Blair, Nebraska has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 39.5 °F (low) to 61 °F (high). Annual precipitation averages 32 Inches. Blair is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 12.6 °F | 31.5 °F | 0.75 in. |
| February | 16.3 °F | 36.4 °F | 0.92 in. |
| March | 27.2 °F | 49.3 °F | 1.87 in. |
| April | 38.3 °F | 62.1 °F | 3.31 in. |
| May | 50.7 °F | 72.6 °F | 4.66 in. |
| June | 61.5 °F | 82.5 °F | 5.03 in. |
| July | 65.3 °F | 85.8 °F | 3.43 in. |
| August | 62.6 °F | 83.9 °F | 3.69 in. |
| September | 53.3 °F | 77.7 °F | 3.35 in. |
| October | 40.6 °F | 64.7 °F | 2.35 in. |
| November | 27.9 °F | 49.2 °F | 1.4 in. |
| December | 17.7 °F | 35.8 °F | 1.28 in. |
| Annual | 39.5 °F | 61 °F | 32.04 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 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 | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |