| 2023 Hardiness Zone: | Zone 6b: -5°F to 0°F |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F Zone 5b: -15°F to -10°F |
| 1990 Hardiness Zone: | Zone 6a: -10F to -5F |
| 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: | 1 - 7 days Over 86°F |
Annual Climate Data for ZIP Code 47001 - Aurora, IN | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 21 | 24 | 32 | 40 | 50 | 60 | 64 | 63 | 55 | 43 | 34 | 26 | 43 |
| Avg Max Temp (°F) | 39 | 44 | 55 | 65 | 75 | 83 | 87 | 86 | 79 | 68 | 55 | 43 | 65 |
| Avg Precip (In.) | 3.09 | 2.85 | 4.06 | 4.06 | 4.81 | 4.36 | 4.07 | 3.79 | 2.95 | 3 | 3.57 | 3.39 | 44.01 |