| 2023 Hardiness Zone: | 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: | 40c - Wooded Osage Plains |
| Heat Zone Days: | 61 - 90 days Over 86°F |
Annual Climate Data for ZIP Code 66085 - Stilwell, KS | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 18 | 24 | 33 | 44 | 54 | 63 | 68 | 66 | 57 | 46 | 34 | 23 | 44 |
| Avg Max Temp (°F) | 37 | 44 | 55 | 66 | 75 | 84 | 89 | 87 | 80 | 69 | 53 | 41 | 65 |
| Avg Precip (In.) | 1.32 | 1.41 | 2.75 | 3.78 | 5.47 | 5.09 | 4.1 | 3.68 | 4.69 | 3.38 | 2.87 | 1.71 | 40.25 |