Pine Island, Minnesota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 1.6 °C (low) to 12.6 °C (high). Annual precipitation averages 883.4 Millimeters. Pine Island 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 Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -14.7 °C | -4.9 °C | 25.15 mm |
| February | -12.6 °C | -2.3 °C | 25.15 mm |
| March | -5.7 °C | 4.6 °C | 48.01 mm |
| April | 1.1 °C | 13.1 °C | 84.33 mm |
| May | 7.9 °C | 20 °C | 109.22 mm |
| June | 13.8 °C | 25.3 °C | 136.65 mm |
| July | 15.8 °C | 27.4 °C | 109.22 mm |
| August | 14.6 °C | 26.2 °C | 120.9 mm |
| September | 9.9 °C | 22.5 °C | 91.95 mm |
| October | 2.9 °C | 14.9 °C | 60.96 mm |
| November | -3.8 °C | 5.7 °C | 40.39 mm |
| December | -10.4 °C | -1.8 °C | 31.5 mm |
| Annual | 1.6 °C | 12.6 °C | 883.43 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| 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 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |