**Forecast consensus from the National Weather Service and other models centers the highest temperature in Houston on September 29, 2026, in the low 90s, with official guidance calling for a high near 92°F under mostly sunny skies and southeast winds of 5–15 mph.** This aligns with the market’s leading outcomes of 90–91°F (45.5%) and 92–93°F (27.5%), as recent days have featured similar conditions with highs of 91–93°F amid stable high pressure and light winds. High humidity supports heat indices near 100°F, but increasing afternoon cloud cover and the approach of a frontal boundary keep extreme heating in check. Rain chances remain low through Tuesday before rising sharply Wednesday, limiting upside risk for 94°F+ readings. Historical September averages near 90–92°F provide additional context, reinforcing trader focus on the narrow 90–93°F window ahead of the day’s resolution.