The official National Weather Service forecast for Van Horn — 31.0403°N, 104.8307°W, 0.8 miles from I-10. Forecasts here are written by NWS MAF, this county’s forecast office.
| Culberson County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 58 | 63 | 71 | 79 | 87 | 95 | 93 | 92 | 86 | 78 | 68 | 59 | 77 |
| Avg low °F | 30 | 34 | 40 | 47 | 57 | 66 | 67 | 66 | 60 | 50 | 38 | 32 | 49 |
| Precip in | 0.3 | 0.3 | 0.3 | 0.4 | 0.6 | 1.4 | 2.0 | 1.9 | 1.7 | 1.1 | 0.5 | 0.4 | 10.9 |
1996–2025 normals for Culberson County — the climate division Van Horn sits in. All-time county record high 110.0°F (1994-06-28); record low -11.2°F (1962-01-11). Source: NOAA / National Weather Service.