The official National Weather Service forecast for Knightdale — 35.7876°N, 78.4806°W, 2 miles from I-87. Forecasts here are written by NWS RAH, this county’s forecast office.
| Wake County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 52 | 56 | 64 | 73 | 80 | 87 | 90 | 88 | 82 | 73 | 63 | 55 | 72 |
| Avg low °F | 30 | 33 | 39 | 47 | 56 | 65 | 69 | 68 | 61 | 49 | 39 | 34 | 49 |
| Precip in | 3.5 | 3.1 | 3.9 | 3.8 | 3.9 | 4.2 | 5.2 | 5.0 | 5.4 | 3.1 | 3.2 | 3.8 | 48.1 |
1996–2025 normals for Wake County — the climate division Knightdale sits in. All-time county record high 103.6°F (1952-07-29); record low -6.1°F (1985-01-21). Source: NOAA / National Weather Service.