Olney Springs, Colorado has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 36.2 °F (low) to 69.1 °F (high). Annual precipitation averages 11.5 Inches. Olney Springs is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 14.5 °F | 47.0 °F | 0.22 in. |
| February | 17.9 °F | 50.0 °F | 0.21 in. |
| March | 25.9 °F | 60.5 °F | 0.66 in. |
| April | 34.3 °F | 67.3 °F | 1.26 in. |
| May | 45.0 °F | 76.7 °F | 1.55 in. |
| June | 55.2 °F | 87.8 °F | 1.45 in. |
| July | 60.4 °F | 92.7 °F | 1.88 in. |
| August | 58.5 °F | 90.1 °F | 2.05 in. |
| September | 49.3 °F | 83.2 °F | 0.7 in. |
| October | 35.4 °F | 70.2 °F | 0.85 in. |
| November | 23.5 °F | 57.2 °F | 0.38 in. |
| December | 15.0 °F | 47.0 °F | 0.3 in. |
| Annual | 36.2 °F | 69.1 °F | 11.51 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |