Spring Lake, Indiana has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 6 °C (low) to 16.6 °C (high). Annual precipitation averages 1157.5 Millimeters. 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 | -6.9 °C | 1.9 °C | 79.76 mm |
| February | -5.4 °C | 4.2 °C | 63.75 mm |
| March | -0.7 °C | 10.1 °C | 88.65 mm |
| April | 5.3 °C | 17.1 °C | 116.08 mm |
| May | 11.5 °C | 22.7 °C | 131.83 mm |
| June | 16.5 °C | 27.3 °C | 135.64 mm |
| July | 18.1 °C | 28.9 °C | 113.79 mm |
| August | 17.1 °C | 28.4 °C | 88.14 mm |
| September | 12.8 °C | 25.4 °C | 84.84 mm |
| October | 6.6 °C | 18.5 °C | 83.57 mm |
| November | 0.8 °C | 10.8 °C | 89.66 mm |
| December | -3.9 °C | 4.3 °C | 81.79 mm |
| Annual | 6 °C | 16.6 °C | 1157.5 mm |
| 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 : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |