| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F 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. 11 - Oct. 20 | |
| Average Last Frost Date: | May 1 - May 10 | |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers | |
| Ecoregion: | 47e - Steeply Rolling Loess Prairies | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 31 - 45 days Over 86°F |
Annual Climate Data for ZIP Code 51548 - Mc Clelland, IA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 9 | 15 | 26 | 38 | 50 | 59 | 64 | 61 | 52 | 39 | 26 | 15 | 38 |
| Avg Max Temp (°F) | 30 | 36 | 49 | 62 | 73 | 82 | 86 | 83 | 77 | 65 | 47 | 34 | 60 |
| Avg Precip (In.) | .78 | .82 | 2.18 | 3.12 | 4.48 | 4.22 | 4.05 | 3.46 | 3.39 | 2.37 | 1.77 | .98 | 31.62 |