| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F Zone 5b: -15°F to -10°F | |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F Zone 7a: 0°F to 5°F Zone 5b: -15°F to -10°F | |
| 1990 Hardiness Zone: | Zone 6a: -10F to -5F | |
| Average First Frost Date: | Oct. 1 - Oct. 10 | |
| Average Last Frost Date: | May 21 - May 31 | |
| Koppen-Geiger Climate Zone: | BSk - Cold Semi-Arid Climate | |
| Ecoregion: | 20b - Shale and Sedimentary Basins | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 61 - 90 days Over 86°F |
Annual Climate Data for ZIP Code 81425 - Olathe, CO | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 14 | 20 | 28 | 34 | 42 | 50 | 56 | 54 | 46 | 35 | 24 | 16 | 35 |
| Avg Max Temp (°F) | 38 | 46 | 55 | 63 | 73 | 85 | 90 | 87 | 79 | 67 | 51 | 40 | 65 |
| Avg Precip (In.) | .53 | .46 | .8 | .73 | .88 | .53 | .88 | .98 | 1.03 | 1.14 | .83 | .59 | 9.37 |