Culbertson, Nebraska has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 37.1 °F (low) to 65.5 °F (high). Annual precipitation averages 21.9 Inches. Culbertson 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 | 14.4 °F | 40.9 °F | 0.35 in. |
| February | 16.8 °F | 44.0 °F | 0.57 in. |
| March | 25.4 °F | 55.2 °F | 1.13 in. |
| April | 34.8 °F | 64.2 °F | 2.28 in. |
| May | 46.2 °F | 73.8 °F | 3.08 in. |
| June | 57.2 °F | 85.2 °F | 3.34 in. |
| July | 62.8 °F | 90.8 °F | 3.45 in. |
| August | 60.5 °F | 88.5 °F | 3.21 in. |
| September | 50.4 °F | 80.9 °F | 1.55 in. |
| October | 36.4 °F | 67.3 °F | 1.71 in. |
| November | 24.1 °F | 53.2 °F | 0.74 in. |
| December | 15.7 °F | 42.0 °F | 0.51 in. |
| Annual | 37.1 °F | 65.5 °F | 21.92 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 5b : -15°F to -10°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |