Garfield, Minnesota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 32.7 °F (low) to 51.3 °F (high). Annual precipitation averages 26.6 Inches. Garfield 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 | 1.3 °F | 18.6 °F | 0.72 in. |
| February | 4.9 °F | 23.6 °F | 0.62 in. |
| March | 17.3 °F | 35.9 °F | 1.13 in. |
| April | 31.8 °F | 52.1 °F | 2.06 in. |
| May | 45.4 °F | 65.7 °F | 3.2 in. |
| June | 56.0 °F | 75.2 °F | 4.34 in. |
| July | 60.7 °F | 79.8 °F | 4.12 in. |
| August | 58.0 °F | 78.0 °F | 3.41 in. |
| September | 49.3 °F | 69.9 °F | 2.62 in. |
| October | 36.0 °F | 54.7 °F | 2.55 in. |
| November | 22.6 °F | 37.9 °F | 0.99 in. |
| December | 9.5 °F | 24.6 °F | 0.79 in. |
| Annual | 32.7 °F | 51.3 °F | 26.55 in. |
| 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 : -25°F to -20°F |
| Plant Hardiness Zone - 2012 | Zone 4a : -30°F to -25°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |