| 2023 Hardiness Zone: | Zone 5b: -15°F to -10°F | |
| 2012 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 5b: -15°F to -10°F | |
| 1990 Hardiness Zone: | Zone 5a: -20F to -15F | |
| Average First Frost Date: | Oct. 11 - Oct. 20 | |
| Average Last Frost Date: | Apr. 21 - Apr. 30 | |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers | |
| Ecoregion: | 47b - Des Moines Lobe | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 1 - 7 days Over 86°F |
Annual Climate Data for ZIP Code 50310 - Des Moines, IA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 10 | 16 | 28 | 39 | 51 | 61 | 65 | 63 | 53 | 42 | 28 | 16 | 39 |
| Avg Max Temp (°F) | 28 | 35 | 47 | 60 | 72 | 81 | 85 | 83 | 75 | 64 | 46 | 33 | 59 |
| Avg Precip (In.) | .84 | 1.05 | 2.16 | 3.39 | 4.34 | 4.84 | 4.23 | 4.22 | 3.15 | 2.55 | 2.04 | 1.15 | 33.96 |