Ogallala, Nebraska has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 2.3 °C (low) to 17.6 °C (high). Annual precipitation averages 494.5 Millimeters. Ogallala is located in USDA Plant Hardiness Zone 5b. 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 | -9.6 °C | 4.3 °C | 9.91 mm |
| February | -8.4 °C | 5.8 °C | 12.95 mm |
| March | -3.9 °C | 11.9 °C | 27.18 mm |
| April | 0.9 °C | 16.4 °C | 56.39 mm |
| May | 7 °C | 21.8 °C | 84.58 mm |
| June | 13.1 °C | 28.4 °C | 84.07 mm |
| July | 16.2 °C | 31.8 °C | 71.63 mm |
| August | 15 °C | 30.6 °C | 54.1 mm |
| September | 9.6 °C | 26.3 °C | 38.1 mm |
| October | 1.9 °C | 18.4 °C | 33.02 mm |
| November | -4.6 °C | 11 °C | 12.95 mm |
| December | -9.1 °C | 4.9 °C | 9.65 mm |
| Annual | 2.3 °C | 17.6 °C | 494.53 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 5b : -26.1°C to -23.3°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 |