Burns Harbor, Indiana has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 42.4 °F (low) to 59.2 °F (high). Annual precipitation averages 39.5 Inches. Burns Harbor is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 18.5 °F | 32.6 °F | 2.41 in. |
| February | 21.3 °F | 36.1 °F | 2.17 in. |
| March | 29.7 °F | 46.3 °F | 2.23 in. |
| April | 39.5 °F | 58.0 °F | 3.54 in. |
| May | 49.9 °F | 69.1 °F | 4.13 in. |
| June | 59.9 °F | 78.3 °F | 4.51 in. |
| July | 64.9 °F | 82.4 °F | 4.08 in. |
| August | 63.8 °F | 81.1 °F | 3.88 in. |
| September | 56.4 °F | 75.4 °F | 3.56 in. |
| October | 45.1 °F | 63.3 °F | 3.96 in. |
| November | 34.8 °F | 49.6 °F | 2.79 in. |
| December | 24.7 °F | 37.7 °F | 2.23 in. |
| Annual | 42.4 °F | 59.2 °F | 39.49 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| 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 |