| 2023 Hardiness Zone: | 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: | Apr. 21 - Apr. 30 |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers |
| Ecoregion: | 40d - Cherokee Plains |
| Heat Zone Days: | 61 - 90 days Over 86°F |
Annual Climate Data for ZIP Code 64735 - Clinton, MO | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 16 | 21 | 31 | 41 | 52 | 62 | 66 | 64 | 55 | 43 | 33 | 22 | 42 |
| Avg Max Temp (°F) | 38 | 45 | 56 | 67 | 76 | 84 | 90 | 89 | 80 | 70 | 55 | 43 | 66 |
| Avg Precip (In.) | 1.55 | 1.95 | 3.2 | 3.96 | 5.46 | 4.98 | 3.91 | 4.02 | 4.49 | 3.79 | 3.59 | 2.13 | 43.04 |