Santa Claus, Indiana has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 45.8 °F (low) to 66.8 °F (high). Annual precipitation averages 50.4 Inches. Santa Claus is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 24.5 °F | 41.7 °F | 3.64 in. |
| February | 26.9 °F | 46.5 °F | 3.44 in. |
| March | 34.8 °F | 56.3 °F | 4.66 in. |
| April | 44.7 °F | 67.9 °F | 5.21 in. |
| May | 54.9 °F | 76.6 °F | 5.49 in. |
| June | 63.5 °F | 84.3 °F | 4.83 in. |
| July | 66.9 °F | 87.3 °F | 4.5 in. |
| August | 64.9 °F | 86.8 °F | 3.09 in. |
| September | 57.5 °F | 81.4 °F | 3.7 in. |
| October | 46.1 °F | 70.0 °F | 3.64 in. |
| November | 35.8 °F | 56.5 °F | 4.08 in. |
| December | 28.7 °F | 45.9 °F | 4.14 in. |
| Annual | 45.8 °F | 66.8 °F | 50.42 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |