Thayer, Nebraska has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 4 °C (low) to 16.8 °C (high). Annual precipitation averages 724.7 Millimeters. Thayer 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 | -10.2 °C | 1.3 °C | 16 mm |
| February | -8.1 °C | 3.7 °C | 18.03 mm |
| March | -2.7 °C | 10.7 °C | 39.88 mm |
| April | 3.1 °C | 17.2 °C | 69.34 mm |
| May | 9.8 °C | 22.8 °C | 127.25 mm |
| June | 15.8 °C | 28.4 °C | 104.14 mm |
| July | 18.2 °C | 30.6 °C | 88.14 mm |
| August | 16.8 °C | 29.3 °C | 89.92 mm |
| September | 11.6 °C | 25.9 °C | 61.21 mm |
| October | 4.3 °C | 18.7 °C | 53.09 mm |
| November | -2.8 °C | 10.3 °C | 33.53 mm |
| December | -8.1 °C | 3.1 °C | 24.13 mm |
| Annual | 4 °C | 16.8 °C | 724.66 mm |
| 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 : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |