The official National Weather Service forecast for Keller — 32.9346°N, 97.2517°W, 7.4 miles from I-820. Forecasts here are written by NWS FWD, this county’s forecast office.
| Tarrant County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 57 | 61 | 69 | 76 | 84 | 92 | 96 | 97 | 90 | 79 | 68 | 60 | 77 |
| Avg low °F | 35 | 39 | 47 | 54 | 64 | 71 | 75 | 75 | 68 | 56 | 46 | 38 | 56 |
| Precip in | 2.1 | 2.5 | 3.3 | 3.3 | 4.5 | 3.6 | 1.9 | 2.4 | 2.8 | 4.0 | 2.7 | 2.3 | 35.4 |
1996–2025 normals for Tarrant County — the climate division Keller sits in. All-time county record high 111.1°F (1980-06-28); record low -1.2°F (1989-12-23). Source: NOAA / National Weather Service.