| 2023 Hardiness Zone: | Zone 4b: -25°F to -20°F Zone 4a: -30°F to -25°F | |
| 2012 Hardiness Zone: | Zone 4a: -30°F to -25°F | |
| 1990 Hardiness Zone: | Zone 3b: -35F to -30F | |
| Average First Frost Date: | Sep. 21 - Sep. 30 | |
| Average Last Frost Date: | May 21 - May 31 | |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year | |
| Ecoregion: | 50i - Northern Highlands Lakes Country | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 54501 - Rhinelander, WI | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | -1 | 4 | 15 | 29 | 41 | 50 | 55 | 53 | 45 | 34 | 22 | 7 | 30 |
| Avg Max Temp (°F) | 21 | 27 | 38 | 52 | 67 | 74 | 78 | 76 | 67 | 55 | 38 | 25 | 51 |
| Avg Precip (In.) | 1.21 | .87 | 1.63 | 2.37 | 3.32 | 3.86 | 4 | 4.31 | 4.08 | 2.62 | 2.09 | 1.3 | 31.67 |