Bird Island, Minnesota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 1.2 °C (low) to 12.3 °C (high). Annual precipitation averages 744 Millimeters. Bird Island is located in USDA Plant Hardiness Zone 4b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -15.6 °C | -5.7 °C | 17.78 mm |
| February | -13.6 °C | -3.2 °C | 19.81 mm |
| March | -6.4 °C | 3.6 °C | 38.35 mm |
| April | 0.9 °C | 12.9 °C | 72.14 mm |
| May | 8 °C | 20.4 °C | 93.47 mm |
| June | 14.2 °C | 25.8 °C | 129.54 mm |
| July | 16.1 °C | 27.8 °C | 88.14 mm |
| August | 14.6 °C | 26.6 °C | 97.03 mm |
| September | 9.7 °C | 22.8 °C | 76.45 mm |
| October | 2.6 °C | 14.8 °C | 54.86 mm |
| November | -4.7 °C | 5.1 °C | 33.27 mm |
| December | -11.6 °C | -2.8 °C | 23.11 mm |
| Annual | 1.2 °C | 12.3 °C | 743.95 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| 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 | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |