Fountain, Minnesota has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 35.4 °F (low) to 53.5 °F (high). Annual precipitation averages 35.9 Inches. 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 | 6.8 °F | 22.5 °F | 1.03 in. |
| February | 10.4 °F | 26.9 °F | 1.1 in. |
| March | 22.5 °F | 39.4 °F | 1.86 in. |
| April | 34.6 °F | 54.2 °F | 3.7 in. |
| May | 46.9 °F | 66.4 °F | 4.53 in. |
| June | 57.3 °F | 76.2 °F | 5.8 in. |
| July | 60.8 °F | 79.7 °F | 4.16 in. |
| August | 58.2 °F | 77.6 °F | 4.29 in. |
| September | 49.8 °F | 71.0 °F | 3.68 in. |
| October | 37.8 °F | 57.6 °F | 2.64 in. |
| November | 25.8 °F | 41.7 °F | 1.74 in. |
| December | 14.2 °F | 28.5 °F | 1.33 in. |
| Annual | 35.4 °F | 53.5 °F | 35.86 in. |
| 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 : -20°F to -15°F |
| Plant Hardiness Zone - 2012 | Zone 4b : -25°F to -20°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |