| 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 4b: -25F to -20F |
| Average First Frost Date: | Oct. 1 - Oct. 10 |
| Average Last Frost Date: | May 1 - May 10 |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers |
| Ecoregion: | 47f - Rolling Loess Prairies |
| Heat Zone Days: | 15 - 30 days Over 86°F |
Annual Climate Data for ZIP Code 50125 - Indianola, IA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 10 | 16 | 27 | 38 | 49 | 59 | 64 | 61 | 52 | 40 | 27 | 16 | 38 |
| Avg Max Temp (°F) | 29 | 36 | 48 | 61 | 71 | 81 | 85 | 83 | 76 | 64 | 47 | 34 | 59 |
| Avg Precip (In.) | .99 | 1.12 | 2.13 | 3.62 | 4.52 | 4.64 | 4.25 | 3.74 | 3.57 | 2.74 | 2.16 | 1.26 | 34.74 |