| 2023 Hardiness Zone: | Zone 5a: -20°F to -15°F | |
| 2012 Hardiness Zone: | Zone 5a: -20°F to -15°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: | 47c - Iowan Surface | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 1 - 7 days Over 86°F |
Annual Climate Data for ZIP Code 52349 - Vinton, IA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 9 | 15 | 26 | 37 | 49 | 58 | 62 | 60 | 51 | 40 | 27 | 15 | 37 |
| Avg Max Temp (°F) | 26 | 33 | 46 | 60 | 72 | 81 | 84 | 82 | 75 | 63 | 45 | 31 | 58 |
| Avg Precip (In.) | 1.03 | 1.02 | 2.11 | 3.38 | 4.11 | 4.55 | 3.99 | 4.37 | 3.58 | 2.52 | 2.35 | 1.32 | 34.34 |