| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F |
| 1990 Hardiness Zone: | Zone 1b: -15F to -10F |
| Average First Frost Date: | Oct. 21 - Oct. 31 |
| Average Last Frost Date: | Apr. 11 - Apr. 20 |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers |
| Ecoregion: | 40b - Osage Cuestas |
| Heat Zone Days: | 61 - 90 days Over 86°F |
Annual Climate Data for ZIP Code 66048 - Leavenworth, KS | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 17 | 22 | 31 | 42 | 54 | 63 | 68 | 65 | 56 | 45 | 32 | 22 | 43 |
| Avg Max Temp (°F) | 37 | 44 | 55 | 66 | 76 | 85 | 90 | 88 | 80 | 69 | 53 | 41 | 65 |
| Avg Precip (In.) | 1.12 | 1.27 | 2.75 | 3.64 | 5.36 | 4.87 | 4.75 | 3.96 | 4.89 | 3.66 | 2.69 | 1.55 | 40.51 |