Highest temperature in Helsinki on July 13?

Platform comparison

Market context

The market assesses the peak temperature at Helsinki Vantaa Airport on 13 July 2026, with the crowd currently assigning zero probability to any outcome above the lowest threshold. This 0% YES implied probability suggests traders believe the day will remain cool, yet the frontrunner on the broader exchange is 23°C at 47%, indicating a significant divergence in sentiment regarding the day’s heat potential [1].

Historical July peaks in Helsinki often reach the low-to-mid 20s, with 23°C representing a plausible upper bound for a standard summer day rather than an extreme outlier. The current zero probability for the YES outcome contradicts the 47% weighting for 23°C seen on Polymarket, implying the specific binary contract may be mispriced relative to the multi-outlook temperature distribution [1].

Traders should monitor real-time readings from BBC Weather and the official Wunderground archive, as the settlement relies entirely on the highest recorded figure at EFHK by 12:00 UTC [2]. With the clock ticking past 16:00 UTC on the day itself, the absence of a high-temperature spike so far reinforces the market’s lean toward cooler conditions, though a late afternoon surge could still alter the final resolution before the window closes.

Sources: 1 · 2

Methodology

Political prediction markets differ structurally from sports betting: thinner liquidity, longer settlement windows, higher sensitivity to single news events. This page shows the live Polymarket quote for Highest temperature in Helsinki on July 13? plus platform attributes for the three reference venues, so you can see at a glance where the deepest market for this question sits.

Resolution & payout

For political markets the resolution source is decisive. Polymarket defines a concrete source per contract (e.g. AP, Reuters, official electoral commission) and uses the UMA Optimistic Oracle as the on-chain dispute mechanism. With a clearly defined outcome the USDC payout lands within minutes of the final confirmation.

FAQ

How accurate are political prediction markets?

Historically more accurate than polls. Polymarket's Brier score on US 2024 elections was ~0.11 — better than 538 (~0.14) and every mainstream poll. Markets aggregate information with real skin in the game.

What resolution source is used for elections?

Polymarket defines the source per contract — usually Associated Press (AP Race Call), Reuters or the official electoral commission. The source is stated in contract details before the market opens.

Can prediction markets influence election outcomes?

Markets reflect expectations rather than create them. Studies show public-facing markets can anchor expectations, but don't influence the underlying outcome. Political markets are information, not advocacy.

Which platform has the deepest political liquidity?

Polymarket — by far. US 2024 presidential volume was ~$3.5B vs Kalshi (~$200M) and Betfair (~$120M). Where Polymarket is geo-blocked, brokers like Trump Prediction route into the same order book at 0% fees.

Which political events have the biggest volume?

US Presidential election, party nominations (DNC/RNC), Senate majorities, individual state outcomes (Pennsylvania, Michigan, Wisconsin), and major European elections. Peak markets reach $50-500M per event.