Lynch, Nebraska has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 2.4 °C (low) to 16.1 °C (high). Annual precipitation averages 639.1 Millimeters. Lynch is located in USDA Plant Hardiness Zone 4b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -12.3 °C | 0.2 °C | 11.68 mm |
| February | -10.4 °C | 2.9 °C | 16.51 mm |
| March | -4.6 °C | 9.4 °C | 30.23 mm |
| April | 1.6 °C | 15.8 °C | 81.03 mm |
| May | 8.2 °C | 21.9 °C | 99.06 mm |
| June | 14.3 °C | 27.6 °C | 91.95 mm |
| July | 17.3 °C | 31.3 °C | 76.71 mm |
| August | 16.1 °C | 30 °C | 80.26 mm |
| September | 10.6 °C | 25.7 °C | 62.23 mm |
| October | 2.8 °C | 17.6 °C | 54.36 mm |
| November | -4.4 °C | 9.1 °C | 20.57 mm |
| December | -10.2 °C | 2 °C | 14.48 mm |
| Annual | 2.4 °C | 16.1 °C | 639.07 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 4b : -31.7°C to -28.9°C |
| Plant Hardiness Zone - 2012 | Zone 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |