| 2023 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 5b: -15°F to -10°F |
| 2012 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 4b: -25°F to -20°F Zone 5b: -15°F to -10°F |
| 1990 Hardiness Zone: | Zone 5a: -20F to -15F |
| 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: | 58a - Taconic Mountains |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 01237 - Lanesboro, MA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 10 | 11 | 20 | 31 | 41 | 49 | 54 | 53 | 44 | 33 | 27 | 16 | 32 |
| Avg Max Temp (°F) | 29 | 32 | 41 | 52 | 65 | 73 | 78 | 76 | 68 | 57 | 45 | 34 | 54 |
| Avg Precip (In.) | 3.29 | 2.63 | 3.37 | 3.91 | 4.65 | 4.59 | 4.56 | 4.82 | 4.39 | 3.76 | 4.01 | 3.33 | 47.33 |