The official National Weather Service forecast for Deltona — 28.9005°N, 81.2637°W, population 210,712, 2.3 miles from I-4. Forecasts here are written by NWS MLB, this county’s forecast office.
| Volusia County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 70 | 73 | 77 | 82 | 87 | 90 | 92 | 91 | 88 | 83 | 77 | 72 | 82 |
| Avg low °F | 48 | 52 | 55 | 60 | 66 | 72 | 74 | 74 | 72 | 66 | 58 | 52 | 62 |
| Precip in | 2.5 | 2.4 | 2.9 | 2.5 | 3.4 | 7.1 | 6.7 | 7.2 | 7.5 | 4.2 | 2.5 | 2.5 | 51.4 |
1996–2025 normals for Volusia County — the climate division Deltona sits in. All-time county record high 100.5°F (1998-06-20); record low 17.1°F (1985-01-22). Source: NOAA / National Weather Service.