The official National Weather Service forecast for Island Pond — 44.8148°N, 71.8804°W, 15 miles from I-91.
| Essex County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 24 | 28 | 37 | 50 | 64 | 72 | 76 | 75 | 68 | 55 | 41 | 30 | 52 |
| Avg low °F | 5 | 7 | 16 | 28 | 40 | 49 | 54 | 52 | 45 | 36 | 25 | 14 | 31 |
| Precip in | 3.0 | 2.6 | 2.8 | 3.5 | 4.3 | 5.0 | 4.9 | 4.4 | 3.8 | 4.5 | 3.4 | 3.9 | 46.1 |
1996–2025 normals for Essex County — the climate division Island Pond sits in. All-time county record high 93.1°F (1977-07-21); record low -38.4°F (1957-01-15). Source: NOAA / National Weather Service.