Recent National Weather Service and model guidance indicate a mostly cloudy to overcast setup over Dallas with a 30-50% chance of showers and thunderstorms developing later on July 16, introducing forecast spread in maximum temperatures. This uncertainty centers on the timing and coverage of cloudiness and convection, which can limit afternoon solar heating and boundary-layer mixing by 2–4 °F compared with clearer scenarios. The tight clustering between the 86–87 °F and 88–89 °F bins reflects model disagreement on whether scattered storms arrive before or after peak heating, alongside modest southerly flow and dew points near 70 °F that temper the diurnal range. Historical July climatology favors highs near 95 °F, yet the current pattern favors values several degrees below average, keeping lower-90s probabilities low.