Hagersville, Ontario climate data is summarized below. Average annual temperatures range from 39.2 °F (low) to 56.5 °F (high). Annual precipitation averages 25.1 Inches. Hagersville is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -22.3 °F | -18.2 °F | 406.4 in. |
| February | -23.2 °F | -18.5 °F | 381 in. |
| March | -19.9 °F | -14.6 °F | 1244.6 in. |
| April | -16.6 °F | -10.6 °F | 1447.8 in. |
| May | -13.2 °F | -6.7 °F | 1727.2 in. |
| June | -10.2 °F | -4 °F | 1905 in. |
| July | -8.9 °F | -2.6 °F | 2260.6 in. |
| August | -9.2 °F | -3.1 °F | 1955.8 in. |
| September | -11.4 °F | -5.4 °F | 1600.2 in. |
| October | -14.3 °F | -9.3 °F | 1346.2 in. |
| November | -17.6 °F | -13 °F | 1041.4 in. |
| December | -19.9 °F | -16.5 °F | 863.6 in. |
| Annual | 39.2 °F | 56.5 °F | 25.07 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Normal |