Shafer, Minnesota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 0.9 °C (low) to 12.4 °C (high). Annual precipitation averages 813.1 Millimeters. Shafer is located in USDA Plant Hardiness Zone 4b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -15.7 °C | -5.1 °C | 22.61 mm |
| February | -13.9 °C | -2.2 °C | 22.86 mm |
| March | -6.9 °C | 4.7 °C | 35.05 mm |
| April | 0.3 °C | 12.9 °C | 72.39 mm |
| May | 7.4 °C | 20.1 °C | 102.36 mm |
| June | 13 °C | 25.3 °C | 110.24 mm |
| July | 15.4 °C | 27.6 °C | 111.25 mm |
| August | 14.2 °C | 26.5 °C | 101.6 mm |
| September | 9.7 °C | 22.2 °C | 89.15 mm |
| October | 2.8 °C | 14.3 °C | 74.42 mm |
| November | -4.2 °C | 5.3 °C | 41.15 mm |
| December | -11.4 °C | -2.3 °C | 29.97 mm |
| Annual | 0.9 °C | 12.4 °C | 813.05 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 4b : -31.7°C to -28.9°C |
| Plant Hardiness Zone - 2012 | Zone 4a : -34.4°C to -31.7°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |