| 2023 Hardiness Zone: | Zone 7a: 0°F to 5°F |
| 2012 Hardiness Zone: | Zone 6b: -5°F to 0°F |
| 1990 Hardiness Zone: | Zone 6b: -5F to 0F |
| Average First Frost Date: | Oct. 21 - Oct. 31 |
| Average Last Frost Date: | Apr. 11 - Apr. 20 |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers |
| Ecoregion: | 72f - River Hills |
| Heat Zone Days: | 61 - 90 days Over 86°F |
Annual Climate Data for ZIP Code 63701 - Cape Girardeau, MO | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 23 | 28 | 37 | 46 | 55 | 64 | 68 | 66 | 58 | 46 | 37 | 28 | 46 |
| Avg Max Temp (°F) | 42 | 48 | 58 | 69 | 78 | 87 | 90 | 89 | 82 | 71 | 57 | 45 | 68 |
| Avg Precip (In.) | 3.25 | 3.34 | 4.62 | 4.56 | 4.95 | 4 | 3.72 | 3.38 | 3.31 | 3.22 | 4.62 | 4.17 | 47.14 |