| 2023 Hardiness Zone: | Zone 6b: -5°F to 0°F Zone 7a: 0°F to 5°F |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F |
| 1990 Hardiness Zone: | Zone 1b: -15F to -10F |
| Average First Frost Date: | Oct. 21 - Oct. 31 |
| Average Last Frost Date: | Apr. 11 - Apr. 20 |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate |
| Ecoregion: | 39d - Central Plateau |
| Heat Zone Days: | 46 - 60 days Over 86°F |
Annual Climate Data for ZIP Code 65667 - Hartville, MO | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 20 | 25 | 34 | 43 | 53 | 61 | 66 | 64 | 56 | 45 | 34 | 24 | 44 |
| Avg Max Temp (°F) | 41 | 47 | 57 | 67 | 75 | 83 | 88 | 88 | 80 | 70 | 55 | 44 | 66 |
| Avg Precip (In.) | 2.13 | 2.36 | 3.9 | 4.26 | 4.67 | 4.32 | 3.54 | 3.11 | 4.12 | 3.56 | 4.41 | 3.22 | 43.6 |