Schreiber, Ontario climate data is summarized below. Average annual temperatures range from 28.9 °F (low) to 42.4 °F (high). Annual precipitation averages 22.3 Inches. Schreiber is located in USDA Plant Hardiness Zone 3a. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep.11 - Sep. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -27.9 °F | -23 °F | 0 in. |
| February | -28 °F | -22.4 °F | 0 in. |
| March | -23.8 °F | -18.5 °F | 0 in. |
| April | -19.5 °F | -15.2 °F | 533.4 in. |
| May | -16 °F | -11.8 °F | 2032 in. |
| June | -13.4 °F | -9.1 °F | 2311.4 in. |
| July | -11.7 °F | -7.9 °F | 2565.4 in. |
| August | -10.9 °F | -7.3 °F | 1854.2 in. |
| September | -12.8 °F | -9.3 °F | 2209.8 in. |
| October | -15.7 °F | -12.7 °F | 2006.6 in. |
| November | -19.6 °F | -16.5 °F | 863.6 in. |
| December | -25.3 °F | -21.2 °F | 0 in. |
| Annual | 28.9 °F | 42.4 °F | 22.29 in. |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 3a : -40°F to -35°F |
| Current Drought Conditions | Normal |