Highest temperature in Seattle on August 4?

Platform comparison

Market context

Seattle’s highest temperature on 4 August 2026 is already being treated by traders as a near-locked-in summer heat outcome, with the market heavily concentrated around the low-80s Fahrenheit rather than a broad spread of possibilities. That matters because these daily-temperature markets tend to behave less like open-ended forecasts and more like a temperature bracket test: once early observations and local forecast consensus settle on a range, the public price can snap quickly towards the most likely band, leaving only tail risk from a late-day spike or a cooler-than-expected marine influence.[2][4]

The historical frame is straightforward: Seattle in August usually sits in a warm-but-not-extreme pattern, with typical highs in the mid-70s to low-80s and relatively limited day-to-day volatility compared with more continental climates.[5][8] That helps explain why the crowd-implied 0% YES on the title’s specific framing can coexist with strong conviction about a fairly ordinary summer high; in bracketed weather markets, the decisive question is often not whether it will be warm, but whether the final airport reading lands in the precise settlement range. Comparable prediction venues are already pricing the day as an 80s event, reinforcing the idea that the market is reading this more as a calibration exercise than a genuine weather shock.[2][4]

The main catalysts are the Seattle-Tacoma International Airport observations and any late revisions to the official daily record before the next day’s first datapoint is published, because the market rules explicitly allow corrections only within that window.[2] Traders therefore watch the airport’s hourly climb, final afternoon peak, and any post-event data updates rather than headline city forecasts alone, since the settlement source is Wunderground’s daily history page for KSEA, not a generic Seattle forecast.[2]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Entertainment-specific comparison page for Highest temperature in Seattle on August 4?. Polymarket's live quote (Polygon order book) shows the award probability. For awards markets, Polymarket usually has the deepest liquidity; Betfair runs comparable markets for Oscars/Emmys; Manifold for Eurovision.

Resolution & payout

Entertainment markets settle on official award ceremony or show end. Polymarket uses UMA Optimistic Oracle with a source URL to the official award website. Two-hour dispute window, then smart-contract payout in USDC.

FAQ

Which entertainment markets are available?

Oscars / Academy Awards (Best Picture, Best Director, Best Actor/Actress), Eurovision Song Contest, Emmy Awards, Grammy Awards, Golden Globes, plus reality-TV outcomes (Bachelor, Survivor). Volume usually sits in the five- to six-figure range per market.

When do award markets resolve?

After the official announcement — e.g. Oscars ceremony end for Academy Awards markets, Eurovision final end for ESC markets. UMA Optimistic Oracle typically uses the official award website as the resolution source.

How accurate are award predictions?

Variable. Industry-predictable awards (Oscar Best Picture) have high market accuracy (Brier ~0.15). Reality-TV outcomes with small markets carry more noise. Eurovision is notorious for market upsets due to bloc voting.

Who can trade Eurovision markets?

Polymarket is globally accessible but geo-blocked in select jurisdictions — traders there use broker frontends with a different geo footprint to reach the order book. Eurovision markets have strong European liquidity; German/Austrian/Swiss flow often drives consensus.

How are reality-TV outcomes verified?

UMA Oracle uses the official show website or producer statement as the resolution source. Very narrowly defined markets (e.g. "Will X be voted off the island?") rely on the official show notes.