| 2023 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 4b: -25°F to -20°F | |
| 2012 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 4b: -25°F to -20°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: | Rare Over 86°F |
Annual Climate Data for ZIP Code 50659 - New Hampton, IA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 6 | 13 | 25 | 36 | 48 | 58 | 62 | 60 | 51 | 39 | 26 | 12 | 36 |
| Avg Max Temp (°F) | 24 | 30 | 42 | 58 | 71 | 80 | 83 | 81 | 73 | 61 | 42 | 28 | 56 |
| Avg Precip (In.) | 1.06 | .96 | 2.19 | 3.73 | 4.33 | 4.79 | 4.51 | 4.79 | 3.28 | 2.59 | 2.4 | 1.35 | 35.97 |