| 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: | 40e - Claypan Prairie |
| Heat Zone Days: | 61 - 90 days Over 86°F |
Annual Climate Data for ZIP Code 63361 - Montgomery City, MO | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 19 | 24 | 33 | 44 | 53 | 62 | 67 | 65 | 57 | 46 | 35 | 24 | 44 |
| Avg Max Temp (°F) | 36 | 44 | 55 | 67 | 76 | 84 | 89 | 87 | 79 | 69 | 51 | 40 | 65 |
| Avg Precip (In.) | 1.86 | 2.12 | 3.27 | 3.79 | 4.64 | 3.93 | 3.93 | 3.52 | 3.37 | 2.94 | 3.62 | 2.64 | 39.64 |