Fifty Lakes, Minnesota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -0.7 °C (low) to 10.6 °C (high). Annual precipitation averages 708.9 Millimeters. Fifty Lakes is located in USDA Plant Hardiness Zone 4a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -18.2 °C | -7.4 °C | 18.54 mm |
| February | -16.6 °C | -4.2 °C | 19.3 mm |
| March | -9.1 °C | 2.9 °C | 34.04 mm |
| April | -1.3 °C | 10.9 °C | 52.83 mm |
| May | 6.1 °C | 18.4 °C | 88.65 mm |
| June | 12 °C | 23.7 °C | 104.14 mm |
| July | 14.6 °C | 26.3 °C | 104.65 mm |
| August | 13.1 °C | 25.2 °C | 84.07 mm |
| September | 8.3 °C | 20.4 °C | 75.44 mm |
| October | 1.5 °C | 12.2 °C | 71.12 mm |
| November | -5.7 °C | 3 °C | 32.77 mm |
| December | -13.3 °C | -4.4 °C | 23.37 mm |
| Annual | -0.7 °C | 10.6 °C | 708.92 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 4a : -34.4°C to -31.7°C |
| Plant Hardiness Zone - 2012 | Zone 3b : -37.2°C to -34.4°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |