| 2023 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 5b: -15°F to -10°F | |
| 2012 Hardiness Zone: | Zone 5a: -20°F to -15°F | |
| 1990 Hardiness Zone: | Zone 5a: -20F to -15F | |
| Average First Frost Date: | Oct. 1 - Oct. 10 | |
| Average Last Frost Date: | May 1 - May 10 | |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers | |
| Ecoregion: | 47l - Transitional Sandy Plain | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 15 - 30 days Over 86°F |
Annual Climate Data for ZIP Code 68701 - Norfolk, NE | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 9 | 15 | 25 | 37 | 48 | 58 | 63 | 61 | 51 | 38 | 25 | 13 | 37 |
| Avg Max Temp (°F) | 31 | 37 | 48 | 62 | 72 | 83 | 87 | 84 | 77 | 64 | 45 | 33 | 60 |
| Avg Precip (In.) | .57 | .73 | 2.02 | 2.67 | 4.07 | 4.18 | 3.57 | 2.85 | 2.31 | 1.8 | 1.44 | .69 | 26.89 |