Whitestown, Indiana has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 42.5 °F (low) to 61.4 °F (high). Annual precipitation averages 43.1 Inches. Whitestown 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 19.1 °F | 34.6 °F | 2.95 in. |
| February | 21.8 °F | 38.7 °F | 2.49 in. |
| March | 30.6 °F | 49.5 °F | 3.22 in. |
| April | 41.3 °F | 62.3 °F | 4.39 in. |
| May | 52.4 °F | 72.6 °F | 4.64 in. |
| June | 61.4 °F | 80.8 °F | 5.16 in. |
| July | 64.4 °F | 83.6 °F | 4.31 in. |
| August | 62.6 °F | 82.5 °F | 3.11 in. |
| September | 55.0 °F | 77.4 °F | 3.28 in. |
| October | 43.6 °F | 65.3 °F | 3.13 in. |
| November | 33.2 °F | 50.8 °F | 3.42 in. |
| December | 24.4 °F | 39.1 °F | 2.95 in. |
| Annual | 42.5 °F | 61.4 °F | 43.05 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| 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 5b : -15°F to -10°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |