The official National Weather Service forecast for Seneca — 34.6857°N, 82.9532°W, population 23,105, 12.4 miles from I-85. Forecasts here are written by NWS GSP, this county’s forecast office.
| Oconee County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 52 | 57 | 64 | 73 | 79 | 86 | 88 | 87 | 82 | 72 | 63 | 55 | 72 |
| Avg low °F | 31 | 34 | 40 | 47 | 56 | 64 | 68 | 67 | 61 | 50 | 39 | 34 | 49 |
| Precip in | 5.5 | 4.8 | 5.2 | 4.8 | 4.5 | 4.9 | 5.2 | 5.3 | 5.2 | 4.1 | 4.2 | 5.8 | 59.5 |
1996–2025 normals for Oconee County — the climate division Seneca sits in. All-time county record high 102.8°F (2012-07-02); record low -4.7°F (1985-01-21). Source: NOAA / National Weather Service.