| 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 Zone 5b: -15°F to -10°F |
| 1990 Hardiness Zone: | Zone 5a: -20F to -15F |
| Average First Frost Date: | Oct. 1 - Oct. 10 |
| Average Last Frost Date: | May 11 - May 20 |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year |
| Ecoregion: | 53d - Lake Michigan Lacustrine Clay Plain |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 54217 - Luxemburg, WI | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 8 | 12 | 22 | 33 | 44 | 54 | 59 | 58 | 50 | 39 | 27 | 15 | 35 |
| Avg Max Temp (°F) | 25 | 29 | 39 | 53 | 65 | 75 | 80 | 78 | 70 | 57 | 42 | 29 | 53 |
| Avg Precip (In.) | 1.54 | 1.18 | 2.06 | 2.68 | 2.9 | 3.58 | 3.49 | 3.77 | 3.4 | 2.42 | 2.42 | 1.64 | 31.09 |