The official National Weather Service forecast for Oakdale — 35.9856°N, 84.5533°W, 5.6 miles from I-40.
| Morgan County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 45 | 50 | 59 | 68 | 76 | 82 | 85 | 84 | 80 | 69 | 58 | 49 | 67 |
| Avg low °F | 27 | 30 | 37 | 44 | 53 | 61 | 65 | 63 | 57 | 46 | 36 | 30 | 46 |
| Precip in | 5.0 | 5.3 | 5.2 | 5.1 | 4.8 | 4.7 | 5.3 | 4.1 | 4.2 | 3.4 | 4.3 | 6.0 | 57.4 |
1996–2025 normals for Morgan County — the climate division Oakdale sits in. All-time county record high 102.0°F (2012-06-30); record low -20.5°F (1985-01-21). Source: NOAA / National Weather Service.