Highest temperature in Wellington on July 20?

Platform comparison

Market context

Wellington’s highest temperature on 20 July 2026 will be recorded at the Wellington International Airport Station, with the market resolving to the Celsius range containing that peak. The crowd-implied probability of any outcome above the lowest bracket sits at 0% YES, reflecting winter conditions typical for the Southern Hemisphere in mid-July.

Historically, Wellington’s July highs rarely exceed 15°C, with the city’s maritime climate and frequent cloud cover suppressing extreme heat. The last time the airport station recorded a July maximum above 18°C was in 2019, and temperatures above 20°C are exceptionally rare, occurring only during brief, anomalous warm spells. Given this pattern, the 0% probability aligns with decades of observational data showing winter maxima clustering between 9°C and 14°C.

Traders should monitor the Bureau of Meteorology’s daily forecasts for NZWN, particularly any sudden shifts in wind direction from the south-west to north-east, which can bring warmer air from the Tasman Sea. A clear-sky night followed by a strong northerly on 20 July could push temperatures higher, but such events are uncommon in mid-winter. No immediate weather alerts have been issued as of 20 July 2026, and Wunderground’s historical archive will be the definitive settlement source.

Methodology

Football-specific comparison page for Highest temperature in Wellington on July 20?. 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 (US-focused) or Manifold (play-money).

Resolution & payout

Sports markets typically settle on official final-whistle plus league confirmation. Polymarket uses UMA Optimistic Oracle with a source URL per contract — usually official league data feeds or ESPN/Soccerway. Two-hour dispute window, then smart-contract payout in USDC.

FAQ

Are prediction markets better than sports betting?

Prediction markets tend toward tighter odds than bookmakers because they use peer-to-peer exchange rather than bookmaker margin. On major matches, Polymarket quotes typically sit 2-5% closer to the true probability model than bet365 or DraftKings.

When do sports markets resolve?

Typically within hours of the official final whistle. Polymarket uses UMA Optimistic Oracle with source URLs pointing at official league data feeds — e.g. the Premier League for EPL markets, UEFA for Champions League, FIFA for World Cup.

What are live sports odds on Polymarket?

Some top-tier matches stay open during play — you can trade the half-time probability in the 70th minute. Polymarket mid-prices update second-by-second; any frontend mirroring the order book shows the same movement.

What's the difference between match odds and outright odds?

Match odds cover a single game ("Bayern beats BVB"). Outright odds are long-term aggregates ("Bayern wins the league"). Outright markets have deeper liquidity; match markets have faster resolution.

Can I import form data and lineups?

This page shows the live Polymarket quote as an implied probability. Form data and lineups must be researched separately via sports data providers (e.g. Soccerway, ESPN, FBref) — we surface the market probability, not the sport analysis.