| 2023 Hardiness Zone: | Zone 7b: 5°F to 10°F Zone 7a: 0°F to 5°F |
| 2012 Hardiness Zone: | Zone 6b: -5°F to 0°F Zone 7a: 0°F to 5°F |
| 1990 Hardiness Zone: | Zone 6b: -5F to 0F |
| Average First Frost Date: | Nov. 1 - Nov. 10 |
| Average Last Frost Date: | Apr. 1 - Apr. 10 |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate |
| Ecoregion: | 39j - Black River Hills Border |
| Heat Zone Days: | 91 - 120 days Over 86°F |
Annual Climate Data for ZIP Code 63901 - Poplar Bluff, MO | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 23 | 28 | 36 | 46 | 56 | 65 | 69 | 67 | 59 | 46 | 37 | 28 | 47 |
| Avg Max Temp (°F) | 42 | 49 | 59 | 70 | 79 | 87 | 92 | 90 | 83 | 72 | 58 | 47 | 69 |
| Avg Precip (In.) | 3.05 | 3.47 | 4.74 | 4.74 | 4.5 | 3.89 | 3.76 | 3.31 | 3.35 | 3.31 | 4.91 | 4.29 | 47.32 |