The official National Weather Service forecast for Newburyport — 42.8126°N, 70.8773°W, 4.8 miles from I-95.
| Essex County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 36 | 38 | 46 | 57 | 67 | 76 | 82 | 80 | 74 | 62 | 51 | 41 | 59 |
| Avg low °F | 19 | 20 | 27 | 37 | 47 | 56 | 62 | 61 | 54 | 43 | 33 | 25 | 40 |
| Precip in | 3.6 | 3.4 | 4.3 | 4.3 | 3.9 | 4.2 | 3.8 | 3.6 | 3.6 | 4.9 | 3.5 | 4.5 | 47.6 |
1996–2025 normals for Essex County — the climate division Newburyport sits in. All-time county record high 100.6°F (2025-06-25); record low -14.3°F (1957-01-15). Source: NOAA / National Weather Service.