Spring Grove, Minnesota has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 35.7 °F (low) to 53.8 °F (high). Annual precipitation averages 36.6 Inches. Spring Grove is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 7.4 °F | 23.3 °F | 0.99 in. |
| February | 10.7 °F | 27.7 °F | 0.93 in. |
| March | 23.1 °F | 40.6 °F | 1.62 in. |
| April | 34.6 °F | 54.6 °F | 4.04 in. |
| May | 46.6 °F | 66.5 °F | 4.63 in. |
| June | 57.3 °F | 76.0 °F | 6.14 in. |
| July | 60.9 °F | 79.5 °F | 4.33 in. |
| August | 58.4 °F | 77.6 °F | 4.45 in. |
| September | 50.1 °F | 71.1 °F | 3.72 in. |
| October | 38.2 °F | 57.6 °F | 2.73 in. |
| November | 26.1 °F | 42.0 °F | 1.78 in. |
| December | 14.5 °F | 29.1 °F | 1.21 in. |
| Annual | 35.7 °F | 53.8 °F | 36.57 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| 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 | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |