Guide Rock, Nebraska has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 39.7 °F (low) to 64.2 °F (high). Annual precipitation averages 26.6 Inches. Guide Rock is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 15.2 °F | 37.2 °F | 0.61 in. |
| February | 18.7 °F | 41.8 °F | 0.75 in. |
| March | 28.0 °F | 53.3 °F | 1.45 in. |
| April | 38.4 °F | 63.9 °F | 2.37 in. |
| May | 49.5 °F | 74.0 °F | 4.31 in. |
| June | 60.6 °F | 84.9 °F | 3.63 in. |
| July | 65.1 °F | 89.6 °F | 3.98 in. |
| August | 63.0 °F | 86.4 °F | 3.31 in. |
| September | 52.5 °F | 79.9 °F | 2.07 in. |
| October | 40.2 °F | 67.3 °F | 2.04 in. |
| November | 27.3 °F | 52.3 °F | 1.19 in. |
| December | 18.2 °F | 40.1 °F | 0.84 in. |
| Annual | 39.7 °F | 64.2 °F | 26.55 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 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 | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |