| 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 5a: -20F to -15F | |
| 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: | 72f - River Hills | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 15 - 30 days Over 86°F |
Annual Climate Data for ZIP Code 62354 - Nauvoo, IL | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 15 | 21 | 31 | 42 | 53 | 63 | 68 | 65 | 57 | 45 | 33 | 21 | 43 |
| Avg Max Temp (°F) | 32 | 38 | 50 | 62 | 73 | 82 | 87 | 84 | 77 | 65 | 49 | 36 | 61 |
| Avg Precip (In.) | 1.39 | 1.52 | 2.9 | 3.58 | 4.93 | 4.12 | 4.33 | 3.56 | 3.87 | 2.85 | 2.97 | 2.13 | 38.16 |