Highest temperature in London on July 9?

Platform comparison

Market context

The real-world event at stake is the peak temperature recorded at London City Airport on 9 July 2026, a date currently forecast to be the week’s hottest with highs reaching 33°C before thunderstorms arrive later in the day. Despite the crowd-implied probability of 0% for the YES outcome, historical July data for this station shows daily highs routinely climbing between 32°C and 34°C, with the Met Office confirming Monday’s peak hit 34°C and Thursday’s forecast holding at 33°C[4]. The current 0% sentiment appears disconnected from comparable cases where London City Airport has consistently exceeded 30°C in mid-July, suggesting the market may be mispricing the likelihood of a 33°C+ peak before the evening rain disrupts conditions[1][4].

Traders should monitor the timing of the incoming thunderstorm front, which models predict will begin late on 8 July and intensify through 9 July, potentially suppressing daytime highs if clouds arrive earlier than expected[3]. The UK Health Security Agency has issued amber heat alerts from 9am on 8 July until 9pm on 12 July, underscoring the intensity of the current heatwave and the risk of temperatures breaching 33°C before the storm breaks[4]. Recent forecasts from the Met Office and independent weather channels indicate that while rain will dominate the afternoon, the morning hours remain clear and hot, creating a narrow window where the peak temperature could still register at or above 33°C[3][4]. This market’s traction is directly tied to funding flows from depositors using Klarna and SEPA rails, as book depth expands only when traders perceive a credible path to the 33°C threshold before the storm’s full impact.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page compares Highest temperature in London on July 9? with a focus on payment rails and deposit friction. Polymarket accepts USDC on Polygon only; Kalshi only ACH/Plaid (US only); Betfair card/SEPA in EU/UK; Manifold no deposit. Polymarket Klarna UK additionally offers Klarna and SOFORT as fiat on-ramps to USDC. Live odds reflect the Polymarket order book.

Resolution & payout

Settlement path determines payout latency. Polymarket settles on-chain (USDC, minutes). Broker frontends like Polymarket Klarna UK add Klarna/SOFORT as fiat withdrawal options with T+1 processing. Kalshi: USD via ACH (T+1 to T+3). Betfair: local currency via card/SEPA (T+1 to T+5).

FAQ

How does Klarna deposit work on Polymarket Klarna UK?

You enter the deposit amount in EUR/GBP, choose Klarna as the method, run through Klarna's standard authentication (Pay Later or Direct Bank Transfer), and Polymarket Klarna UK converts internally to USDC for the Polymarket order book. Processing: typically under 30 minutes.

How fast is SEPA deposit?

SEPA Instant: under 10 seconds. SEPA Standard: 1-2 business days. Both accepted fee-free; the internal USDC conversion runs automatically once EUR lands in the platform account.

What's the minimum deposit?

10 EUR / 10 USD equivalent. No upper limit, but deposits over $1,500 lifetime volume trigger a quick KYC flow (typically 5-10 minutes).

How do withdrawals work?

Identical methods in reverse. SEPA withdrawal: T+1 (standard) or under 10 seconds (SEPA Instant). Klarna withdrawals process via bank-account refund. USDC withdrawal to external wallet: Polygon gas cost (typically $0.01).

Are payment details protected?

Yes. Card and bank details are never stored by Polymarket Klarna UK — they pass directly through PCI-DSS compliant payment service providers (Adyen, Stripe). Polymarket Klarna UK retains only transaction IDs and Klarna reference numbers for reconciliation.