Starbuck, Minnesota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 32.8 °F (low) to 53.5 °F (high). Annual precipitation averages 26.6 Inches. Starbuck 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 | 2.1 °F | 20.3 °F | 0.61 in. |
| February | 5.6 °F | 25.0 °F | 0.58 in. |
| March | 18.7 °F | 37.5 °F | 1.16 in. |
| April | 32.2 °F | 54.8 °F | 2.19 in. |
| May | 45.3 °F | 68.4 °F | 3.12 in. |
| June | 55.9 °F | 77.5 °F | 4.34 in. |
| July | 60.2 °F | 81.9 °F | 3.99 in. |
| August | 57.3 °F | 80.1 °F | 3.63 in. |
| September | 48.8 °F | 72.5 °F | 2.73 in. |
| October | 35.8 °F | 57.7 °F | 2.49 in. |
| November | 22.3 °F | 39.9 °F | 1.08 in. |
| December | 9.3 °F | 26.0 °F | 0.69 in. |
| Annual | 32.8 °F | 53.5 °F | 26.61 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 4b : -25°F to -20°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |