| 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: | 54d - Sand Area | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 1 - 7 days Over 86°F |
Annual Climate Data for ZIP Code 60970 - Watseka, IL | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 14 | 18 | 29 | 39 | 50 | 59 | 63 | 61 | 52 | 41 | 31 | 20 | 40 |
| Avg Max Temp (°F) | 30 | 36 | 48 | 60 | 72 | 82 | 84 | 83 | 77 | 64 | 49 | 36 | 60 |
| Avg Precip (In.) | 1.64 | 1.73 | 3.3 | 3.74 | 4.09 | 4.54 | 4.19 | 3.68 | 3.35 | 2.89 | 3.33 | 2.58 | 39.08 |