| 2023 Hardiness Zone: | Zone 5b: -15°F to -10°F |
| 2012 Hardiness Zone: | Zone 5b: -15°F to -10°F |
| 1990 Hardiness Zone: | Zone 5a: -20F to -15F |
| Average First Frost Date: | Oct. 11 - Oct. 20 |
| Average Last Frost Date: | May 1 - May 10 |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers |
| Ecoregion: | 54f - Valparaiso-Wheaton Morainal Complex |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 60098 - Woodstock, IL | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 11 | 16 | 26 | 36 | 47 | 57 | 62 | 60 | 52 | 40 | 29 | 17 | 38 |
| Avg Max Temp (°F) | 28 | 33 | 44 | 58 | 71 | 80 | 84 | 82 | 74 | 62 | 46 | 33 | 58 |
| Avg Precip (In.) | 1.61 | 1.36 | 2.37 | 3.7 | 3.73 | 4.41 | 3.92 | 4.43 | 3.45 | 2.61 | 2.81 | 2.03 | 36.41 |