| 2023 Hardiness Zone: | 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 6a: -10F to -5F |
| Average First Frost Date: | Oct. 21 - Oct. 31 |
| Average Last Frost Date: | Apr. 11 - Apr. 20 |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers |
| Ecoregion: | 72a - Wabash-Ohio Bottomlands |
| Heat Zone Days: | 61 - 90 days Over 86°F |
Annual Climate Data for ZIP Code 62863 - Mount Carmel, IL | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 21 | 25 | 34 | 44 | 54 | 63 | 66 | 64 | 56 | 46 | 35 | 26 | 44 |
| Avg Max Temp (°F) | 39 | 45 | 56 | 67 | 76 | 85 | 88 | 87 | 81 | 71 | 55 | 43 | 66 |
| Avg Precip (In.) | 2.83 | 2.84 | 4.26 | 4.48 | 5.04 | 4.08 | 4 | 3.63 | 3.06 | 3.16 | 4.3 | 3.56 | 45.21 |