Highest temperature in Houston on August 9?

Platform comparison

Market context

Houston was running close to seasonal norms on 9 August, with official forecasts around 92°F and an overnight low near 79°F at Hobby Airport, while the August climate normal for the site is 94°F for the day and 77°F overnight. Weather Underground was already showing 92°/79° early on 9 August, and the National Weather Service had a similar 92°F high in its Houston/Hobby forecast, so the market’s 0% YES price sits against a straightforward warm-season baseline rather than an obvious outlier setup.[10][9][12]

For context, Hobby Airport’s August climatology makes a sub-95°F outcome ordinary and a reading in the low 90s entirely plausible, especially when cloud cover and humidity keep the heat index elevated without necessarily forcing the thermometer to extreme levels. AccuWeather’s August outlook for Houston also pointed to highs mostly between 90°F and 97°F, which supports treating a result below 95°F as a live, everyday possibility rather than a shock outcome.[1][12]

The main catalysts are any late-day convective showers, lingering cloud cover, or a stronger-than-expected afternoon heating pulse at KHOU, because the market settles on the highest temperature in Weather Underground’s Daily Observations table rather than the headline high-low summary. Traders should watch the Wunderground station page for updated observations through the settlement window, alongside National Weather Service updates from Houston/Galveston, since small shifts in timing of storms or clearing can move the daily maximum by a degree or two.[10][9]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Sports-specific comparison page for Highest temperature in Houston on August 9?. Polymarket's live quote (Polygon order book) plus platform attributes for the three reference venues. Sports markets reward liquidity — Polymarket and Betfair are materially deeper than Kalshi or Manifold.

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