Rochester, Indiana has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 41 °F (low) to 60.3 °F (high). Annual precipitation averages 40.1 Inches. Rochester 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 | 17.7 °F | 32.6 °F | 2.7 in. |
| February | 20.2 °F | 36.6 °F | 2.17 in. |
| March | 28.7 °F | 47.7 °F | 2.58 in. |
| April | 38.9 °F | 60.4 °F | 3.72 in. |
| May | 50.3 °F | 71.6 °F | 4.29 in. |
| June | 60.1 °F | 80.8 °F | 4.48 in. |
| July | 63.1 °F | 83.8 °F | 4.41 in. |
| August | 61.3 °F | 82.2 °F | 3.98 in. |
| September | 53.4 °F | 76.5 °F | 3.23 in. |
| October | 42.3 °F | 64.0 °F | 3.14 in. |
| November | 32.4 °F | 49.3 °F | 3.05 in. |
| December | 23.6 °F | 37.5 °F | 2.38 in. |
| Annual | 41 °F | 60.3 °F | 40.13 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 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 |