Highest temperature in Buenos Aires on July 18?

Platform comparison

Market context

On 18 July 2026, the highest temperature recorded at Minister Pistarini International Airport in Buenos Aires will determine this market's resolution. The settlement window closes at midday UTC, capturing the full calendar day's temperature data from Wunderground's historical records for Ezeiza station. Buenos Aires sits in the Southern Hemisphere, placing July firmly in winter, when mean daily highs typically range between 13–15°C and overnight lows drop to 8–10°C.

Historical temperature records for Buenos Aires in mid-July show extreme variation depending on weather systems. Cold fronts from the south can drive temperatures below 5°C, whilst warm air masses occasionally push readings into the low 20s. The 0% crowd probability suggests traders are pricing in either an unusually cold spell or treating the market as a baseline reference point. July's winter conditions make temperatures above 25°C exceptionally rare in Buenos Aires, though not unprecedented during anomalous warm events.

Traders should monitor Southern Hemisphere weather forecasting from the Argentine Meteorological Service and international models tracking pressure systems approaching the region in early July 2026. La Niña or El Niño conditions active during that period could influence whether cold or warm air dominates. Atmospheric blocking patterns and the strength of polar outbreaks will be the primary catalysts determining whether temperatures remain within typical winter ranges or deviate significantly. Real-time forecast updates from major meteorological centres will become increasingly reliable within two weeks of the settlement date.

Methodology

This page tracks Highest temperature in Buenos Aires on July 18? across four political prediction venues. Live odds come from the Polymarket order book (the deepest political prediction-market book). Kalshi is the CFTC-regulated US alternative, Betfair the established UK sports-exchange with politics markets, Manifold the open play-money variant. For users geo-blocked from Polymarket directly, brokers like Trump Prediction provide a 0%-fee route into the same order book.

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

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.

How fast do political markets react to news?

High-liquidity markets move within seconds to minutes. A Trump tweet on the economy can shift the "Trump 2024" market 2-5 points before mainstream media has written anything.

Are political prediction markets legal in my country?

It varies. They sit in legal gray areas in most jurisdictions. Polymarket is geo-blocked from US/UK/EU; some broker frontends have a different geo footprint. Trade only with capital you can afford to lose, and only if you understand the legal status in your jurisdiction.

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.