| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F |
| 2012 Hardiness Zone: | Zone 5b: -15°F to -10°F |
| 1990 Hardiness Zone: | Zone 5a: -20F to -15F |
| Average First Frost Date: | Oct. 11 - Oct. 20 |
| Average Last Frost Date: | May 1 - May 10 |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers |
| Ecoregion: | 56a - Lake Country |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 46975 - Rochester, IN | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 15 | 18 | 28 | 38 | 49 | 59 | 62 | 60 | 52 | 41 | 32 | 21 | 40 |
| Avg Max Temp (°F) | 31 | 36 | 47 | 59 | 71 | 80 | 84 | 82 | 75 | 63 | 49 | 36 | 59 |
| Avg Precip (In.) | 2.02 | 1.73 | 2.7 | 3.72 | 4.11 | 4.17 | 3.84 | 3.73 | 3.37 | 2.89 | 3.4 | 2.76 | 38.43 |