The official National Weather Service forecast for Grapeland — 31.4918°N, 95.4786°W, 32.9 miles from I-45. Forecasts here are written by NWS HGX, this county’s forecast office.
| Houston County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 60 | 63 | 71 | 78 | 85 | 91 | 94 | 95 | 90 | 80 | 69 | 62 | 78 |
| Avg low °F | 38 | 42 | 49 | 55 | 64 | 71 | 73 | 73 | 67 | 56 | 47 | 40 | 56 |
| Precip in | 4.0 | 3.5 | 3.9 | 4.0 | 5.2 | 4.3 | 3.1 | 3.1 | 3.4 | 3.9 | 4.3 | 4.0 | 46.7 |
1996–2025 normals for Houston County — the climate division Grapeland sits in. All-time county record high 109.8°F (2000-09-05); record low 2.0°F (1989-12-23). Source: NOAA / National Weather Service.