Shoals, Indiana has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 6.5 °C (low) to 18.7 °C (high). Annual precipitation averages 1263.1 Millimeters. Shoals is located in USDA Plant Hardiness Zone 6b. 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 | -5.6 °C | 4.2 °C | 90.17 mm |
| February | -4.2 °C | 6.8 °C | 78.49 mm |
| March | 0.3 °C | 12.6 °C | 113.28 mm |
| April | 5.8 °C | 19.2 °C | 133.6 mm |
| May | 11.9 °C | 24.5 °C | 151.89 mm |
| June | 16.7 °C | 28.8 °C | 126.24 mm |
| July | 18.3 °C | 30.6 °C | 113.54 mm |
| August | 17.1 °C | 30.2 °C | 72.64 mm |
| September | 12.9 °C | 27.1 °C | 99.57 mm |
| October | 6.4 °C | 20.6 °C | 88.14 mm |
| November | 0.9 °C | 12.9 °C | 101.6 mm |
| December | -3.1 °C | 6.8 °C | 93.98 mm |
| Annual | 6.5 °C | 18.7 °C | 1263.14 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 6b : -20.6°C to -17.8°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 |