Highest temperature in Seattle on August 5?

Platform comparison

Market context

Seattle’s highest temperature on 5 August is the airport reading that settles this market, so the real question is whether Sea-Tac clears the low 80s, the mid-80s, or stays in the high 70s. The crowd-implied probability at 0% YES is an outlier against the broader August backdrop, because Seattle’s summer climate typically centres on mild to warm afternoons rather than extreme heat, and recent market pricing on the same city has shown traders willing to assign meaningful odds to 83°F-plus outcomes when the forecast supports it.[1][12][13]

Historical analogues suggest this kind of contract is mostly driven by short-lived warmth rather than persistent heat. Seattle’s August averages are moderate, with daily highs commonly in the 70s and low 80s, and published August forecasts for this week cluster around the upper 70s to low 80s rather than anything well above that band.[1][5][7] That matters for funding-sensitive books: these weather markets often attract smaller, more tactical positions, so deposits that clear instantly and cheap withdrawals can matter more than the headline event itself. Frictionless rails such as Klarna for funding, SEPA for euro users, and USDC for on-chain settlement are the sort of payment paths that tend to support deeper order books when a market is near a weather-inflected threshold.

For traders, the key catalysts are the day-ahead forecast updates, any heat advisory language from local forecasters, and the intraday peak timing relative to Sea-Tac’s official maximum. A late-shifting marine layer, cloud cover, or wind can keep the airport high several degrees below inland Seattle readings, which is why airport-specific forecasts and observation history are more relevant than city-wide headlines.[6][11][14] Recent market pricing on adjacent Seattle temperature events has also shown that the curve can move quickly when consensus forecast highs change by even a degree or two.[15]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page compares Highest temperature in Seattle on August 5? 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).

UK Frequently Asked Questions

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.

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.

Can UK traders use Klarna to deposit on Polymarket?

Polymarket does not natively accept Klarna. To fund a Polymarket account from the UK, you must first purchase USDC via a crypto exchange (Coinbase UK, Kraken) or Revolut, then transfer to a Polygon-compatible wallet. Some third-party on-ramps (MoonPay, Transak) accept UK debit cards and may support Klarna buy-now-pay-later for crypto purchases.

What payment methods can UK users use for Polymarket?

UK traders typically use: (1) Coinbase UK or Kraken — buy USDC with GBP debit card or bank transfer; (2) Revolut — buy crypto and send to wallet; (3) MoonPay or Transak — Visa/Mastercard UK debit card directly to USDC on Polygon. Standard GBP-to-USDC conversion fees range from 0.5–2.5%.

How long do Polymarket withdrawals take for UK users?

Polymarket withdrawals to your Polygon wallet are instant (on-chain). Converting USDC back to GBP via Coinbase UK or Kraken typically takes 1–3 business days for bank transfer, or near-instant for Revolut. Polygon gas fees are minimal (<$0.01 per transaction).