Olney Springs, Colorado has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 2.4 °C (low) to 20.6 °C (high). Annual precipitation averages 292.3 Millimeters. 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 | -9.7 °C | 8.3 °C | 5.59 mm |
| February | -7.8 °C | 10 °C | 5.33 mm |
| March | -3.4 °C | 15.8 °C | 16.76 mm |
| April | 1.3 °C | 19.6 °C | 32 mm |
| May | 7.2 °C | 24.8 °C | 39.37 mm |
| June | 12.9 °C | 31 °C | 36.83 mm |
| July | 15.8 °C | 33.7 °C | 47.75 mm |
| August | 14.7 °C | 32.3 °C | 52.07 mm |
| September | 9.6 °C | 28.4 °C | 17.78 mm |
| October | 1.9 °C | 21.2 °C | 21.59 mm |
| November | -4.7 °C | 14 °C | 9.65 mm |
| December | -9.4 °C | 8.3 °C | 7.62 mm |
| Annual | 2.4 °C | 20.6 °C | 292.34 mm |
| 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 : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |