| 2023 Hardiness Zone: | Zone 5b: -15°F to -10°F |
| 2012 Hardiness Zone: | 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: | 47f - Rolling Loess Prairies |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 52804 - Davenport, IA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 12 | 18 | 29 | 40 | 52 | 61 | 66 | 64 | 55 | 43 | 31 | 19 | 41 |
| Avg Max Temp (°F) | 29 | 35 | 47 | 60 | 72 | 82 | 85 | 83 | 76 | 64 | 47 | 34 | 59 |
| Avg Precip (In.) | 1.37 | 1.38 | 2.6 | 3.54 | 4.13 | 4.5 | 3.93 | 4.39 | 3.21 | 2.7 | 2.59 | 2.04 | 36.38 |