| 2023 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 9a: 20°F to 25°F | |
| 2012 Hardiness Zone: | Zone 8b: 15°F to 20°F | |
| 1990 Hardiness Zone: | Zone 8b: 15F to 20F | |
| Average First Frost Date: | Nov. 11 - Nov. 20 | |
| Average Last Frost Date: | Apr. 1 - Apr. 10 | |
| Koppen-Geiger Climate Zone: | Csb - Warm-Summer Mediterranean Climate | |
| Ecoregion: | 3b - Willamette River and Tributaries Gallery Forest | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 97042 - Mulino, OR | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 34 | 36 | 37 | 40 | 45 | 50 | 53 | 53 | 49 | 43 | 39 | 35 | 43 |
| Avg Max Temp (°F) | 47 | 52 | 56 | 60 | 68 | 73 | 81 | 81 | 76 | 64 | 53 | 47 | 63 |
| Avg Precip (In.) | 6.98 | 5.39 | 5.02 | 3.43 | 2.8 | 2.05 | .59 | .99 | 1.88 | 4.26 | 6.49 | 6.86 | 46.75 |