The official National Weather Service forecast for Decatur — 33.2343°N, 97.5861°W, population 6,486, 33.8 miles from I-20. Forecasts here are written by NWS FWD, this county’s forecast office.
| Wise County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 56 | 60 | 69 | 76 | 83 | 91 | 96 | 96 | 89 | 78 | 67 | 58 | 77 |
| Avg low °F | 32 | 36 | 45 | 52 | 62 | 70 | 73 | 73 | 66 | 54 | 44 | 35 | 54 |
| Precip in | 1.8 | 2.3 | 3.2 | 3.3 | 4.5 | 3.7 | 2.0 | 2.5 | 2.8 | 3.7 | 2.5 | 1.9 | 34.2 |
1996–2025 normals for Wise County — the climate division Decatur sits in. All-time county record high 113.0°F (1980-06-28); record low -5.5°F (1989-12-23). Source: NOAA / National Weather Service.