Tekoa, Washington has a Humid Continental Climate - Dry Cool Summer climate (Köppen classification: Dsb). Average annual temperatures range from 36 °F (low) to 58.8 °F (high). Annual precipitation averages 20.6 Inches. Tekoa is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Sep.11 - Sep. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 25.2 °F | 37.1 °F | 2.48 in. |
| February | 26.2 °F | 41.3 °F | 1.72 in. |
| March | 30.0 °F | 48.8 °F | 2.19 in. |
| April | 34.5 °F | 56.7 °F | 1.69 in. |
| May | 40.6 °F | 66.2 °F | 2.03 in. |
| June | 45.9 °F | 72.0 °F | 1.73 in. |
| July | 49.6 °F | 83.3 °F | 0.64 in. |
| August | 49.0 °F | 84.3 °F | 0.47 in. |
| September | 42.4 °F | 74.7 °F | 0.71 in. |
| October | 34.9 °F | 59.9 °F | 1.59 in. |
| November | 29.6 °F | 44.7 °F | 2.52 in. |
| December | 24.3 °F | 36.0 °F | 2.79 in. |
| Annual | 36 °F | 58.8 °F | 20.56 in. |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 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 |