The official National Weather Service forecast for Winfield — 36.5559°N, 84.4516°W, 12.2 miles from I-75.
| Scott County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 44 | 49 | 58 | 68 | 75 | 82 | 84 | 84 | 79 | 69 | 57 | 48 | 66 |
| Avg low °F | 26 | 29 | 35 | 43 | 52 | 60 | 64 | 62 | 56 | 45 | 35 | 29 | 45 |
| Precip in | 5.0 | 5.4 | 5.2 | 5.1 | 4.9 | 5.0 | 5.8 | 4.2 | 4.0 | 3.2 | 3.9 | 5.7 | 57.4 |
1996–2025 normals for Scott County — the climate division Winfield sits in. All-time county record high 101.5°F (2012-07-01); record low -21.7°F (1985-01-21). Source: NOAA / National Weather Service.