| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F |
| 2012 Hardiness Zone: | Zone 5b: -15°F to -10°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: | 47f - Rolling Loess Prairies |
| Heat Zone Days: | 46 - 60 days Over 86°F |
Annual Climate Data for ZIP Code 64485 - Savannah, MO | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 14 | 19 | 29 | 40 | 52 | 61 | 65 | 63 | 54 | 42 | 30 | 19 | 41 |
| Avg Max Temp (°F) | 34 | 40 | 52 | 64 | 74 | 83 | 88 | 86 | 79 | 67 | 50 | 38 | 63 |
| Avg Precip (In.) | .94 | 1.14 | 2.49 | 3.26 | 4.89 | 4.38 | 4.54 | 3.91 | 4.38 | 2.98 | 2.32 | 1.37 | 36.61 |