| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F Zone 5b: -15°F to -10°F |
| 1990 Hardiness Zone: | Zone 1b: -15F to -10F |
| 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: | 39d - Central Plateau |
| Heat Zone Days: | 61 - 90 days Over 86°F |
Annual Climate Data for ZIP Code 65559 - Saint James, MO | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 19 | 24 | 33 | 43 | 52 | 61 | 66 | 64 | 56 | 44 | 34 | 24 | 43 |
| Avg Max Temp (°F) | 40 | 46 | 56 | 67 | 76 | 84 | 89 | 88 | 80 | 69 | 55 | 44 | 66 |
| Avg Precip (In.) | 2.1 | 2.31 | 3.62 | 4.06 | 4.69 | 3.94 | 3.98 | 3.7 | 3.66 | 3.44 | 4.19 | 3.01 | 42.69 |