The official National Weather Service forecast for Sylva — 35.3737°N, 83.226°W, population 5,118, 19.6 miles from I-40. Forecasts here are written by NWS GSP, this county’s forecast office.
| Jackson County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 44 | 49 | 56 | 65 | 71 | 77 | 79 | 78 | 73 | 65 | 55 | 48 | 63 |
| Avg low °F | 25 | 28 | 34 | 40 | 48 | 56 | 59 | 59 | 53 | 43 | 33 | 29 | 42 |
| Precip in | 6.0 | 5.5 | 5.5 | 5.4 | 5.4 | 5.1 | 5.6 | 4.7 | 5.1 | 4.6 | 4.7 | 6.4 | 64.0 |
1996–2025 normals for Jackson County — the climate division Sylva sits in. All-time county record high 93.0°F (2012-07-01); record low -19.6°F (1985-01-21). Source: NOAA / National Weather Service.