The official National Weather Service forecast for Aiken — 33.5604°N, 81.7195°W, 7.1 miles from I-20. Forecasts here are written by NWS CAE, this county’s forecast office.
| Aiken County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 57 | 62 | 69 | 77 | 84 | 90 | 92 | 91 | 86 | 77 | 67 | 60 | 76 |
| Avg low °F | 35 | 38 | 44 | 51 | 59 | 67 | 71 | 70 | 64 | 53 | 42 | 37 | 53 |
| Precip in | 3.9 | 3.6 | 4.0 | 3.4 | 3.7 | 4.8 | 4.9 | 4.7 | 4.0 | 2.6 | 2.9 | 4.2 | 46.7 |
1996–2025 normals for Aiken County — the climate division Aiken sits in. All-time county record high 106.6°F (2012-07-01); record low -0.3°F (1985-01-21). Source: NOAA / National Weather Service.