| 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: | Dfb - Humid Continental Mild Summer, Wet All Year |
| Ecoregion: | 55f - Whitewater Interlobate Area |
| Heat Zone Days: | 1 - 7 days Over 86°F |
Annual Climate Data for ZIP Code 47346 - Hagerstown, IN | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 15 | 18 | 27 | 37 | 48 | 57 | 61 | 59 | 50 | 39 | 31 | 21 | 39 |
| Avg Max Temp (°F) | 33 | 37 | 48 | 60 | 71 | 79 | 83 | 82 | 76 | 64 | 50 | 38 | 60 |
| Avg Precip (In.) | 2.37 | 2.28 | 3.25 | 4.08 | 4.77 | 4.36 | 4.2 | 3.6 | 2.8 | 2.82 | 3.49 | 2.99 | 41.01 |