Spring Lake, Indiana has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 42.8 °F (low) to 62 °F (high). Annual precipitation averages 45.6 Inches. Spring Lake is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 19.6 °F | 35.4 °F | 3.14 in. |
| February | 22.3 °F | 39.6 °F | 2.51 in. |
| March | 30.8 °F | 50.2 °F | 3.49 in. |
| April | 41.6 °F | 62.8 °F | 4.57 in. |
| May | 52.7 °F | 72.8 °F | 5.19 in. |
| June | 61.7 °F | 81.2 °F | 5.34 in. |
| July | 64.5 °F | 84.1 °F | 4.48 in. |
| August | 62.8 °F | 83.2 °F | 3.47 in. |
| September | 55.1 °F | 77.7 °F | 3.34 in. |
| October | 43.8 °F | 65.3 °F | 3.29 in. |
| November | 33.4 °F | 51.5 °F | 3.53 in. |
| December | 24.9 °F | 39.8 °F | 3.22 in. |
| Annual | 42.8 °F | 62 °F | 45.57 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |