Effie, Minnesota has a Humid Continental Mild Summer With Dry Winters climate (Köppen classification: Dwb). Average annual temperatures range from 27.1 °F (low) to 49.7 °F (high). Annual precipitation averages 26.5 Inches. Effie is located in USDA Plant Hardiness Zone 3b. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep.11 - Sep. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5.0 °F | 17.2 °F | 0.73 in. |
| February | -2.3 °F | 23.8 °F | 0.63 in. |
| March | 11.6 °F | 37.0 °F | 1.03 in. |
| April | 26.5 °F | 50.7 °F | 1.89 in. |
| May | 39.3 °F | 64.5 °F | 3.09 in. |
| June | 49.6 °F | 72.9 °F | 4.48 in. |
| July | 54.0 °F | 77.4 °F | 4.01 in. |
| August | 51.3 °F | 75.8 °F | 3.07 in. |
| September | 43.8 °F | 67.0 °F | 2.97 in. |
| October | 32.6 °F | 52.3 °F | 2.36 in. |
| November | 19.5 °F | 35.5 °F | 1.36 in. |
| December | 4.2 °F | 22.3 °F | 0.87 in. |
| Annual | 27.1 °F | 49.7 °F | 26.49 in. |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 3b : -35°F to -30°F |
| Plant Hardiness Zone - 2012 | Zone 3b : -35°F to -30°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dwb - Humid Continental Mild Summer With Dry Winters |