The official National Weather Service forecast for Jacksonville — 30.3322°N, 81.6556°W, population 1,247,374, 1.3 miles from I-95. Forecasts here are written by NWS JAX, this county’s forecast office.
| Duval County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 66 | 70 | 75 | 80 | 86 | 90 | 92 | 91 | 87 | 81 | 74 | 68 | 80 |
| Avg low °F | 43 | 47 | 52 | 57 | 65 | 71 | 73 | 73 | 71 | 62 | 53 | 47 | 60 |
| Precip in | 2.7 | 3.1 | 3.4 | 2.9 | 3.2 | 6.5 | 5.8 | 7.1 | 6.5 | 3.4 | 2.1 | 2.8 | 49.5 |
1996–2025 normals for Duval County — the climate division Jacksonville sits in. All-time county record high 102.1°F (1998-06-20); record low 10.0°F (1985-01-22). Source: NOAA / National Weather Service.