| 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: | 40e - Claypan Prairie | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 46 - 60 days Over 86°F |
Annual Climate Data for ZIP Code 63549 - La Plata, MO | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 13 | 19 | 29 | 39 | 51 | 60 | 65 | 62 | 53 | 43 | 30 | 19 | 40 |
| Avg Max Temp (°F) | 32 | 39 | 50 | 62 | 73 | 82 | 86 | 85 | 77 | 66 | 50 | 37 | 62 |
| Avg Precip (In.) | 1.29 | 1.32 | 2.59 | 3.44 | 4.9 | 4.06 | 4.45 | 3.76 | 4.01 | 3.08 | 2.79 | 1.84 | 37.55 |