The official National Weather Service forecast for Sweetwater — 35.6015°N, 84.461°W, population 6,468, 3.5 miles from I-75.
| Monroe County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 48 | 53 | 62 | 70 | 78 | 84 | 87 | 86 | 81 | 72 | 61 | 52 | 70 |
| Avg low °F | 28 | 32 | 38 | 45 | 55 | 62 | 66 | 65 | 59 | 48 | 37 | 32 | 47 |
| Precip in | 5.1 | 5.3 | 5.2 | 4.8 | 4.7 | 5.1 | 4.9 | 4.3 | 4.3 | 3.4 | 4.4 | 5.5 | 57.0 |
1996–2025 normals for Monroe County — the climate division Sweetwater sits in. All-time county record high 102.7°F (2012-07-01); record low -14.2°F (1985-01-21). Source: NOAA / National Weather Service.