Highest temperature in Toronto on August 7?

Platform comparison

Market context

Toronto’s temperature profile has not shifted much in the last day, but the near-term setup still leans warm rather than hot, with current forecasting pointing to daytime highs around the upper 20s Celsius and a humid, showery pattern rather than a sustained heat spike. Weather Underground showed Toronto at 8:00 PM EDT on 7 August with 69°F and sunny conditions, while AccuWeather’s August outlook had the 7 August high around 80°F and the following days mostly in the mid-70s to low-80s Fahrenheit.[2][1]

That keeps the market in line with Toronto’s usual August behaviour: a moderate summer month with average daytime highs around 25–26°C, but enough year-to-year variability for the odd warmer day to clear that level. Seasonal guides and monthly forecasts all point to comfortable August temperatures rather than extreme heat, and the recent forecast range still clusters around the mid-20s Celsius with only limited upside.[12][6][14]

For traders, the key catalyst is the short-range hourly evolution into the settlement window, because the market resolves on the highest temperature recorded at Toronto Pearson Intl Airport in Weather Underground’s Daily Observations table, not the summary high. Any late-day clearing, reduced cloud cover, or a brief warm-up before showers arrive would matter more than the headline daily forecast, and local coverage on 7 August described cloudy skies, a chance of showers, and humid conditions across the GTA, which tends to cap the ceiling unless the cloud breaks earlier than expected.[4][2]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Highest temperature in Toronto on August 7? across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to Prediction Today, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

UK Frequently Asked Questions

Where can I trade this market with the lowest fees?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Prediction Today. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

Is Polymarket legal in the UK?

Polymarket is accessible to UK traders but is not UKGC-licensed. It operates under US CFTC jurisdiction. UK residents face no domestic legal prohibition on using it, but UKGC consumer protections do not apply. For UKGC-regulated alternatives, Betfair Exchange and Smarkets offer similar prediction-style markets.

Do I pay tax on prediction market profits in the UK?

UKGC-licensed platform profits (Betfair, Smarkets) are typically tax-free gambling winnings for UK individuals. Polymarket profits involve USDC crypto transactions, which HMRC treats as Capital Gains Tax events. Keep full transaction records and report via Self Assessment if gains exceed £3,000 per tax year.

How do I deposit on Polymarket from the UK?

UK traders typically fund Polymarket via Coinbase UK, Kraken or Revolut — buying USDC with GBP and transferring to a Polygon-compatible wallet (MetaMask, Coinbase Wallet). Polymarket's onboarding walks you through the bridging process. Typical GBP-to-USDC conversion costs 0.5–1%.