Athena, Oregon has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 4.2 °C (low) to 16.9 °C (high). Annual precipitation averages 539.3 Millimeters. Athena is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -2.4 °C | 4.9 °C | 60.45 mm |
| February | -1.6 °C | 7.5 °C | 50.29 mm |
| March | 0.7 °C | 12 °C | 60.45 mm |
| April | 2.9 °C | 15.9 °C | 56.39 mm |
| May | 6.5 °C | 20.7 °C | 58.17 mm |
| June | 9.4 °C | 24.8 °C | 40.13 mm |
| July | 12.6 °C | 30.8 °C | 9.4 mm |
| August | 12.3 °C | 30.4 °C | 11.94 mm |
| September | 8.4 °C | 25.1 °C | 18.29 mm |
| October | 3.7 °C | 17.3 °C | 40.13 mm |
| November | -0.1 °C | 9.2 °C | 65.79 mm |
| December | -2.6 °C | 4.5 °C | 67.82 mm |
| Annual | 4.2 °C | 16.9 °C | 539.25 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Csa - Hot-Summer Mediterranean Climate |