Palmer Lake, Colorado has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 31.9 °F (low) to 59.1 °F (high). Annual precipitation averages 21.9 Inches. Palmer Lake is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep.11 - Sep. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 16.1 °F | 41.5 °F | 1.02 in. |
| February | 16.9 °F | 41.9 °F | 1.08 in. |
| March | 22.3 °F | 49.4 °F | 2.25 in. |
| April | 28.0 °F | 54.7 °F | 2.79 in. |
| May | 37.2 °F | 63.6 °F | 2.49 in. |
| June | 46.3 °F | 75.5 °F | 1.86 in. |
| July | 52.4 °F | 80.9 °F | 2.45 in. |
| August | 50.9 °F | 78.7 °F | 3.02 in. |
| September | 42.9 °F | 72.3 °F | 1.59 in. |
| October | 32.1 °F | 60.1 °F | 1.33 in. |
| November | 22.4 °F | 49.2 °F | 1.23 in. |
| December | 15.5 °F | 41.5 °F | 0.83 in. |
| Annual | 31.9 °F | 59.1 °F | 21.94 in. |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 5b : -15°F to -10°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |