Buenos Aires experiences early autumn in late April with mild daytime temperatures typically ranging from 18-22°C. A high of exactly 13°C would represent a significant deviation from seasonal norms, suggesting an unusual cold front or atypical weather pattern for this time of year. The city's temperate subtropical climate provides natural thermal stability, making extreme departures rare. Market resolution is straightforward: the Argentine National Weather Service publishes daily temperature records, providing definitive closure within hours of April 28 close. The 0% implied probability reflects near-universal trader skepticism, likely driven both by seasonal climate patterns showing warmer norms and the statistical improbability of hitting an exact integer value in weather predictions. Current forecast models show no indication of anomalous cold systems approaching Buenos Aires.
Deep dive — what moves this market
Buenos Aires, Argentina's capital, sits at 34°S latitude in the Pampas region with a humid subtropical climate. Late April marks autumn's transition in the Southern Hemisphere, historically delivering average highs around 19-21°C and lows near 13-15°C. The city's proximity to the Río de la Plata provides substantial thermal moderation, reducing daily temperature swings and buffering against extreme cold penetration. A prediction of exactly 13°C represents a peculiar challenge: not only would temperatures need to fall well below seasonal expectations, but they would need to match a precise integer value, compounding statistical difficulty. Recent April 2026 weather patterns have tracked within historical averages with no indication of significant departures. For YES resolution, traders would require an unusual polar air mass incursion from Antarctica or a strong low-pressure system channeling cold air northward—events that occur infrequently during this season. When cold fronts do reach Buenos Aires in April, they typically produce highs in the 14-17°C range rather than exact 13°C. The NO scenario represents normal seasonal persistence: mild to warm afternoons with cooling evenings, typical autumn patterns without disruption. Historical analogs from previous austral autumns show that exact-value weather predictions rarely resolve positively unless preceded by strong model consensus and significant media attention—neither present here. The 0% odds suggest traders are pricing both the meteorological reality of warmer seasonal norms and the mathematical improbability of precision hits. No material forecast updates or weather alerts have shifted this consensus throughout the market's lifespan.
What traders watch for
April 28 morning weather forecast updates between April 27 evening and market close provide final conviction signal.
Argentine National Weather Service publishes official high temperature recording by April 28 midnight UTC to resolve market.
Cold front systems or polar air masses approaching Buenos Aires region through April 27-28 represent the primary YES catalyst.
Historical April temperature records from Buenos Aires in 2024-2025 establish baseline seasonal context for outlier assessment.
How does this market resolve?
The market resolves on April 28, 2026 at 00:00 UTC based on the official recorded high temperature from the Argentine National Weather Service. Exact 13°C determines YES; any other value determines NO, with resolution published within hours of market close.
Prediction markets aggregate trader expectations into real-time probability estimates. On Polymarket Trade, every market question resolves YES or NO based on a specific event outcome; traders buy shares of the side they believe will resolve positively. Prices range 0¢ (certain no) to 100¢ (certain yes) and naturally reflect the crowd-implied probability of YES. This page summarizes the market state for readers arriving from search; for live trading (place orders, see order book depth, execute a trade) open the full interactive page linked above.
