Finland, Minnesota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 29.1 °F (low) to 48.9 °F (high). Annual precipitation averages 32.4 Inches. Finland is located in USDA Plant Hardiness Zone 4b. 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 | 0.8 °F | 19.7 °F | 1.57 in. |
| February | 2.8 °F | 24.4 °F | 1.18 in. |
| March | 14.4 °F | 35.6 °F | 1.6 in. |
| April | 27.5 °F | 46.8 °F | 2.75 in. |
| May | 38.9 °F | 60.1 °F | 3.34 in. |
| June | 48.7 °F | 70.1 °F | 3.95 in. |
| July | 54.2 °F | 76.8 °F | 3.76 in. |
| August | 53.0 °F | 74.7 °F | 3.12 in. |
| September | 45.2 °F | 66.1 °F | 3.61 in. |
| October | 34.1 °F | 52.0 °F | 3.43 in. |
| November | 21.3 °F | 36.4 °F | 2.36 in. |
| December | 8.5 °F | 24.4 °F | 1.68 in. |
| Annual | 29.1 °F | 48.9 °F | 32.35 in. |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 4b : -25°F to -20°F |
| Plant Hardiness Zone - 2012 | Zone 4a : -30°F to -25°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |