| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F | |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 5b: -15°F to -10°F | |
| 1990 Hardiness Zone: | Zone 1b: -15F to -10F | |
| Average First Frost Date: | October 11 - 20 | |
| Average Last Frost Date: | May 1 - 10 | |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers | |
| Ecoregion: | 56b - Elkhart Till Plains | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 46561 - Osceola, IN | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 16 | 19 | 28 | 38 | 48 | 58 | 62 | 60 | 53 | 42 | 32 | 22 | 40 |
| Avg Max Temp (°F) | 31 | 36 | 47 | 59 | 71 | 80 | 84 | 81 | 75 | 63 | 48 | 36 | 59 |
| Avg Precip (In.) | 2.16 | 1.85 | 2.77 | 3.55 | 3.6 | 4.07 | 3.67 | 3.84 | 3.7 | 3.17 | 3.21 | 2.92 | 38.49 |