The official National Weather Service forecast for Newbern — 36.1129°N, 89.2617°W, 5.5 miles from I-155.
| Dyer County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 46 | 51 | 61 | 71 | 80 | 88 | 90 | 89 | 84 | 73 | 60 | 50 | 70 |
| Avg low °F | 29 | 33 | 40 | 49 | 59 | 67 | 70 | 68 | 61 | 49 | 40 | 33 | 50 |
| Precip in | 4.0 | 4.5 | 5.2 | 5.4 | 5.6 | 3.9 | 4.0 | 3.3 | 3.2 | 3.8 | 4.1 | 4.9 | 51.9 |
1996–2025 normals for Dyer County — the climate division Newbern sits in. All-time county record high 104.3°F (1952-07-28); record low -11.3°F (1951-02-02). Source: NOAA / National Weather Service.