| 2023 Hardiness Zone: | Zone 5b: -15°F to -10°F | |
| 2012 Hardiness Zone: | Zone 5a: -20°F to -15°F | |
| 1990 Hardiness Zone: | Zone 4b: -25F to -20F | |
| Average First Frost Date: | Oct. 1 - Oct. 10 | |
| Average Last Frost Date: | May 11 - May 20 | |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers | |
| Ecoregion: | 44a - Sand Hills | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 46 - 60 days Over 86°F |
Annual Climate Data for ZIP Code 69152 - Mullen, NE | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 12 | 17 | 24 | 33 | 44 | 54 | 59 | 58 | 47 | 36 | 23 | 14 | 35 |
| Avg Max Temp (°F) | 36 | 42 | 51 | 62 | 72 | 83 | 89 | 87 | 78 | 65 | 47 | 38 | 62 |
| Avg Precip (In.) | .4 | .52 | 1.42 | 2.26 | 3.4 | 3.16 | 3.53 | 2.57 | 1.61 | 1.11 | 1.01 | .45 | 21.45 |