Kearney, Ontario climate data is summarized below. Average annual temperatures range from -0.5 °C (low) to 10.4 °C (high). Annual precipitation averages 674 Millimeters. Kearney is located in USDA Plant Hardiness Zone 4b. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -15.49 °C | -5.36 °C | 0 mm |
| February | -16.27 °C | -5.06 °C | 0 mm |
| March | -8.99 °C | 1.61 °C | 21 mm |
| April | -1.64 °C | 9.82 °C | 63 mm |
| May | 5.13 °C | 18.3 °C | 77 mm |
| June | 10.45 °C | 22.77 °C | 82 mm |
| July | 12.53 °C | 24.79 °C | 99 mm |
| August | 12 °C | 23.91 °C | 89 mm |
| September | 7.41 °C | 19.32 °C | 87 mm |
| October | 2.69 °C | 11.98 °C | 103 mm |
| November | -3.5 °C | 4.88 °C | 53 mm |
| December | -10.81 °C | -2.69 °C | 0 mm |
| Annual | -0.5 °C | 10.4 °C | 674 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Normal |