| 2023 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 |
| 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: | Aug. 21 - Aug. 31 |
| Average Last Frost Date: | Jun. 11 - Jun. 20 |
| Koppen-Geiger Climate Zone: | Dsc - Continental Subarctic - Cold Dry Summer |
| Ecoregion: | 80g - High Lava Plains |
| Heat Zone Days: | 8 - 14 days Over 86°F |
Annual Climate Data for ZIP Code 97638 - Silver Lake, OR | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 21 | 23 | 25 | 28 | 34 | 40 | 44 | 43 | 36 | 29 | 26 | 19 | 31 |
| Avg Max Temp (°F) | 39 | 44 | 50 | 58 | 66 | 75 | 84 | 84 | 75 | 64 | 47 | 39 | 61 |
| Avg Precip (In.) | 1.02 | .68 | .8 | .73 | 1.12 | .8 | .58 | .59 | .56 | .63 | 1.1 | 1.26 | 9.85 |