Fountain, Minnesota has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 1.9 °C (low) to 11.9 °C (high). Annual precipitation averages 910.8 Millimeters. Fountain is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -14 °C | -5.3 °C | 26.16 mm |
| February | -12 °C | -2.8 °C | 27.94 mm |
| March | -5.3 °C | 4.1 °C | 47.24 mm |
| April | 1.4 °C | 12.3 °C | 93.98 mm |
| May | 8.3 °C | 19.1 °C | 115.06 mm |
| June | 14.1 °C | 24.6 °C | 147.32 mm |
| July | 16 °C | 26.5 °C | 105.66 mm |
| August | 14.6 °C | 25.3 °C | 108.97 mm |
| September | 9.9 °C | 21.7 °C | 93.47 mm |
| October | 3.2 °C | 14.2 °C | 67.06 mm |
| November | -3.4 °C | 5.4 °C | 44.2 mm |
| December | -9.9 °C | -1.9 °C | 33.78 mm |
| Annual | 1.9 °C | 11.9 °C | 910.84 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5a : -28.9°C to -26.1°C |
| Plant Hardiness Zone - 2012 | Zone 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |