Idaville, Oregon has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 6.7 °C (low) to 15 °C (high). Annual precipitation averages 2227.8 Millimeters. Idaville is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 3.8 °C | 10.2 °C | 315.72 mm |
| February | 3.4 °C | 10.9 °C | 239.01 mm |
| March | 3.9 °C | 11.9 °C | 246.13 mm |
| April | 4.9 °C | 13.9 °C | 188.98 mm |
| May | 7.3 °C | 16.2 °C | 114.81 mm |
| June | 9.4 °C | 18.1 °C | 82.3 mm |
| July | 10.9 °C | 19.9 °C | 24.64 mm |
| August | 10.9 °C | 20.6 °C | 31.75 mm |
| September | 9.4 °C | 20.1 °C | 78.23 mm |
| October | 7.3 °C | 16.6 °C | 203.45 mm |
| November | 5.2 °C | 12.3 °C | 329.69 mm |
| December | 3.6 °C | 9.8 °C | 373.13 mm |
| Annual | 6.7 °C | 15 °C | 2227.84 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 20-30 Days |
| Plant Hardiness Zone | Zone 9a : -6.7°C to -3.9°C |
| Plant Hardiness Zone - 2012 | Zone 8b : -9.4°C to -6.7°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Csb - Warm-Summer Mediterranean Climate |