| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F |
| 2012 Hardiness Zone: | Zone 5b: -15°F to -10°F |
| 1990 Hardiness Zone: | Zone 5a: -20F to -15F |
| 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: | 40a - Loess Flats and Till Plains |
| Heat Zone Days: | 46 - 60 days Over 86°F |
Annual Climate Data for ZIP Code 64477 - Plattsburg, MO | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 13 | 17 | 29 | 39 | 49 | 59 | 64 | 61 | 53 | 40 | 28 | 18 | 39 |
| Avg Max Temp (°F) | 35 | 41 | 54 | 65 | 74 | 84 | 89 | 87 | 79 | 67 | 51 | 39 | 64 |
| Avg Precip (In.) | 1.17 | 1.25 | 2.6 | 3.41 | 5.13 | 4.42 | 4.96 | 3.86 | 4.34 | 3.13 | 2.4 | 1.58 | 38.26 |