| 2023 Hardiness Zone: | Zone 6b: -5°F to 0°F Zone 7b: 5°F to 10°F Zone 7a: 0°F to 5°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 |
| 1990 Hardiness Zone: | Zone 6a: -10F to -5F |
| Average First Frost Date: | Sep.1 - Sep. 10 |
| Average Last Frost Date: | Jun. 11 - Jun. 20 |
| Koppen-Geiger Climate Zone: | Dsb - Humid Continental Climate - Dry Cool Summer |
| Ecoregion: | 11n - Deschutes River Valley |
| Heat Zone Days: | 31 - 45 days Over 86°F |
Annual Climate Data for ZIP Code 97741 - Madras, OR | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 24 | 27 | 29 | 32 | 38 | 43 | 48 | 47 | 40 | 33 | 29 | 24 | 34 |
| Avg Max Temp (°F) | 42 | 47 | 55 | 62 | 70 | 78 | 86 | 86 | 78 | 65 | 50 | 42 | 63 |
| Avg Precip (In.) | 1.28 | .93 | .94 | .84 | 1 | .66 | .48 | .43 | .47 | .75 | 1.42 | 1.26 | 10.46 |