| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F |
| 1990 Hardiness Zone: | Zone 1b: -15F to -10F |
| 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: | 55b - Loamy High Lime Till Plains |
| Heat Zone Days: | 8 - 14 days Over 86°F |
Annual Climate Data for ZIP Code 45344 - New Carlisle, OH | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 19 | 22 | 31 | 40 | 51 | 60 | 64 | 61 | 54 | 43 | 34 | 24 | 42 |
| Avg Max Temp (°F) | 34 | 39 | 50 | 62 | 72 | 81 | 85 | 83 | 77 | 65 | 51 | 39 | 62 |
| Avg Precip (In.) | 2.5 | 2.24 | 2.91 | 3.74 | 4.2 | 4.32 | 4.08 | 3.69 | 2.87 | 2.68 | 3.15 | 2.81 | 39.2 |