| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F Zone 7a: 0°F to 5°F |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F |
| 1990 Hardiness Zone: | Zone 6b: -5F to 0F |
| Average First Frost Date: | Oct. 21 - Oct. 31 |
| Average Last Frost Date: | Apr. 21 - Apr. 30 |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers |
| Ecoregion: | 71d - Outer Bluegrass |
| Heat Zone Days: | 61 - 90 days Over 86°F |
Annual Climate Data for ZIP Code 47250 - Madison, IN | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 22 | 25 | 33 | 42 | 52 | 61 | 66 | 64 | 57 | 45 | 36 | 27 | 44 |
| Avg Max Temp (°F) | 39 | 44 | 55 | 66 | 75 | 82 | 86 | 85 | 79 | 68 | 55 | 43 | 65 |
| Avg Precip (In.) | 3.15 | 3.01 | 4.24 | 4.28 | 4.94 | 4.37 | 4.34 | 4.05 | 2.97 | 3.18 | 3.83 | 3.62 | 45.98 |