| 2023 Hardiness Zone: | Zone 7a: 0°F to 5°F |
| 2012 Hardiness Zone: | Zone 6b: -5°F to 0°F |
| 1990 Hardiness Zone: | Zone 6a: -10F to -5F |
| 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: | 39a - Springfield Plateau |
| Heat Zone Days: | 61 - 90 days Over 86°F |
Annual Climate Data for ZIP Code 64855 - Oronogo, MO | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 23 | 28 | 36 | 45 | 55 | 64 | 69 | 67 | 59 | 47 | 36 | 26 | 46 |
| Avg Max Temp (°F) | 42 | 49 | 59 | 69 | 77 | 85 | 90 | 90 | 81 | 71 | 57 | 46 | 68 |
| Avg Precip (In.) | 1.69 | 2.13 | 3.52 | 4.2 | 5.09 | 5.3 | 3.53 | 3.74 | 5.17 | 3.84 | 4.04 | 2.68 | 44.93 |