| 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 Zone 5b: -15°F to -10°F |
| 1990 Hardiness Zone: | Zone 1b: -15F to -10F |
| Average First Frost Date: | Oct. 21 - Oct. 31 |
| Average Last Frost Date: | Apr. 21 - Apr. 30 |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers |
| Ecoregion: | 47f - Rolling Loess Prairies |
| Heat Zone Days: | 61 - 90 days Over 86°F |
Annual Climate Data for ZIP Code 64633 - Carrollton, MO | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 15 | 21 | 31 | 41 | 52 | 62 | 66 | 64 | 55 | 43 | 31 | 21 | 42 |
| Avg Max Temp (°F) | 35 | 42 | 55 | 66 | 76 | 85 | 90 | 88 | 80 | 69 | 53 | 40 | 65 |
| Avg Precip (In.) | 1.54 | 1.67 | 2.86 | 3.83 | 4.96 | 4.45 | 4.3 | 3.89 | 4.37 | 3.49 | 3.05 | 2.14 | 40.54 |