Highest temperature in Dallas on August 21?

Platform comparison

Market context

Dallas Love Field was forecast to reach about 106°F on 21 August, with other public forecasts clustered in the 105–107°F range and no meaningful rain threat in the daytime hours.[3][4][6] That leaves the market’s 100% implied YES price consistent with a very hot summer day in north Texas, where the likely outcome sits firmly inside the upper-temperature bands rather than near any marginal threshold.[2][13]

For context, Dallas in August routinely runs with average highs around 102°F, so a 105°F-plus reading is not an outlier for the date, merely an elevated but plausible peak in a heat-prone month.[13][14] Weather Underground’s own history page for Dallas Love Field showed 93°F very early on 21 August, with the daily table still the key settlement source if there is any mismatch with the summary high/low box.[2] That matters because a market priced at certainty on a daily maximum is usually driven less by whether heat arrives and more by whether the station’s recorded top value lands in a tight band above the chosen threshold.[2][15]

Traders should watch the midday and afternoon updates for Dallas Love Field, since the final high can still shift if cloud cover, a late sea-breeze-style push, or isolated convection trims the peak by a degree or two.[3][5][10] The National Weather Service and commercial forecasts both pointed to mostly sunny, very hot conditions with light south-westerly winds, which supports a high ceiling rather than a volatile one.[3][5][10] No major disruption signal was visible in the available forecast material, so the main dependency is the station’s actual logged maximum rather than any broader weather system change.[5][15]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Sports-specific comparison page for Highest temperature in Dallas on August 21?. 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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