The official National Weather Service forecast for Morristown — 36.214°N, 83.2949°W, population 66,539, 5.5 miles from I-81.
| Hamblen County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 47 | 52 | 61 | 70 | 78 | 85 | 87 | 87 | 82 | 72 | 60 | 51 | 69 |
| Avg low °F | 28 | 32 | 38 | 45 | 54 | 62 | 66 | 65 | 59 | 47 | 36 | 31 | 47 |
| Precip in | 4.1 | 4.3 | 4.4 | 4.1 | 4.0 | 4.2 | 4.5 | 3.4 | 3.5 | 2.8 | 3.2 | 4.2 | 46.7 |
1996–2025 normals for Hamblen County — the climate division Morristown sits in. All-time county record high 103.2°F (1952-07-28); record low -15.5°F (1985-01-21). Source: NOAA / National Weather Service.