| 2023 Hardiness Zone: | Zone 4b: -25°F to -20°F Zone 4a: -30°F to -25°F |
| 2012 Hardiness Zone: | Zone 4a: -30°F to -25°F |
| 1990 Hardiness Zone: | Zone 4a: -30F to -25F |
| Average First Frost Date: | Sep. 21 - Sep. 30 |
| Average Last Frost Date: | Jun. 1 - Jun. 10 |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year |
| Ecoregion: | 82a - Aroostook Lowlands |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 04750 - Limestone, ME | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | -2 | 1 | 14 | 28 | 39 | 49 | 54 | 52 | 43 | 33 | 23 | 7 | 28 |
| Avg Max Temp (°F) | 20 | 24 | 35 | 47 | 63 | 73 | 77 | 75 | 65 | 52 | 38 | 26 | 50 |
| Avg Precip (In.) | 3.06 | 2.24 | 2.78 | 2.85 | 3.43 | 3.61 | 4 | 3.89 | 3.47 | 3.33 | 3.13 | 3.18 | 38.99 |