| 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: | 55f - Whitewater Interlobate Area |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 47374 - Richmond, IN | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 17 | 20 | 30 | 39 | 49 | 58 | 62 | 60 | 52 | 41 | 32 | 23 | 40 |
| Avg Max Temp (°F) | 34 | 39 | 50 | 62 | 72 | 81 | 84 | 83 | 76 | 64 | 50 | 39 | 61 |
| Avg Precip (In.) | 2.51 | 2.3 | 3.2 | 3.85 | 4.52 | 4.22 | 3.96 | 3.59 | 2.61 | 2.99 | 3.34 | 2.98 | 40.07 |