| 2023 Hardiness Zone: | Zone 6b: -5°F to 0°F Zone 7a: 0°F to 5°F | |
| 2012 Hardiness Zone: | Zone 6b: -5°F to 0°F | |
| 1990 Hardiness Zone: | Zone 6b: -5F to 0F | |
| Average First Frost Date: | Oct. 21 - Oct. 31 | |
| Average Last Frost Date: | Apr. 11 - Apr. 20 | |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate | |
| Ecoregion: | 27d - Wellington-McPherson Lowland | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 91 - 120 days Over 86°F |
Annual Climate Data for ZIP Code 67058 - Harper, KS | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 20 | 24 | 33 | 43 | 54 | 64 | 69 | 67 | 59 | 46 | 33 | 23 | 45 |
| Avg Max Temp (°F) | 42 | 49 | 58 | 68 | 77 | 88 | 94 | 93 | 84 | 72 | 56 | 44 | 69 |
| Avg Precip (In.) | .91 | 1.07 | 2.79 | 2.95 | 4.37 | 4.29 | 3.19 | 2.9 | 2.91 | 2.4 | 2.05 | 1.12 | 30.96 |