| 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: | Oct. 11 - Oct. 20 | |
| Average Last Frost Date: | May 1 - May 10 | |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers | |
| Ecoregion: | 55a - Clayey High Lime Till Plains | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 46952 - Marion, IN | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 16 | 19 | 28 | 38 | 49 | 59 | 63 | 60 | 53 | 41 | 33 | 22 | 40 |
| Avg Max Temp (°F) | 32 | 37 | 48 | 60 | 72 | 81 | 84 | 82 | 76 | 64 | 50 | 37 | 60 |
| Avg Precip (In.) | 2.18 | 2.03 | 2.98 | 3.58 | 4.21 | 4.02 | 4.56 | 3.68 | 2.88 | 2.61 | 3.34 | 2.85 | 38.91 |