The official National Weather Service forecast for Milton — 36.539°N, 79.2086°W, 32.2 miles from I-40. Forecasts here are written by NWS RNK, this county’s forecast office.
| Caswell County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 50 | 54 | 62 | 71 | 78 | 86 | 89 | 87 | 81 | 71 | 61 | 53 | 70 |
| Avg low °F | 28 | 31 | 37 | 46 | 54 | 63 | 68 | 66 | 59 | 47 | 37 | 31 | 47 |
| Precip in | 3.6 | 3.0 | 3.7 | 3.7 | 4.4 | 3.9 | 4.4 | 4.4 | 4.8 | 3.1 | 3.1 | 3.5 | 45.6 |
1996–2025 normals for Caswell County — the climate division Milton sits in. All-time county record high 103.1°F (1952-07-29); record low -6.5°F (1985-01-21). Source: NOAA / National Weather Service.