Highest temperature in London on July 7?

Platform comparison

Market context

On 7 July 2026, the London City Airport Station will record its highest temperature in degrees Celsius, a real-world event that determines the outcome of this prediction market. The current crowd-implied probability of 0% YES suggests traders believe the temperature will fall outside the specific range being wagered on, likely due to expectations of moderate summer conditions rather than extreme heat.

Historically, July is London’s hottest month, with average highs around 22°C (72°F), though the city has experienced unprecedented spikes, such as 40°C on 19 July 2022, the first time London topped that threshold [6]. However, recent forecasts for July 2026 indicate daily highs between 21°C and 31°C (71°F to 87°F), with overnight lows of 13°C to 21°C, suggesting a return to typical summer variability rather than record-breaking extremes [5]. This historical context frames the 0% probability as a rational assessment of likely moderate conditions.

Traders should monitor upcoming Met Office announcements and real-time weather data from Wunderground, the official resolution source, for any sudden shifts in temperature trends [4]. Recent reports note London’s weather remains highly unpredictable, with current conditions hovering around 30°C and potential spikes to 35°C, though such extremes are not guaranteed [8]. The market’s traction is closely tied to funding flows from payment rails like Klarna and SEPA, as deposit fees and withdrawal speeds directly influence book depth and trading volume on platforms such as polymarket-klarna.co.uk.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page compares Highest temperature in London on July 7? 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

What does SOFORT cost as a deposit method?

Polymarket Klarna UK charges no fees for SOFORT. The only cost is the internal FX spread (typically <1%) on EUR→USDC conversion. SOFORT itself has no end-user fees — the platform absorbs acquirer costs.

Which payment methods are supported?

Klarna (Pay Now / Pay Later), SOFORT, SEPA bank transfer, credit card (Visa/Mastercard), Apple Pay, Google Pay, and direct USDC deposit on Polygon. Availability depends on your jurisdiction.

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).