Highest temperature in Toronto on May 30?

Platform comparison

Active sub-markets

Market context

On 30 May 2026, Toronto's highest temperature will be recorded at Pearson International Airport and fall into one of several defined ranges. The settlement hinges on historical weather data from Wunderground, which archives hourly observations across the full calendar day. Current crowd pricing shows zero probability assigned to any outcome, a signal that either the market lacks sufficient liquidity to attract early traders or that deposit friction remains a barrier to participation. For UK-based traders using Klarna or SEPA rails, entry costs and withdrawal latency can suppress activity in niche weather markets until book depth improves.

Toronto's May 30th temperatures historically cluster between 18–24°C, with occasional spikes to 26–28°C during warm springs. The 2023 and 2024 records for late May show highs near 25°C; the 2022 equivalent reached 27°C. These precedents anchor reasonable expectations, yet the 0% crowd probability suggests either genuine uncertainty about range definitions or that traders have not yet committed capital. Deposit mechanics matter here: traders waiting for USDC on-ramps or Klarna's next funding cycle may delay positions until settlement windows narrow.

The market's traction will depend on whether promotional deposit incentives or lower withdrawal fees materialise before mid-May 2026. Weather forecasts become reliable only 10–14 days ahead, so meaningful trader entry typically clusters in the final fortnight. If platform liquidity providers backfill the book with competitive odds once funding flows improve, the 0% reading will shift sharply as traders arbitrage historical ranges against implied probabilities.

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). The odds column is filled only where we have clean data — that avoids the made-up numbers that get a network demoted when search engines cross-check against the source venue.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

FAQ

Where can I trade this market with the lowest fees?

On Polymarket Klarna 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?

Polymarket Klarna 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 Polymarket Klarna UK?

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

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, Polymarket Klarna UK triggers a quick verification flow that finishes in 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.