The official National Weather Service forecast for Shannon — 34.3368°N, 85.0713°W, 9.7 miles from I-75. Forecasts here are written by NWS FFC, this county’s forecast office.
| Floyd County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 52 | 57 | 65 | 74 | 81 | 88 | 90 | 89 | 84 | 74 | 64 | 55 | 73 |
| Avg low °F | 31 | 35 | 41 | 48 | 57 | 65 | 69 | 68 | 61 | 50 | 39 | 35 | 50 |
| Precip in | 5.0 | 4.9 | 5.3 | 4.6 | 4.3 | 3.9 | 4.1 | 3.8 | 3.8 | 3.1 | 3.9 | 5.2 | 51.9 |
1996–2025 normals for Floyd County — the climate division Shannon sits in. All-time county record high 105.2°F (1952-07-29); record low -9.1°F (1985-01-21). Source: NOAA / National Weather Service.