The official National Weather Service forecast for Sparta — 35.9259°N, 85.4641°W, population 5,691, 15.4 miles from I-40.
| White County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 47 | 51 | 60 | 69 | 77 | 84 | 87 | 86 | 81 | 71 | 60 | 50 | 69 |
| Avg low °F | 28 | 32 | 38 | 45 | 55 | 62 | 66 | 64 | 58 | 46 | 37 | 31 | 47 |
| Precip in | 5.2 | 5.3 | 5.4 | 5.2 | 5.0 | 5.3 | 5.3 | 4.0 | 4.2 | 3.1 | 4.2 | 5.7 | 57.9 |
1996–2025 normals for White County — the climate division Sparta sits in. All-time county record high 105.0°F (2012-06-30); record low -19.6°F (1985-01-21). Source: NOAA / National Weather Service.