Schreiber, Ontario climate data is summarized below. Average annual temperatures range from -1.7 °C (low) to 5.8 °C (high). Annual precipitation averages 566 Millimeters. 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 | -18.25 °C | -9.36 °C | 0 mm |
| February | -18.34 °C | -8.4 °C | 0 mm |
| March | -10.91 °C | -1.29 °C | 0 mm |
| April | -3.18 °C | 4.67 °C | 21 mm |
| May | 3.19 °C | 10.83 °C | 80 mm |
| June | 7.89 °C | 15.63 °C | 91 mm |
| July | 10.98 °C | 17.7 °C | 101 mm |
| August | 12.46 °C | 18.85 °C | 73 mm |
| September | 8.9 °C | 15.29 °C | 87 mm |
| October | 3.7 °C | 9.06 °C | 79 mm |
| November | -3.26 °C | 2.25 °C | 34 mm |
| December | -13.54 °C | -6.09 °C | 0 mm |
| Annual | -1.7 °C | 5.8 °C | 566 mm |
| 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°C to -37.2°C |
| Current Drought Conditions | Normal |