| 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: | 47a - Loess Prairies | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 51033 - Linn Grove, IA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 5 | 12 | 23 | 35 | 47 | 57 | 61 | 59 | 49 | 37 | 24 | 11 | 35 |
| Avg Max Temp (°F) | 25 | 31 | 43 | 58 | 71 | 81 | 84 | 82 | 74 | 62 | 42 | 28 | 57 |
| Avg Precip (In.) | .58 | .62 | 1.98 | 3.15 | 3.68 | 4.6 | 4.15 | 4.21 | 2.95 | 2.19 | 1.69 | .81 | 30.6 |