| 2023 Hardiness Zone: | Zone 6b: -5°F to 0°F |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F |
| 1990 Hardiness Zone: | Zone 1b: -15F to -10F |
| Average First Frost Date: | Oct. 21 - Oct. 31 |
| Average Last Frost Date: | Apr. 21 - Apr. 30 |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers |
| Ecoregion: | 39e - Osage/Gasconade Hills |
| Heat Zone Days: | 61 - 90 days Over 86°F |
Annual Climate Data for ZIP Code 64776 - Osceola, MO | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 20 | 26 | 35 | 45 | 54 | 63 | 68 | 66 | 58 | 46 | 35 | 25 | 45 |
| Avg Max Temp (°F) | 41 | 47 | 58 | 69 | 77 | 85 | 91 | 90 | 81 | 71 | 56 | 44 | 67 |
| Avg Precip (In.) | 1.72 | 2.01 | 3.14 | 4.11 | 4.76 | 4.74 | 3.52 | 3.97 | 4.07 | 3.9 | 3.57 | 2.48 | 42.01 |