The official National Weather Service forecast for Greeneville — 36.1632°N, 82.831°W, population 22,919, 9.9 miles from I-81.
| Greene County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 47 | 52 | 61 | 70 | 77 | 84 | 87 | 86 | 81 | 71 | 60 | 51 | 69 |
| Avg low °F | 27 | 31 | 37 | 45 | 53 | 61 | 65 | 64 | 58 | 46 | 36 | 31 | 46 |
| Precip in | 3.9 | 3.9 | 4.1 | 4.2 | 4.4 | 4.3 | 5.0 | 3.7 | 3.4 | 2.8 | 3.0 | 3.9 | 46.6 |
1996–2025 normals for Greene County — the climate division Greeneville sits in. All-time county record high 102.5°F (2012-07-01); record low -14.6°F (1985-01-21). Source: NOAA / National Weather Service.