 in. |
| February | -25.3 °F | -19.5 °F | 0 in. |
| March | -21.9 °F | -15.7 °F | 533.4 in. |
| April | -17.8 °F | -11.2 °F | 914.4 in. |
| May | -14.3 °F | -7 °F | 1473.2 in. |
| June | -11.5 °F | -4.7 °F | 2514.6 in. |
| July | -10.2 °F | -3.3 °F | 2260.6 in. |
| August | -10.6 °F | -3.9 °F | 2209.8 in. |
| September | -13.2 °F | -6.3 °F | 1244.6 in. |
| October | -15.8 °F | -10.4 °F | 889 in. |
| November | -19.2 °F | -14.2 °F | 508 in. |
| December | -22.3 °F | -18.2 °F | 254 in. |
| Annual | 33.7 °F | 53.4 °F | 20.01 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Normal |