| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F | |
| 2012 Hardiness Zone: | 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 46928 - Fairmount, IN | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 16 | 19 | 29 | 38 | 49 | 59 | 63 | 60 | 53 | 41 | 32 | 22 | 40 |
| Avg Max Temp (°F) | 32 | 37 | 48 | 60 | 71 | 80 | 84 | 82 | 76 | 64 | 50 | 37 | 60 |
| Avg Precip (In.) | 2.17 | 2.02 | 2.95 | 3.62 | 4.04 | 4.21 | 4.27 | 3.75 | 3.01 | 2.67 | 3.38 | 2.86 | 38.97 |