Elgin, Minnesota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 35.6 °F (low) to 54.4 °F (high). Annual precipitation averages 35.2 Inches. Elgin 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 | 6.6 °F | 23.2 °F | 1.03 in. |
| February | 10.2 °F | 27.7 °F | 1.01 in. |
| March | 22.6 °F | 40.2 °F | 1.97 in. |
| April | 34.8 °F | 55.1 °F | 3.55 in. |
| May | 46.9 °F | 67.7 °F | 4.47 in. |
| June | 57.3 °F | 77.5 °F | 5.34 in. |
| July | 61.1 °F | 81.0 °F | 4.35 in. |
| August | 58.7 °F | 78.8 °F | 4.44 in. |
| September | 50.5 °F | 72.1 °F | 3.7 in. |
| October | 38.0 °F | 58.5 °F | 2.42 in. |
| November | 25.9 °F | 42.2 °F | 1.76 in. |
| December | 14.0 °F | 28.9 °F | 1.17 in. |
| Annual | 35.6 °F | 54.4 °F | 35.21 in. |
| 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 : -25°F to -20°F |
| Plant Hardiness Zone - 2012 | Zone 4b : -25°F to -20°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |