| 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: | 55a - Clayey High Lime Till Plains |
| Heat Zone Days: | 1 - 7 days Over 86°F |
Annual Climate Data for ZIP Code 46970 - Peru, 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) | 32 | 36 | 48 | 60 | 72 | 81 | 84 | 82 | 76 | 64 | 49 | 37 | 60 |
| Avg Precip (In.) | 2.11 | 1.85 | 2.81 | 3.53 | 4.05 | 4.19 | 4.05 | 3.87 | 3.21 | 2.81 | 3.31 | 2.82 | 38.63 |