Harris, Minnesota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 32.7 °F (low) to 54 °F (high). Annual precipitation averages 31.3 Inches. Harris 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 | 2.7 °F | 22.4 °F | 0.76 in. |
| February | 6.2 °F | 27.8 °F | 0.78 in. |
| March | 18.7 °F | 40.4 °F | 1.49 in. |
| April | 31.6 °F | 54.6 °F | 2.8 in. |
| May | 44.3 °F | 67.8 °F | 3.91 in. |
| June | 54.4 °F | 77.0 °F | 4.43 in. |
| July | 59.0 °F | 81.4 °F | 4.28 in. |
| August | 56.5 °F | 79.4 °F | 4.01 in. |
| September | 48.3 °F | 71.5 °F | 3.29 in. |
| October | 36.1 °F | 57.3 °F | 2.87 in. |
| November | 23.6 °F | 41.0 °F | 1.6 in. |
| December | 10.6 °F | 27.5 °F | 1.09 in. |
| Annual | 32.7 °F | 54 °F | 31.31 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 |