Klamath Falls, Oregon has a Humid Continental Climate - Dry Cool Summer climate (Köppen classification: Dsb). Average annual temperatures range from 32.1 °F (low) to 61 °F (high). Annual precipitation averages 14.1 Inches. Klamath Falls is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Jun. 1 - Jun. 10 through the first frost around Sep.11 - Sep. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 21.3 °F | 40.8 °F | 2.02 in. |
| February | 23.5 °F | 45.1 °F | 1.52 in. |
| March | 26.7 °F | 50.5 °F | 1.46 in. |
| April | 29.5 °F | 56.6 °F | 1.04 in. |
| May | 35.9 °F | 66.0 °F | 1.1 in. |
| June | 41.0 °F | 74.5 °F | 0.66 in. |
| July | 47.0 °F | 84.9 °F | 0.34 in. |
| August | 45.2 °F | 83.9 °F | 0.39 in. |
| September | 38.4 °F | 77.0 °F | 0.41 in. |
| October | 30.4 °F | 63.9 °F | 0.95 in. |
| November | 25.2 °F | 48.6 °F | 1.54 in. |
| December | 20.7 °F | 39.6 °F | 2.66 in. |
| Annual | 32.1 °F | 61 °F | 14.09 in. |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | Jun. 1 - Jun. 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dsb - Humid Continental Climate - Dry Cool Summer |