| 2023 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 4b: -25°F to -20°F Zone 4a: -30°F to -25°F | |
| 2012 Hardiness Zone: | Zone 3b: -35°F to -30°F Zone 4b: -25°F to -20°F Zone 5a: -20°F to -15°F Zone 4a: -30°F to -25°F | |
| 1990 Hardiness Zone: | Zone 4b: -25F to -20F | |
| Average First Frost Date: | Oct. 1 - Oct. 10 | |
| Average Last Frost Date: | May 21 - May 31 | |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year | |
| Ecoregion: | 50a - Lake Superior Lacustrine Clay Plain | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 54806 - Ashland, WI | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 0 | 5 | 17 | 28 | 39 | 49 | 55 | 54 | 45 | 34 | 23 | 8 | 30 |
| Avg Max Temp (°F) | 20 | 27 | 37 | 50 | 64 | 73 | 79 | 77 | 68 | 56 | 38 | 25 | 51 |
| Avg Precip (In.) | 1.33 | .86 | 1.92 | 2.13 | 2.85 | 3.73 | 4.04 | 3.95 | 3.7 | 2.59 | 2.39 | 1.17 | 30.65 |