Rockfield, Indiana has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 41.7 °F (low) to 61.2 °F (high). Annual precipitation averages 40.6 Inches. Rockfield 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 | 18.1 °F | 33.4 °F | 2.59 in. |
| February | 20.9 °F | 37.4 °F | 2.12 in. |
| March | 29.8 °F | 49.0 °F | 2.84 in. |
| April | 40.2 °F | 62.0 °F | 3.88 in. |
| May | 51.4 °F | 72.9 °F | 4.34 in. |
| June | 60.7 °F | 81.4 °F | 4.82 in. |
| July | 63.5 °F | 84.0 °F | 4.67 in. |
| August | 61.6 °F | 82.6 °F | 3.72 in. |
| September | 54.0 °F | 77.6 °F | 3.09 in. |
| October | 42.8 °F | 65.0 °F | 3.04 in. |
| November | 32.9 °F | 50.4 °F | 3.07 in. |
| December | 24.0 °F | 38.3 °F | 2.39 in. |
| Annual | 41.7 °F | 61.2 °F | 40.57 in. |
| 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 : -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 |