The official National Weather Service forecast for Marianna — 30.7744°N, 85.2269°W, population 5,560, 3.5 miles from I-10. Forecasts here are written by NWS TAE, this county’s forecast office.
| Jackson County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 63 | 67 | 74 | 80 | 87 | 91 | 92 | 92 | 88 | 81 | 72 | 65 | 79 |
| Avg low °F | 39 | 43 | 49 | 54 | 63 | 70 | 72 | 72 | 68 | 57 | 47 | 42 | 56 |
| Precip in | 4.2 | 4.6 | 4.6 | 4.5 | 3.6 | 5.2 | 6.1 | 5.9 | 5.6 | 2.6 | 3.2 | 4.9 | 55.0 |
1996–2025 normals for Jackson County — the climate division Marianna sits in. All-time county record high 103.8°F (1980-07-15); record low 3.8°F (1985-01-21). Source: NOAA / National Weather Service.