Official National Weather Service observations at Chicago O’Hare recorded a daily maximum of 70°F on September 30, 2026, precisely matching the 1991–2020 normal high of 70°F and placing the outcome squarely in the 70–71°F bin. Persistent cloud cover, light rain totaling 0.64 inches, and a southwesterly flow limited daytime heating, consistent with broader late-September cooling after an unusually warm early month. This aligns with historical analogs showing highs near 70°F under similar overcast, moist conditions. Market-implied odds near 100% reflect traders’ confidence in verified station data; only an unforeseen post-analysis revision or alternate station discrepancy could realistically shift resolution.
Riepilogo sperimentale generato dall'AI con riferimento ai dati di Polymarket. Questo non è un consiglio di trading e non ha alcun ruolo nella risoluzione di questo mercato. · AggiornatoView resolved

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