Finland, Minnesota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -1.6 °C (low) to 9.4 °C (high). Annual precipitation averages 821.7 Millimeters. 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 | -17.3 °C | -6.8 °C | 39.88 mm |
| February | -16.2 °C | -4.2 °C | 29.97 mm |
| March | -9.8 °C | 2 °C | 40.64 mm |
| April | -2.5 °C | 8.2 °C | 69.85 mm |
| May | 3.8 °C | 15.6 °C | 84.84 mm |
| June | 9.3 °C | 21.2 °C | 100.33 mm |
| July | 12.3 °C | 24.9 °C | 95.5 mm |
| August | 11.7 °C | 23.7 °C | 79.25 mm |
| September | 7.3 °C | 18.9 °C | 91.69 mm |
| October | 1.2 °C | 11.1 °C | 87.12 mm |
| November | -5.9 °C | 2.4 °C | 59.94 mm |
| December | -13.1 °C | -4.2 °C | 42.67 mm |
| Annual | -1.6 °C | 9.4 °C | 821.68 mm |
| 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 : -31.7°C to -28.9°C |
| Plant Hardiness Zone - 2012 | Zone 4a : -34.4°C to -31.7°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |