| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F | |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F | |
| 1990 Hardiness Zone: | Zone 1b: -15F to -10F | |
| Average First Frost Date: | Oct. 11 - Oct. 20 | |
| Average Last Frost Date: | May 1 - May 10 | |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year | |
| Ecoregion: | 59b - Lower Worcester Plateau/Eastern Connecticut Upland | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 01524 - Leicester, MA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 15 | 17 | 25 | 35 | 45 | 54 | 60 | 59 | 50 | 40 | 31 | 21 | 38 |
| Avg Max Temp (°F) | 32 | 34 | 43 | 54 | 66 | 75 | 79 | 77 | 70 | 59 | 48 | 36 | 56 |
| Avg Precip (In.) | 4.22 | 3.24 | 4.26 | 4.13 | 4.31 | 4.08 | 4.17 | 4.2 | 4.21 | 4.59 | 4.4 | 3.94 | 49.75 |