Highest temperature in London on June 16?

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Market context

The highest temperature recorded at London City Airport on 16 June 2026 will determine which temperature band resolves this market. Resolution depends on Weather Underground's historical data for that specific station and date, with the settlement window closing at midday on the day itself.

London's June temperatures have historically ranged between 15°C and 28°C, with average highs around 21°C. The 0% crowd probability suggests traders are either uncertain about which range will occur or have not yet engaged with the market. Comparable June days at the airport station show considerable variability; the past decade includes instances of temperatures reaching into the mid-to-high 20s alongside cooler spells in the high teens. The settlement mechanism—using a single airport weather station rather than broader London averages—introduces specificity that may affect how traders assess likelihood across different temperature bands.

Traders should monitor the Met Office's extended forecast as June 2026 approaches, particularly any advisories about high-pressure systems or Atlantic weather patterns that typically influence early-summer temperatures across south-east England. The airport station's location near the Thames estuary can produce microclimatic variations; coastal proximity sometimes moderates extremes compared to central London readings. Any unusual seasonal patterns flagged by meteorological services in the weeks preceding mid-June would warrant reassessment of the probability distribution across available temperature ranges.

Methodology

This page tracks Highest temperature in London on June 16? across four political prediction venues. Live odds come from the Polymarket order book (the deepest political prediction-market book). Kalshi is the CFTC-regulated US alternative, Betfair the established UK sports-exchange with politics markets, Manifold the open play-money variant. Election Predictions UK routes every trade through to Polymarket — at 0% fees.

Resolution & payout

For political markets the resolution source is decisive. Polymarket defines a concrete source per contract (e.g. AP, Reuters, official electoral commission) and uses the UMA Optimistic Oracle as the on-chain dispute mechanism. With a clearly defined outcome the USDC payout lands within minutes of the final confirmation.

FAQ

Where can I trade this market with the lowest fees?

On Election Predictions UK, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

Is this market available outside the US?

Election Predictions UK is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.

What does it cost to trade on Election Predictions UK?

Zero. Election Predictions UK routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.