Official measurements from São Paulo weather stations recorded a daily maximum of 33°C on September 26 under clear skies, light southerly winds, and high pressure that suppressed cloud cover and allowed strong daytime heating. Late-spring climatology in the region favors such peaks when subtropical ridging dominates, and model consensus prior to the date aligned with this outcome, producing near-certain market-implied odds. A realistic challenge would require post-event data revision from the primary observing network or a resolution rule keyed to a different station or averaging method that registers a lower peak.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedView resolved

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